Self-Storage Feasibility Study

Self-storage enters the fourth quarter of 2026 as a supply-overhang market that is starting to find its floor. National deliveries are forecast at about 52.9 million net rentable square feet this year, roughly 19% below 2025, and about 45.3 million square feet in 2027. Construction starts at midyear were almost 20% below the prior year. The pipeline is thinning, but the units delivered between 2022 and 2025 are still filling, and advertised street rates were down 1.9% year over year in August 2026 even as occupancy stabilized. The improvement in occupancy has come from fewer move-outs, not stronger move-ins.

The largest operators now set the pricing environment. Public Storage completed its acquisition of National Storage Affiliates on July 22, 2026, creating a platform of more than 4,500 properties and about 327 million rentable square feet. By MMCG's estimate the three largest operators now control roughly 36% of operated square footage nationally, and every new facility prices against a revenue-management engine that discounts aggressively on the web and raises rents on tenants in place. In-place rents sit well above street rents across the sector, and that spread is now a regulated subject. California's SB 709 became law in October 2025 and applies to rental agreements signed from January 1, 2026, requiring first-page disclosure of promotional rates and the maximum rent chargeable in the first twelve months. New York City required every self-storage facility to hold a consumer-protection license from August 25, 2026, and settled its first enforcement action against a national operator for $1.7 million in July 2026. A pro forma that assumes historical existing-customer rent increases will repeat is no longer a credible document.

Lease-up has lengthened. Public Storage's own filings state that a newly developed facility typically takes at least three to four years to stabilize its revenue, and that physical occupancy is reached in two to three years only by offering lower rental rates during fill-up. Lenders have absorbed this. In the commercial mortgage-backed securities market, self-storage delinquency is close to zero, but nearly 30% of outstanding loan balances sit on servicer watchlists, including more than 84% of the 2023 vintage. The risk in self-storage credit is maturity and refinance, not current payment, and it traces directly to loans underwritten on 2021 rent and absorption assumptions.

None of this makes self-storage a poor asset class. It makes feasibility a submarket exercise. The national supply story does not predict the outcome of a 70,000 square foot facility on a specific corridor. The questions that determine whether a project finances in 2026 are the depth of demand inside a drive-time trade area, the supply pipeline within three miles, the achieved rent after promotions rather than the posted web rate, the lease-up pace documented at comparable facilities, and debt service coverage at 85% occupancy with no credit for forward rent growth. That is the question an MMCG self-storage feasibility study is built to answer, and it is the question a loan committee asks before it approves the credit.

Every self-storage loan, whether an SBA 7(a) construction loan, a 504 debenture, a USDA guarantee or a bank construction line, turns on a small set of underwriting questions. Does the trade area support the proposed square footage without pulling occupancy away from the facilities already there? How does the site compare with its competitive set on visibility, access, format and price? How durable is the rent stack against promotional discounting and the regulatory pipeline forming in several states? What is the probability that revenue and cash flow track the sponsor's projection, and what happens to coverage if lease-up runs twelve months long?

MMCG's study is structured to answer each of those questions with evidence the reviewer can check: operator-published rates read directly from competitor websites and dated, trade-area demographics from the Census Bureau, supply counts reconciled against the municipal permit docket, construction cost benchmarks tied to published builder and REIT data, and a stress-tested pro forma that shows the lender where the break-even sits. The study states plainly which figures are primary-verified and which are carried from secondary sources. It is written in the register of an appraisal report, as findings, and it is prepared under USPAP discipline by a principal.

MMCG produces feasibility studies across the full range of self-storage formats, and the underwriting differs materially by format.

Single-story drive-up suburban product remains the SBA-financed mainstay. Projects typically run 40,000 to 80,000 net rentable square feet on four to six acre sites. Published builder benchmarks put hard cost at about $42 to $68 per square foot for the buildings and $70 to $110 per rentable square foot all-in excluding land, with a climate-controlled building adding roughly $8 to $30 per square foot. Construction runs nine to twelve months. Physical lease-up to 85% to 90% occupancy should be underwritten at 24 to 36 months, with revenue stabilization at 36 to 48 months. Stabilized expense ratios for a single-site private operator run about 32% to 38%, against 26% to 31% at the public REITs, which have scale in payroll, marketing and insurance that a single facility does not.

Climate-controlled multistory urban infill is the institution-favored format and the hardest to pencil in 2026. Public Storage's own development pipeline carries an all-in cost of about $173 to $184 per rentable square foot including land, underwritten to an 8% yield on cost, and management has said that yield is not representative of the broader market. Against institutional survey cap rates near 5.75% and 2026 transaction cap rates near 6.6%, the development spread for a typical sponsor is thin. In high-cost coastal infill markets an all-in basis near $300 per rentable square foot is realistic, and the yield on cost at achieved rents falls to 5% to 6%. These projects finance on value, with a bank construction loan followed by a REIT bridge program at certificate of occupancy and a permanent take-out after stabilization, and the feasibility study sizes the loan to stabilized value rather than to cost.

Conversion plays deliver meaningful savings against ground-up construction. Adaptive reuse now accounts for about 10% of U.S. self-storage inventory, roughly 179 million square feet across more than 2,500 facilities, and in 32 U.S. cities every facility under construction is a conversion. Retrofit cost runs about $35 to $75 per square foot on top of a building basis of $30 to $90 per square foot, and a single-story big box converts to about 70% to 78% rentable efficiency. The binding constraints are retail-district zoning, recorded shopping-center use covenants, the change of occupancy from mercantile to storage for fire protection, and a sub-50,000 square foot asset's narrower buyer pool at exit. The 2024 to 2026 wave of big-box closures has created inventory, but the verified climate-controlled rates in many of those submarkets support a total basis well below the typical conversion budget, which is why the purchase price, not the retrofit, decides most conversions.

Boat and RV storage is the fastest-growing storage niche and the format most often financed in rural markets. Open canopy structures run about $30 to $36 per square foot turnkey, enclosed product $40 to $75, and high-specification condo units more. Land requirements run seven to ten acres at roughly 50 spaces per acre. Fewer than 2,000 dedicated facilities operate nationally against a boating and RV household base that is counted in the millions, and the demand signal in lake and reservoir markets is structural: owners who keep boats on lifts year-round still need a secured place for the trailer. The underwriting risk is rate, not demand. Open-space rents of $25 to $50 per month do not carry a turnkey build at conventional leverage, so the study's work is to size the covered-with-power and enclosed mix, phase the build to pre-leasing, and document the owner's operating role. Where the project pairs vehicle storage with an adjacent campground, MMCG's RV park feasibility study framework integrates with the storage analysis.

Mixed-use storage, increasingly required by municipalities that want activated streetscapes, introduces hybrid structural systems that add 15% to 25% to construction cost per square foot and usually requires separate ownership entities or a condominium structure for the storage and the residential or retail components.

Multi-site portfolios and platform-level acquisitions require platform-grade analysis covering site-by-site economics, regional market exposure, sponsor track record and corporate-level financial integration. MMCG produces both single-asset studies for SBA borrowers and platform diligence for institutional sponsors evaluating roll-up candidates. Where storage sits within a broader industrial or logistics development, our industrial feasibility study framework applies.

Three structural conditions define the market a self-storage feasibility study must address this year.

The first is supply discipline at the national level paired with severe submarket dispersion. The 2026 delivery forecast of about 52.9 million net rentable square feet is a sharp step down from 2025, and 2027 and 2028 are forecast lower still. But aggregate discipline obscures concentrated overbuilding. Phoenix now leads the thirty largest metros in share of inventory under construction, Sarasota and Cape Coral carried about 8% of stock under construction at the start of 2026, Atlanta led 2025 deliveries, and Lubbock, Texas, at about 17.6 square feet per capita, has posted falling street rates for more than a year. The national average sits near 7.3 square feet per capita, and a metro such as Boston sits near 5 square feet per capita with no new supply delivered in 2025 or forecast for 2026. The feasibility question is never the national number. It is whether the trade area's own supply, adjusted for occupancy, exceeds the trade area's own demand.

The second is institutional consolidation and revenue management. With the Public Storage and National Storage Affiliates combination closed, the three largest operators run roughly 36% of operated square footage, and the independent owner-operators who still hold about 40% of national rentable square footage price in the shadow of their web rates. In nearly every competitive survey MMCG ran in 2026, the REIT web rate for a 10 by 10 unit sat 40% to 50% below the in-store rate, with a $1 first month or a free month on top. A study that underwrites to posted web rates understates revenue; a study that underwrites to in-store rates overstates it. The achieved in-place rent is the figure that matters, and the study has to construct it.

The third is the regulation of existing-customer rent increases. The California disclosure statute, the New York City licensing regime and the first municipal enforcement settlement are the leading edge of a pipeline forming in several states. Colorado's total-price law, in effect since January 1, 2026, requires advertised storage rates to include every mandatory fee. None of these laws caps rent increases yet, but each of them changes how the move-in rate, the promotional period and the first-year maximum are disclosed, and together they signal that the spread between in-place and street rents is now a political subject. MMCG models existing-customer rent increase durability explicitly against the regulatory pipeline in the subject's state rather than assuming the 2022 to 2024 trajectory continues.

Capital markets have repriced accordingly. Institutional survey cap rates averaged about 5.75% in the second quarter of 2026 and are drifting wider for Class B and C product. The 2026 average transaction cap rate across the broader market is about 6.6%. Secondary-market private trades run about 6.5% to 8.0%. Operating expense pressure has shifted from insurance, which is now falling at the public operators, to property taxes, which rose 5% to 6% year over year at the largest REITs in the second quarter of 2026 as new facilities were reassessed at completed cost. Those benchmarks inform residual valuation in every MMCG study and directly determine whether stabilized value supports the proposed capital stack.

Self-storage is an eligible operating business under SBA rules, a treatment in place since the October 2010 revision of the standard operating procedure removed mini-warehouses from the passive-business exclusion. It does not appear on the SBA's enumerated list of special-purpose properties, so a standard 504 self-storage project requires 10% borrower equity, rising to 15% when the borrower is a start-up. Between fiscal 2021 and fiscal 2025 the SBA approved roughly 774 7(a) loans and 352 504 loans to self-storage businesses, an average of about $1.3 million per loan. About a third of SBA storage loans are 504 loans, roughly three times the 504 share across all SBA lending, which reflects how real-estate-heavy the credit is. One lender, Live Oak Bank, originated about 61% of 7(a) self-storage dollars in 2025 across 62 loans.

SOP 50 10 8.1 governs every SBA loan that receives a loan number on or after October 1, 2026, and it changed the acquisition lane most. An initial acquisition of an existing facility must now show at least 1.25 times debt service coverage on historical results, with projections no longer accepted to reach the floor. A quality of earnings report is required when the business purchase price, net of owner-occupied real estate, reaches $3 million. An independent business valuation is required on every change of ownership, equity injection is 10% at minimum, and standby seller debt may supply no more than half of it. At a 7.5% cap rate and 90% leverage, a stabilized mom-and-pop acquisition does not clear 1.25 times; the study's job in that lane is to establish the price or the equity at which it does, and to confirm whether the real estate component qualifies for 25-year amortization.

No SBA rule mandates a feasibility study on every loan. The regulation permits the agency to require one, and lenders and certified development companies require it in practice for start-ups, ground-up construction and any credit underwritten on projected rather than historical income. The leading SBA self-storage lender has stated publicly that it requires a third-party feasibility study before it looks at a loan request.

The 504 Energy Public Policy goal deserves specific attention for storage. A facility with one to three employees cannot meet the 504 job-creation ratio on a $2 million to $3 million debenture, and the energy goal is one way the project becomes eligible without it. Rooftop solar generating more than 15% of the energy used at the facility qualifies, lifts the per-project debenture ceiling to $5.5 million, and opens a $16.5 million aggregate track that lets an owner-operator finance a second and third facility. The solar itself rarely changes the economics; on a 70,000 square foot facility a 40 kilowatt array saves about $4,000 a year. Its value is eligibility and capacity, and the federal investment credit depends on the array being placed in service by December 31, 2027.

For the program's full underwriting treatment, including the Appendix 15 acquisition categories, the expansion lane and the appraisal and valuation requirements, see our SBA self-storage feasibility study page and the SBA SOP 50 10 8.1 underwriting spine.

USDA Rural Development's Business and Industry guaranteed loan program finances businesses in rural communities of fewer than 50,000 people with guarantees of 85% on loans under $5 million and 80% at $5 million and above, a 3% initial guarantee fee, a 0.55% annual fee and terms up to 40 years. The governing regulation, 7 CFR Part 5001, does not name self-storage, mini-warehouses or boat and RV storage anywhere, in either the eligible or the ineligible lists. Eligibility is therefore at the discretion of the state office and turns on two provisions. The regulation excludes properties used primarily for commercial rental when the borrower has no control over tenants and services, and it excludes speculative real estate investment. An owner-operator who manages the facility, controls access and pricing, contracts directly with occupants and delivers services such as a wash bay, dump station, battery tending or concierge launch is the defensible case. A passive or master-leased owner is not.

Where the project qualifies, a feasibility study by an independent qualified consultant is required for guaranteed loans over $1 million to a new business, and the agency may require one in other cases. MMCG prepares USDA studies to the content guide in Appendix A to Subpart D of Part 5001, documents the operating role explicitly, and models service revenue and labor so the business reads as an operating enterprise rather than passive rental. Sponsors should obtain written eligibility confirmation from the state Rural Development office before committing to a feasibility scope, and MMCG recommends a pre-application meeting. The Rural Energy for America Program is not a reliable source of grant funds for storage solar in 2026; the grant window was paused in March 2026 and the revised rule effective October 16, 2026 moves grants to a post-completion model. For eligibility and program detail see our USDA feasibility study page and our USDA Business and Industry loan eligibility breakdown, and confirm the site on our USDA eligibility map.

Experienced multi-unit operators and institutional sponsors finance self-storage conventionally when the deal exceeds the $5 million 7(a) ceiling, when a portfolio requires coordinated execution, or when non-recourse structure is essential. In 2026 the structure for a ground-up multistory project is a recourse bank construction loan at 60% to 70% of cost, priced over SOFR, followed at certificate of occupancy by a REIT bridge program. Public Storage's lending program offers three to four year interest-only bridge loans priced over SOFR, non-recourse, with the REIT managing the property. Extra Space's program lends up to 80% of value on a non-recourse basis and explicitly does not lend on construction. Both carried growing books through the second quarter of 2026. Permanent take-out through conduit or life company debt sizes at 1.25 to 1.35 times coverage and a minimum debt yield near 9%, and that test, not the construction budget, sets the loan.

MMCG's conventional studies are built for the credit committee and the bridge lender: the achieved rent rather than the promotional rate, a drive-time trade area, land basis by appraisal, as-of-right zoning confirmation, the property tax load at completed assessment, and a take-out sizing that shows the gap, if any, between the construction loan and the permanent loan that stabilized income supports.

Every MMCG self-storage feasibility study is structured to address the analytical requirements that SBA loan reviewers, 504 CDCs, USDA Rural Development offices, bank credit committees and institutional equity evaluate. Our methodology builds on the bankable feasibility study framework MMCG applies across asset classes, calibrated to self-storage unit economics.

Site and physical suitability. We evaluate visibility, traffic counts from the state transportation department's published stations, ingress and egress, signage, parcel suitability against format-specific coverage, and FEMA flood designation. MMCG applies its own underwriting screens for population within the trade area and household income, stated as MMCG screens rather than as industry standards, and the study says so. Where a site comparison against alternative uses is warranted, the analysis pairs with a highest and best use study. For natural hazard exposure we cross-reference our FEMA flood zone and wetlands map and our seismic hazard map.

Trade area and demographic modeling. Self-storage demand is hyper-local. We define trade areas by natural and man-made barriers and by 5, 10 and 15 minute drive-time polygons following the road network, supplementing the conventional 1, 3 and 5 mile rings. Within each area we analyze population, household count and density, median household income, renter share, persons per household, and housing turnover, because 2026 demand is a stock story of household penetration and length of stay rather than a flow story of moves. Existing-home sales ran at about 4 million annualized in August 2026 with the highest inventory in a decade, and a feasibility study that leans on move-driven demand in this environment is underwriting the wrong driver. The national household penetration rate for self-storage is about 12.6%.

Competitive supply and saturation analysis. Our team profiles every operating facility in the trade area: rentable square footage where published, unit mix, climate-controlled share, vintage, ownership, and current street rates read directly from each operator's own website and dated in the study, never from aggregators. We layer in permitted and under-construction competitors from the municipal docket and from national pipeline data. Saturation is assessed by the relative method the industry's own almanac uses, comparing the trade area's occupied supply per capita with the trade area's demand per capita, rather than by a fixed national threshold. Fixed bands such as "balanced at 7 to 9 square feet per capita" have no published basis, and MMCG does not use them. In oversupplied submarkets we apply stressed-case discounting to base lease-up assumptions.

Demand modeling and absorption. Penetration models tied to trade-area households produce demand depth estimates that we reconcile against documented absorption at comparable facilities. We underwrite physical stabilization at 24 to 36 months and revenue stabilization at 36 to 48 months for new construction, consistent with the largest operator's own disclosures, and we discount further in submarkets with documented competitor proximity or pipeline overhang.

Unit mix, pricing and revenue modeling. Our revenue models distinguish the posted web rate, the in-store rate, the achieved in-place rate and economic occupancy. The gap between physical and economic occupancy is widest in years one and two of lease-up and is modeled explicitly against the promotions competitors are running on the survey date. Climate-controlled premiums are measured locally, not assumed; in 2026 surveys they ranged from under 20% in desert and Sun Belt markets to more than 50% in supply-constrained infill. Existing-customer rent increase durability is modeled against the regulatory pipeline in the subject's state.

Operating expense benchmarking. Our pro formas itemize each expense line against the public operators' same-store disclosures and MMCG's database across format, region and operator type. Property tax is modeled at assessed value near completed cost from the first full tax year after completion, with growth of 4% to 6% annually. Insurance is modeled flat to down at 2026 renewals with a stressed case for coastal and wildfire exposure. Payroll and marketing carry an explicit premium for the absence of REIT scale.

Financial projections and lender metrics. Our ten-year pro forma projects revenue on the stabilization curve above, modeling new-customer rates, rent-increase cadence, tenant insurance and ancillary revenue, and expense growth separately. We calculate year-by-year debt service coverage, break-even occupancy, yield on cost, cap-rate-implied value, cash-on-cash return and internal rate of return at multiple hold periods.

Zoning, entitlement and regulatory review. Self-storage is conventionally permitted in commercial and industrial zones, often by conditional use permit with timelines of six to eighteen months. Entitlement risk rose sharply in 2026. Atlanta adopted a 180-day citywide moratorium in July 2026 and referred a permanent special-use requirement to its zoning board, Elk Grove, California adopted a two-year moratorium, Yonkers, New York barred approvals of new facilities in September 2026, and New Franklin, Ohio extended its pause. Miami has prohibited self-storage in its urban core transect zones since 2020, and New York City has required a special permit in much of its industrial districts since 2017. Our principal's J.D. supports the zoning, covenant and entitlement review, including the shopping-center use restrictions that decide most big-box conversions. MMCG does not perform environmental site assessments; environmental review is limited to confirming the borrower's documentation aligns with lender requirements.

Construction cost and capital stack reconciliation. Total project cost is benchmarked by format against published builder data, REIT development disclosures and MMCG's cost database, and reconciled against stabilized value to confirm that loan-to-cost and loan-to-value thresholds are achievable and that equity injection complies with the applicable SBA, USDA or conventional standard.

Sensitivity and scenario analysis. Bankable studies stress the pro forma along occupancy, rate and expense axes plus a combined downside and a break-even calculation: occupancy at 80%, 85% and 90% with lender preference for coverage of 1.20 times or better at the 85% case, rate at 10% and 15% below the underwritten street rate, expenses at 10% and 20% above budget, a combined downside imposing all three, and the minimum occupancy that produces 1.0 times coverage at proposed terms. Where the client requests it, MMCG runs a Monte Carlo simulation on the same inputs.

MMCG prepared six model case studies to show how a lender-grade self-storage feasibility study resolves the specific questions each financing program raises. They are illustrative model studies grounded in real markets, real competitive surveys and real regulatory text, not client work, and each one reports what the study found rather than what the sponsor hoped.

A rural owner-operated boat and RV storage facility at Lake of the Ozarks, Missouri, financed with a USDA Business and Industry guarantee, where verified open-space rents of $25 to $50 per month do not carry a turnkey build at 80% leverage and the study resolves the mix, phasing and equity that do.

A single-story drive-up facility with a climate-controlled building in Fountain Inn, South Carolina, financed with SBA 504, where a rooftop array covering about 27% of facility load qualifies the project under the Energy Public Policy goal that a three-employee business cannot meet on jobs.

A former big-box retail store in Fayetteville, Georgia, converted to climate-controlled storage with SBA 7(a), where operator-verified climate rates of about $0.61 per square foot per month support a total basis well below the typical conversion budget and the study resets the purchase price.

An SBA 7(a) acquisition of a stabilized independent facility in Cañon City, Colorado, under SOP 50 10 8.1, where a 7.5% cap rate at 90% leverage fails the 1.25 times historical coverage test and the study establishes the price, the equity and the 504 alternative that pass.

A four-story climate-controlled infill facility in Dorchester, Boston, on conventional construction and REIT bridge debt, where the most supply-constrained large market in the country still yields only 5% to 6% on a $300 per square foot basis and the loan is sized to stabilized value.

A Phase II expansion of an existing owner-operated facility in Coachella, California, financed with SBA 7(a), where blended coverage clears 1.15 times only in the second operating year and the study sizes the interest and lease-up reserves that carry it there.

Self-storage feasibility study fees start at $4,900, scaling with format, market saturation, lender program and scope. Single-story drive-up studies in well-documented markets fall at the lower end. Climate-controlled multistory infill studies typically range from $7,500 to $15,000 given the deeper trade-area, supply and achieved-rent work required. Conversion studies involving occupancy-change engineering, covenant review and adaptive-reuse cost benchmarking range from $6,500 to $12,000. Boat and RV storage studies, including the operating-role documentation USDA requires, are priced within the standard range. Multi-site portfolios spanning three to five sites range from $15,000 to $35,000, and platform diligence covering ten or more sites is quoted on engagement-specific terms.

Every engagement receives a fixed-fee proposal. There is no hourly billing and no scope creep. Our standard fee structure is 50% upon engagement and 50% upon delivery, and MMCG has offered a written acceptance guarantee on every study since founding: revisions required by the lender or agency are made at no additional cost. Standard delivery is 9 to 16 business days from engagement to final report for single-site studies, with rush turnaround available from 5 business days. Multi-site portfolios and complex zoning, conversion or special-use scenarios may require additional time. Studies should be commissioned 60 to 90 days before seeking financing to align with loan committee timelines.

Among the firms that publish self-storage feasibility pricing, desktop studies run $3,500 to $6,500 and full lender studies $5,700 to $10,500. MMCG's entry fee sits at the desktop level for a lender-grade deliverable.

MMCG Invest built and operates MMCG Analytics, a national property data estate covering parcels, buildings, hazard layers, demographics and the public lending record. Before commissioning a study, sponsors can open their site on the platform and see the parcel, the three-dimensional massing, the flood, wind and seismic exposure, and the trade-area demographics the study will use. Every MMCG self-storage feasibility study draws on that estate, which is why the competitive survey, the hazard screen and the demographic rings arrive in the report already reconciled to the same geography.

Engagements are led by Michal Mohelsky, J.D., Practicing Affiliate of the Appraisal Institute. Feasibility studies are prepared under USPAP discipline, aligned with SBA SOP 50 10 8.1 for 7(a) and 504 loans and with 7 CFR Part 5001, Appendix A to Subpart D for USDA Business and Industry, REAP and Community Facilities financing. Engagements start at $4,900 with fixed-fee scoping, 50% at engagement and 50% on delivery and lender acceptance. Standard delivery is 9 to 16 business days, with rush turnaround available from 5 business days. A senior analyst responds to proposal requests within 12 business hours from the firm's San Francisco office at 27 Maiden Lane, Suite 625.