Budget

An office project budget: count everything, from the start.

An office budget is not limited to the works. Comparing budgets across scenarios means counting the same items, on the same assumptions.

By Quentin Piepszownik, architectUpdated on

Topic
Budget
Sources (in French)
2 official or professional texts and documents, cited at the end of the page
Checked on
9 October 2026

The items in a complete budget

ItemContent
Real estateRent, service charges, taxes, any rent-free period, security deposit
WorksPartitions, ceilings, floors, electrical, heating-ventilation-air conditioning, plumbing, joinery, finishes
FurnitureWorkstations, chairs, storage, meeting rooms, social spaces; reuse possible
IT and audiovisualNetworks, hybrid rooms, displays, booking, access control
RelocationMove, sorting, archives, IT, temporary premises if needed
FeesArchitect, engineering consultants, technical inspection, health and safety coordination depending on the project
SupportChange management, training, signage
ExitReinstatement of the former premises, double rent during the transition
ContingenciesProvision for unforeseen costs, higher in refurbishment than in new build

What the landlord delivers, what you pay for

The market often refers to “Cat A” for a floor delivered ready for fit-out (raised floors, ceilings, basic lighting and air handling, toilets) and to “Cat B” for the tenant's own fit-out (partitions, finishes, specific networks, furniture). These are not regulatory categories: what they include must be checked in the lease and its annexes, line by line.

Keeping to the budget

  • Set an overall project budget for each scenario, with the same items.
  • Tender to contractors trade package by trade package, on a common pricing framework.
  • Make decisions before the contracts are signed, not during the works.
  • Handle changes in writing, with their costed impact.

The architect must inform the client when the budget is manifestly insufficient for the brief, and may not commit any expenditure without the client's agreement (architects' code of ethics, art. 36).

Frequently asked questions

Why don't you give a price per square metre?

Because a price per square metre without a brief, without a survey of the existing premises and without a defined scope is reassuring but offers no protection. We draw up an overall project budget based on your brief and the existing premises, then test it against contractors' bids.

Your situation is not quite this one?

Every project starts with a precise question. Describe yours: headcount, floor area, deadline, what isn't working today.