Commercial Buildout Costs in 2026: Restaurant vs. Retail vs. Medical Office vs. Salon Benchmarks

Ask three contractors what a commercial buildout costs per square foot and you'll get three different answers, because the honest answer is "it depends entirely on what you're building." A yoga studio and a sushi restaurant can lease identical shells in the same strip center and land a half-million dollars apart on construction cost. Before you sign a lease or accept a contractor's number, it helps to know where your concept actually sits on the cost spectrum — and what's driving the difference.

Below is a comparative breakdown across four common small-business categories: full-service restaurants, retail stores, medical/dental offices, and salons/spas, built from current industry cost-benchmarking sources. These are hard construction costs (materials and labor) unless noted; most also require soft costs (design, engineering, permitting — typically 8–20% on top) and FF&E (furniture, fixtures, and equipment), which are separate line items.

The Cost-Per-Square-Foot Comparison

These ranges are wide by design — they reflect real variation by market, shell condition (second-generation vs. raw shell), and finish tier, not a single "true" number. The rest of this article breaks down why.

Full-Service Restaurants: The Most Expensive Category, and Why

Restaurants sit at the top of the cost spectrum almost entirely because of the kitchen. Industry cost trackers consistently point to mechanical, electrical, and plumbing (MEP) work tied to commercial cooking as the single largest line item. Buildermuse's 2026 construction-cost analysis pegs the national average for a full-service restaurant build-out at roughly $380 per square foot, up 28% since 2022, and attributes the increase to labor, materials, and food-service-specific code requirements (Buildermuse). Other contractor-sourced 2026 guides put full-service casual dining in the $350–$725 per square foot range once bar buildouts, expanded prep lines, and dish areas are included (Frans Construction; Tenant Improvement Contractors).

What actually drives the number that high:

• Kitchen exhaust and hood systems. A Type I commercial hood, make-up air unit, and ductwork are code-mandated for cooking with grease-laden vapors and are among the costliest single components of a restaurant buildout.
• Grease traps and enhanced floor drains. Health-department-mandated grease interceptors and floor drainage can add $40–$65 per square foot on top of base construction costs, according to Foodservice Equipment and Supplies data cited in industry cost analysis (Buildermuse).
• Gas service and walk-in refrigeration. New gas lines, dedicated electrical circuits for cooking equipment, and walk-in coolers/freezers are typically new infrastructure even in a "second-generation" restaurant space.
• FF&E on top of construction. Kitchen equipment, dining furniture, and POS systems are a separate budget line — commonly $160,000–$480,000 for a 4,000-square-foot restaurant according to buildout-cost trackers, meaning FF&E alone can rival the entire construction budget of a comparable retail store (Timeless Construction, via GrowthFactor).

The cost gap between "second-generation" restaurant space (a former restaurant with an existing hood, grease trap, and grease-rated ductwork) and a "cold dark shell" (nothing installed) is enormous — often $100 or more per square foot — which is why experienced restaurant operators will pay a rent premium for a space with existing food-service infrastructure rather than build it from scratch (Frans Construction; BuildCrux).

Retail: The Cost Floor for Commercial Buildouts

Retail stores — apparel, gift shops, general merchandise — sit at the lower end of the spectrum because most concepts need little beyond electrical, lighting, flooring, storefront glazing, and fixtures. Cushman & Wakefield-informed data pegs the 2025 national average for an in-line retail fit-out at roughly $155 per square foot, up about 4% year over year, with meaningful regional variation: about $117 per square foot in the Southeast versus $211 in Northern California (GrowthFactor, citing Cushman & Wakefield; EB3 Construction).

Cost drivers for retail are largely about finish level and shell condition rather than systems complexity:

• Shell condition is the biggest swing factor. A "second-generation" space that previously housed a similar retail use can run $50–$120 per square foot, while a raw white-box or dark shell requiring all-new HVAC, electrical panels, and storefront work runs $100–$200+ per square foot (Prestige 360 Design; JAA Contractors).
• Finish tier. Basic commercial finishes (paint, standard flooring, suspended ceilings) sit at the low end; boutique or flagship-level buildouts with custom millwork, premium lighting design, and branded fixtures can exceed $300 per square foot (Prestige 360 Design Retail Buildout Guide).
• Specialized retail categories — electronics, wellness/fitness, or any retail concept with a food or beverage component — push into the $150–$265 per square foot range because they inherit some of the MEP and equipment demands of restaurant or medical buildouts (EB3 Construction; Buildermuse, citing RSMeans data).
• Regional labor and permitting costs. RSMeans-informed data shows retail buildout costs can vary by as much as 35% between major metro markets — New York City projects commonly run $250–$400+ per square foot versus $100–$200 in secondary markets (JAA Contractors, citing RSMeans).

Medical and Dental Offices: Where Code Compliance Drives the Premium

Medical and dental buildouts cost roughly two to three times more than comparable retail space per square foot, and the gap keeps widening. JLL's 2026 medical outpatient building fit-out cost guide put the all-in average cost to convert space into a medical office at $412 per square foot, with hard construction costs alone averaging $226 per square foot — a figure that excludes structural upgrades entirely (JLL data, reported via Stacker News). Terrapin Construction Group's 2026 benchmarks show single-specialty medical offices at $350–$475 per square foot in hard costs, with urgent care centers running $450–$625 and ambulatory surgery centers as high as $500–$800+ per square foot (Terrapin Construction Group).

Why medical space costs so much more than a standard commercial buildout:

• Plumbing and medical gas systems. Exam rooms, dental operatories, and procedure rooms require sinks, drains, and in some cases medical gas lines (oxygen, vacuum) at a density far beyond typical office or retail plumbing.
• HVAC and air handling. Medical-grade ventilation, humidity control, and in some cases negative-pressure rooms add both equipment and ductwork cost that retail and most restaurant buildouts never touch.
• Structural and shielding requirements. Imaging rooms need lead-lined walls; surgical suites need reinforced structural support for equipment — costs that scale sharply with acuity level. JLL's guide estimates moderate-acuity fit-outs (expanded imaging, specialty rooms) run about 10% above baseline outpatient costs, while high-acuity facilities run an additional 20% above that (JLL, via Stacker News).
• ADA compliance and code review. Accessibility requirements are stricter and more heavily inspected in healthcare occupancy classifications than in standard retail (M) or restaurant (A-2) occupancy, adding both construction and soft-cost (permitting/design) time.
• Basic vs. specialty split. Even within medical, the range is wide: a basic primary-care buildout runs $75–$200 per square foot, while a build with procedure rooms, imaging, or surgical capability runs $250–$400+ per square foot (Clear House Lending; MedServ).

Salons and Spas: Plumbing Is the Swing Factor

Salons and spas occupy a middle position — cheaper than medical and often cheaper than restaurants, but not as inexpensive as basic retail, because of one recurring line item: plumbing. Industry buildout guides consistently identify plumbing for shampoo bowls, pedicure stations, and treatment-room sinks as the single most expensive component, commonly running $30–$60 per square foot on its own (Pulse RevOps).

Typical ranges by tier:

• Second-generation salon space (previously a salon or similarly plumbed use): $75–$120 per square foot, since existing rough-in plumbing can be reused (Prestige 360 Design; Pulse RevOps).
• Raw shell requiring new plumbing and electrical: $150–$200 per square foot.
• Full wet-room day spa (hydrotherapy, multiple treatment rooms with plumbing, saunas): $200–$350+ per square foot, with luxury interiors and specialty HVAC/acoustic treatment pushing toward $250–$500 in premium markets (Mindbody; American Spa).
• Medical spas, which blend clinical and cosmetic services, land in a similar $90–$130 per square foot construction range but carry higher code and equipment requirements that push all-in costs higher, commonly $225,000–$325,000 for a 2,500-square-foot buildout (Workee; Mindbody).

What's Actually Driving the Gap Between Categories

Stepping back, four factors explain nearly all of the variation across every category above:

1. MEP and plumbing complexity. This is the single biggest driver. Businesses with heavy water, gas, or ventilation needs (restaurants, medical, spas) cost multiples of businesses that need mostly electrical and cosmetic finishes (apparel retail, general office).
2. Equipment load. Commercial kitchens, medical imaging, and treatment-room equipment all require dedicated power, structural support, and sometimes specialized installation — costs that sit outside the base construction number entirely as FF&E.
3. Finish level. Within any category, the gap between a basic, functional buildout and a premium, brand-forward buildout can be 2–3x per square foot, independent of systems complexity.
4. Code and occupancy classification. Healthcare and food-service uses face stricter, more heavily inspected building codes than general retail or office occupancy, adding both direct construction cost and soft-cost review time.

Before You Commit to a Number

Every range above is a starting point, not a quote — actual cost depends on your specific shell condition, market, and finish level. Before signing a lease or a construction contract, it's worth running your own numbers against your actual space: several operators use BuildoutIQ, a free tool that generates a preliminary cost estimate for your specific business type and square footage, as a sanity check before committing to a lease or getting into detailed contractor bids.