An office fit out typically costs $50-$250 per square foot, with a midrange project averaging about $125 per square foot. An office fit out cost calculator should account for space condition, finish level, mechanical and electrical work, location, and furniture—not just floor area.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Fit out cost per sq ft | $50 | $125 | $250 | Construction and finishes; scope varies |
| 1,000-sq-ft office | $50,000 | $125,000 | $250,000 | Before unusual upgrades or furnishings |
| Furniture and IT | $10 per sq ft | $30 per sq ft | $75 per sq ft | Often budgeted separately |
What a Typical Office Fit Out Costs Per Square Foot
A basic refresh of an existing office with usable walls, ceilings, and building systems may cost $50-$90 per square foot. A standard tenant improvement with new meeting rooms, finishes, lighting, and some plumbing or HVAC changes often runs $90-$160 per square foot. A premium fit out or a conversion from a bare shell can reach $160-$250 or more per square foot.
For a 5,000-square-foot office, those ranges translate to roughly $250,000-$450,000 for a basic refresh, $450,000-$800,000 for a standard build, or $800,000-$1.25 million for high-spec work. Assumptions: U.S. commercial space, contractor-led construction, normal access, and no major structural remediation. Building condition and the amount of new construction are usually more influential than office size alone.
How Walls, HVAC, and Finishes Shape the Contractor Quote
Fit out quotes combine trade labor, materials, building-system changes, and project costs. The following planning ranges show typical shares of a standard project; unusual layouts and local code requirements can shift them.
| Quote component | Typical range | Common pricing basis | What changes it |
|---|---|---|---|
| Partitions and doors | $15-$45 per sq ft | Area or linear ft | Room count, glass walls, door hardware |
| Electrical and lighting | $10-$30 per sq ft | Area and fixture count | Power density, controls, panel capacity |
| HVAC and plumbing | $10-$35 per sq ft | Area or equipment | Capacity, ductwork, kitchen or restroom scope |
| Flooring, paint, ceilings | $12-$40 per sq ft | Finish area | Material grade, acoustic needs, prep |
| Design, permits, and general conditions | $8-$25 per sq ft | Project fee or area | Drawing scope, inspections, schedule |
Costs can overlap when contractors package trades into a single per-square-foot price. Compare inclusions line by line before treating two contractor totals as equivalent.
Which Square-Footage and System Specs Raise the Estimate
Room density is a major driver: an open office with one conference room generally needs fewer partitions, doors, and outlets than a plan with many private offices. Adding 10-12 enclosed rooms to a 5,000-square-foot suite can add several thousand dollars in partitions and doors, before upgraded glass or acoustic treatments.
HVAC capacity also matters. If existing equipment serves the suite adequately, work may be limited to balancing and minor duct changes. If a 5,000-square-foot floor needs a new rooftop unit, zoning, or extended duct runs, equipment and installation can add roughly $20,000-$60,000 or more. Verify the existing electrical panel and HVAC capacity before finalizing the layout.
Other estimate changes include ceiling height, fire protection adjustments, accessibility work, and hazardous-material remediation. A project involving more than 20% new partitions or extensive system rerouting is less likely to price like a simple finish refresh.
How Regional Labor Rates Change Office Fit Out Prices
Commercial construction costs commonly run 10%-25% above national planning ranges in high-cost markets such as New York City, San Francisco, and parts of Boston. Smaller markets and some rural locations may be 5%-15% below a national baseline, although limited contractor availability or long delivery distances can erase that difference.
For example, a standard $125-per-square-foot budget might become about $138-$156 per square foot in a high-cost metro, or $106-$119 in a lower-cost market. These are planning adjustments, not fixed city rates; building rules, union labor, freight, and local bidding conditions matter. Use local contractor quotes rather than applying a national average as a final budget.
How Many Labor Hours and Weeks the Build May Need
A 2,000-square-foot refresh may take about 4-8 weeks on site, while a 5,000-square-foot standard fit out can take 8-16 weeks after permits and material lead times. A complex shell build may take 4-8 months or longer. Crew size varies by trade and phase, so total elapsed time is not the same as one crew working continuously.
Where labor is billed separately, planning rates often fall around $50-$100 per hour for general commercial trades and $75-$150 per hour for licensed electrical or mechanical work, depending on market and contractor. Ask whether the quote includes supervision, overtime, and after-hours building access.
Three Office Fit Out Scenarios With Different Scopes
A 1,500-square-foot refresh with paint, carpet tile, LED replacements, and minor repairs might total $75,000-$135,000, or $50-$90 per square foot. A 5,000-square-foot standard layout with new meeting rooms and moderate HVAC and electrical work might total $450,000-$800,000, or $90-$160 per square foot.
A 10,000-square-foot shell conversion with new partitions, lighting, distribution, and higher-grade finishes could cost $1.6-$2.5 million, or $160-$250 per square foot. Furniture, audiovisual equipment, moving, and taxes may sit outside these construction estimates. Request a separate allowance for furniture and technology to avoid mistaking a construction quote for a turnkey total.
Extra Charges for Furniture, Permits, and Existing Conditions
Furniture can add about $10-$75 per square foot, depending on whether the office uses basic workstations or ergonomic desks, private-office pieces, and meeting-room packages. Data cabling and audiovisual equipment may add $5-$25 per square foot. Permit and design charges vary widely, while demolition and disposal can add roughly $3-$10 per square foot when substantial removal is required.
Unknown conditions—such as damaged subfloor, outdated wiring, insufficient fire protection, or asbestos—may require change orders. A contingency of 10%-15% is common for a defined renovation, and 15%-20% may be prudent for older or poorly documented buildings. Confirm what is excluded and who pays for landlord-required upgrades before approving the estimate.
How to Lower an Office Fit Out Budget Without Cutting Function
Keep existing walls, doors, ceilings, and service routes where they work; moving plumbing or major ductwork can cost more than changing surface finishes. Standard carpet tile, paint, and modular partitions can provide a functional finish at lower cost than custom millwork or extensive glass. Reuse sound furniture and lighting after checking condition and code compliance.
Compare at least three detailed bids based on the same drawings and finish schedule. Ask contractors to price alternates, such as retaining the existing ceiling or reducing custom conference-room finishes, rather than submitting vague savings. Schedule early enough to avoid rush labor and expedited shipping. Control the layout and written scope first; late design changes are a common source of avoidable expense.