Office fit-out cost per sqm: 2024 ranges, detailed line items, the Kytom method to set a budget that holds up in committee. Quantified guide for executives and DETs.
"Just budget it for me per sqm"
A budget underestimated by 15 to 20% at signing explodes during the works phase. Project feedback documents average overruns of 180 euros/sqm linked to technical discoveries (asbestos removal, electrical compliance upgrades, acoustic reinforcement). Without a contingency provision calibrated at 8%, the final trade-off falls back on furniture or finishes.
A fit-out rushed to meet a generic budget degrades the employee experience. When acoustics are sacrificed, satisfaction drops by 27%. One absence in five is linked to working conditions. Savings per sqm are paid for in turnover.
The tertiary decree requires -40% energy consumption by 2030. A budget that ignores LED lighting, BMS or added insulation exposes you to Legifrance penalties of up to 7,500 euros. The regulations also govern floor areas, ventilation and accessibility via the R4214 provisions.
Kytom, active since 2006 with 11 agencies in France and Spain, structures the budget into six distinct line items: technical envelope (partitions, floors, ceilings), technical packages (HVAC, electrical, fire safety systems), referenced furniture (Vitra, Herman Miller, Knoll depending on the trade-off), signage, IT/audiovisual, and contingencies. Each line is defensible before an investment committee, with reference ratios consolidated internally. Across the 1,200+ projects delivered, the average fitted-out area reaches 850 sqm, which makes it possible to calibrate reliable ranges by typology (open space, flex, hybrid). The costing is reviewed at three key milestones (sketch, detailed design, contract), so that the real estate department never discovers a variance greater than 5%.
Audit of the existing building (condition of technical packages, ERP compliance, energy performance) and gathering of target uses. Deliverable: a quantified scoping note with low, median and high euro/sqm ranges, justified line by line and benchmarked against the most recent market references in the commercial sector.
Arbitration workshop with the executive, HR and real estate departments to set the level of specification per zone (collaboration, concentration, reception). Deliverable: detailed functional brief, target sqm/workstation ratio, budget scenarios compared at 900, 1,200 and 1,500 euros excl. VAT/sqm.
Architectural and technical design with precise detailed-design costing. Consultation of contractors based on the Kytom specifications. Deliverable: a contracted works package, a detailed schedule over 12 weeks on average, a risk matrix and a contingency provision calibrated at 8% of the overall amount.
Management as a general contractor: a single point of contact, a single invoicing stream, a results commitment. Deliverable: pre-acceptance inspection, snag clearance within 15 days, a digital as-built documentation file (DOE), and a line-by-line budget report handed to the finance department.
"We had received three quotes ranging from 720 to 1,680 euros/sqm. Kytom rebuilt everything line by line: the committee approved 1,150 euros/sqm without debate, and we held the budget to within 2%."
For a standard project, count on 800 to 1,500 euros excl. VAT/sqm excluding furniture. Referenced furniture adds 250 to 600 euros/sqm. IT and audiovisual represent an additional 80 to 200 euros/sqm depending on the level of equipment targeted.
A defensible ratio covers partitions, floors, ceilings, paint, electrical, HVAC, fire safety systems and plumbing. Always check whether furniture, signage, removal, asbestos removal and fees are included. A 30% gap between quotes is often explained by these vague scopes.
Working on programming upstream makes it possible to reduce the leased area by 15 to 25%. A well-calibrated flex office saves 200 euros/sqm in annual rent. Favouring furniture reuse lowers the furniture line item by 30% at equivalent quality.
Yes, systematically. Kytom calibrates a provision of 8% of the works amount for a recent building, and up to 12% for a building predating 1990. The average overruns observed reach 180 euros/sqm when technical discoveries arise in an occupied site.
Count on 12 weeks on average for 850 sqm as a general contractor, excluding the studies phase (an additional 4 to 6 weeks). A 2,000 sqm project with heavy technical packages moves to 18-22 weeks. The schedule directly conditions the final cost.
Present three quantified scenarios (900, 1,200, 1,500 euros/sqm) with ROI calculated over 5 years: area savings, energy savings aligned with the regulatory obligations of the commercial stock, measured HR impact. Kytom provides a comparative matrix benchmarked against 1,200+ projects to support the decision.