Construction cost benchmarks for SBA-financed projects: per-square-foot data across 9 property types and 4 U.S. Census regions

West Coast markets carry a 1.05–1.25× cost premium — driven by seismic codes, strict regulation.

Commercial construction costs in the United States have entered a new era of volatility, and small-business borrowers using SBA financing face a planning environment unlike anything in the past two decades. National per-square-foot costs now range from as low as $35 for basic self-storage shells to over $1,000 for Class A medical office buildings, with regional multipliers stretching that spread even further. After a brief deceleration in 2024, construction cost inflation reaccelerated through 2025—driven by 50% tariffs on imported steel and aluminum, persistent labor shortages of roughly 440,000 workers, and surging demand from data-center and infrastructure mega-projects. For SBA 504 and 7(a) borrowers budgeting ground-up construction, understanding these benchmarks is no longer optional. It is the difference between a feasible project and a stalled one.

Nine property types reveal a $900-per-square-foot cost spectrum

The range of construction costs across SBA-eligible property types is staggering. The table below synthesizes 2024–2025 data from Cumming Group, RSMeans, HVS, Weitz Company/ASHA, and industry-specific sources into national median ranges for hard construction costs.

Property Type	National Cost/SF Range	Typical Building Size
Office (Class B mid-rise)	$330–$560	20,000–80,000 SF
Medical Office	$375–$1,018	8,000–40,000 SF
Retail / Strip Center	$245–$415	5,000–25,000 SF
Industrial / Warehouse	$150–$300	20,000–200,000 SF
Self-Storage	$35–$130	40,000–120,000 SF
Hotel / Limited-Service	$190–$410	40,000–80,000 SF
Multifamily / Mixed-Use	$210–$475	20,000–150,000 SF
Car Wash (express tunnel)	$250–$400	3,000–5,000 SF
Gas Station / C-Store	$200–$730	3,000–5,500 SF
Assisted Living / Senior Care	$240–$452	30,000–80,000 SF

Medical office commands the highest per-square-foot premiums because of specialized MEP systems—medical gas, enhanced HVAC, and radiology shielding—that can push mechanical and electrical costs to 35–45% of the total hard-cost budget. Industrial and warehouse construction sits at the opposite end, where simple tilt-up concrete shells with minimal interior finishes keep costs well under $300 per square foot nationally. Self-storage occupies a unique niche: single-story, non-climate-controlled facilities can be built for as little as $25–$65 per square foot, though multi-story climate-controlled facilities now routinely exceed $100.

Gas stations and car washes produce deceptively high per-square-foot figures because their small building footprints absorb the cost of extensive site work—fuel canopies, underground storage tanks, tunnel equipment, and paving—that can represent 50% or more of total project cost. A typical 8-pump gas station with a 3,000-square-foot convenience store now costs $5.6 million to $7 million in total development, according to NACS industry data.

Hotel construction costs are best understood on a per-room basis. The 2025 HVS Hotel Development Cost Survey places median limited-service hotel development at approximately $167,000 per key, with select-service rising to $223,000 per key. Converted to per-square-foot terms, limited-service hotels typically land between $190 and $375, depending on brand standards and market.

Regional multipliers reshape every budget

Geography is the single most powerful variable in construction pricing. RSMeans City Cost Index data reveals that installation labor costs—not materials—drive the dramatic regional spread, ranging from indices of 60–70 in the South to 165–186 in New York City, against a national baseline of 100. Materials, by contrast, stay within a narrow 95–108 band nationwide.

Region	Cost Multiplier (vs. National Avg)	Key Cost Drivers
Northeast	1.10–1.38×	Union labor, dense urban logistics, strict codes, winter premium
West	1.05–1.25×	Seismic requirements, environmental regulation, high COL
Midwest	0.88–1.05×	Moderate wages, proximity to materials, balanced regulation
South	0.80–0.95×	Right-to-work states, longer build seasons, lower COL

Applying these multipliers transforms the planning calculus. A mid-rise office building that costs $460 per square foot in Dallas might run $520 in Chicago and $600 or more in Boston. The following table estimates regional per-square-foot ranges by applying Cumming Group and RSMeans regional factors to national benchmarks.

Property Type	Northeast	Midwest	South	West
Office (mid-rise)	$475–$720	$360–$560	$330–$510	$400–$610
Medical Office	$490–$1,020	$380–$580	$340–$520	$450–$740
Retail / Strip Center	$310–$415	$260–$340	$245–$295	$280–$415
Industrial / Warehouse	$195–$340	$140–$260	$130–$240	$165–$300
Self-Storage	$45–$165	$30–$115	$25–$100	$40–$155
Hotel / Limited-Service	$300–$605	$260–$535	$230–$480	$280–$545
Multifamily / Mixed-Use	$310–$600	$210–$430	$200–$370	$280–$530
Car Wash	$320–$500	$230–$370	$210–$340	$290–$450
Gas Station / C-Store	$270–$860	$190–$620	$175–$580	$240–$790
Assisted Living	$310–$570	$225–$400	$210–$365	$280–$510

These ranges represent hard construction costs. Total development budgets—including land, soft costs, and financing—will be significantly higher, a distinction that carries particular weight for SBA borrowers subject to appraisal-based loan sizing.

How SBA 504 and 7(a) programs frame construction budgets

The SBA's two primary lending vehicles impose specific guardrails that directly affect how construction budgets are assembled. The 504 program uses a 50/40/10 structure: a conventional bank provides 50% in a first-lien position, a Certified Development Company provides 40% via an SBA-guaranteed debenture (capped at $5 million, or $5.5 million for manufacturers), and the borrower contributes 10% equity. Startups or special-purpose properties trigger higher equity requirements of 15–20%. Crucially, the 504 provides permanent take-out financing only—borrowers must first secure a separate construction loan from a conventional lender.

The 7(a) program offers more flexibility: a single loan up to $5 million can cover land, construction, equipment, and working capital. For straightforward projects, the 7(a) loan itself funds construction draws during an interest-only period. For complex builds, lenders typically require a separate construction loan that the 7(a) refinances upon completion.

Both programs require an as-completed appraisal, and total financing is capped at the lesser of appraised value or total project cost. This means construction budgets must survive a cost-reasonableness test: if the appraisal comes in below 90–95% of estimated project cost, the borrower must inject additional equity or reduce scope. In September 2025, the SBA raised the allowable construction contingency from 10% to 15% of the construction budget—a direct acknowledgment of today's cost volatility. Eligible costs include both hard and soft costs: architectural and engineering fees, permits, environmental assessments, interim construction interest, and impact fees all qualify. Borrowers acting as their own general contractor face extra scrutiny, including a requirement to demonstrate costs equal to or below what an unaffiliated contractor would charge.

Hard costs versus soft costs, and why the ratio matters

Industry consensus holds that hard costs represent 70–80% of total project budgets, with soft costs accounting for the remaining 20–30%. For SBA borrowers, understanding this split is essential because both categories are eligible for financing, but the ratio directly affects appraisal outcomes and loan-to-value calculations.

Within hard costs, labor and materials each account for roughly 40–50% and 30–50% respectively, with equipment at 5–15%. The MEP (mechanical, electrical, plumbing) package alone represents 25–35% of hard costs for standard commercial buildings and 35–45% for healthcare and laboratory facilities. Soft costs break down into architecture and design fees (5–12% of total project cost), engineering (3–8%), financing costs (3–6%), permits (1–3%), insurance (1–3%), and project management (3–5%). A prudent budget adds 5–10% contingency on top.

Simple building types compress the soft-cost ratio. An industrial warehouse might carry soft costs of just 15–20%, while a medical office or assisted-living facility with complex permitting and specialized design consultants can push soft costs to 30% or beyond.

Tariffs and labor shortages are rewriting the cost outlook

The construction cost environment of 2025–2026 is defined by two compounding forces. First, the federal government imposed 25% tariffs on all imported steel and aluminum in March 2025, doubled them to 50% in June, and added 50% tariffs on copper products in August. Canada—which supplies 85% of U.S. softwood lumber imports—saw duties rise from 14.5% to 34.5%. The Bureau of Labor Statistics reports that steel mill product prices surged 20.7% year-over-year by January 2026, aluminum rose 33%, and copper wire and cable jumped 22.3%. Oxford Economics estimates the effective tariff rate on U.S. construction imports now sits at 27.7%.

Second, the construction industry faces a structural labor deficit. The Associated Builders and Contractors estimates the sector needs 439,000 additional workers in 2025, with mechanical and electrical trades facing the most acute shortages. ENR's Skilled Labor Index rose 5.7% year-over-year through December 2025, outpacing general wage growth. Union total compensation now averages $56.12 per hour versus $36.48 for non-union workers—a 54% premium that weighs heavily in Northeast and West Coast markets where union density is highest.

The major cost indices capture this acceleration. The Turner Building Cost Index reached 1,510 in Q4 2025, reflecting a 4.72% year-over-year increase—the highest since 2022. Mortenson's nonresidential index posted an even steeper 7.35% annual gain. The Rider Levett Bucknall index shows national costs rising 4.4% annually, with Miami (+5.50%), Denver (+10.15%), and Milwaukee (+10.74%) as the fastest-escalating markets. JLL's midyear 2025 revision projects aggregate construction costs rising 7–12% under current tariff policy—roughly double the pre-tariff forecast.

The AGC reports that 43% of contractors have seen at least one project canceled, postponed, or scaled back due to higher costs. The AIA Architectural Billings Index declined every month of 2025, signaling continued weakness in new project starts through mid-2026.

What these benchmarks mean for SBA borrowers in 2026

For small-business owners planning SBA-financed construction, three strategic implications emerge from this data. First, budget conservatively and use the full 15% contingency now permitted by SBA guidelines. With tariff policy in flux and steel prices rising 20%+ annually, a 10% contingency is no longer sufficient for most projects. Second, regional site selection carries enormous financial weight: the same assisted-living facility that costs $280 per square foot in a secondary Southern market will run $450 or more in the Northeast—a difference that can determine whether a project's as-completed appraisal supports the requested loan amount. Third, timing matters. With the ABI signaling continued softening in nonresidential starts, competitive bidding conditions may improve through late 2026, potentially offsetting some material-cost inflation with lower contractor margins.

The most sophisticated SBA borrowers are now presenting lenders with construction budgets benchmarked against Cumming Group or RSMeans data, broken into hard and soft cost line items, and stress-tested against 5–8% annual escalation scenarios. In a market where the spread between the lowest-cost property type in the cheapest region (a simple self-storage facility in the South at $25–$35 per square foot) and the most expensive (a high-rise medical office in the Northeast at $800–$1,000+) spans a factor of thirty, precision in cost estimation is not just good practice—it is the prerequisite for getting a project financed at all.

Sources:

Cost Index & Estimating Firms

• RSMeans (City Cost Index)

• Turner Building Cost Index

• Rider Levett Bucknall (RLB) Quarterly Cost Report

• Mortenson Construction Cost Index

• Cumming Group

Industry Research & Advisory

• HVS (Hotel Development Cost Survey 2025)

• Oxford Economics

• JLL (Construction Outlook)

• Weitz Company / ASHA (senior care data)

Trade & Professional Associations

• Associated General Contractors of America (AGC)

• Associated Builders and Contractors (ABC)

• American Institute of Architects (AIA) — Architectural Billings Index (ABI)

• ENR (Engineering News-Record) — Skilled Labor Index

• NACS (National Association of Convenience Stores)

Government & Regulatory

• U.S. Small Business Administration (SBA) — 504 and 7(a) program guidelines

• Bureau of Labor Statistics (BLS) — Producer Price Index data

Loan Analytics

• Loan Analytic data