Team Ongoing services

Commercial maintenance contract: we calibrate your setup at the right price

Three trade-offs to settle before launching any consultation

A poorly calibrated office maintenance contract costs 10 to 15% in unjustified annual overspend: NF X 60-000:2017 requires you to choose between an obligation of means and an obligation of results, not to combine the two. Costs observed on the projects supported by Kytom range between 18 and 25 EUR excl. VAT/m²/year depending on HVAC, electrical and fire safety complexity, with the range aligning to the site’s typology and equipment level. Three levers govern this calibration: the granularity of the technical scope, the level of contractual commitment under NF X 60-000:2017, and the boundary between the in-house team and external providers. This page sets out the method applied by Kytom since 2006 on its Design & Build projects with integrated operation, in France and Spain, along with the recurring pitfalls identified when renegotiating an existing contract.

Calibrating a building maintenance contract rests on three tensions that must be explicitly resolved before any competitive tender.

Scope versus responsiveness. A broad contract (preventive, corrective, minor works up to 1,500 € excl. VAT) improves responsiveness but dilutes technical accountability. A contract segmented by lot (HVAC, electrical, plumbing, access control) clarifies responsibilities but multiplies interfaces and purchase orders.
Results commitment versus budgetary flexibility. Contracts with quantified SLAs (98% availability rate, response time under 4 hours for blocking failures) lock in the budget over 3 to 5 years. An obligation of means, as defined by NF X 60-000:2017, preserves adaptability to changing uses.
Partial insourcing versus full outsourcing. Keeping an in-house technical team for routine interventions while outsourcing regulated lots (HVAC, fire safety under CNPP Q18, lifts) improves the cost-effectiveness ratio on sites larger than 2,000 m², as shown by the projects we oversee.

Our reading differs from the FM consensus on this specific point: the profession’s conventional wisdom pushes towards full outsourcing in the name of contractual simplicity. In practice, on the multi-technical head offices we support, insourcing level 1 interventions (changing light bulbs, minor plumbing, minor reconfiguration) significantly reduces the total cost of operation compared with a fully outsourced approach, at equivalent service quality. Full outsourcing is only preferable below 1,500 m² or for portfolios distributed across more than 8 sites.

When these trade-offs do not apply. On a single-lot site of less than 800 m², without a dedicated server room and with fewer than 50 occupants, segmentation by lot becomes counterproductive: the fixed coordination costs exceed the specialisation savings, and a single multi-technical contract remains preferable. Likewise, below an annual maintenance budget of 15,000 € excl. VAT, setting up quantified SLAs and progressive penalties requires more management time than the value recovered.

What annual budget should be planned for an office maintenance contract?

Between 18 and 25 € excl. VAT/m²/year depending on HVAC, electrical and fire safety complexity. Sites with a dedicated server room, centralised BMS or ERP constraints fall within the upper range.

Should you favour an obligation of means or of results under NF X 60-000:2017?

The obligation of results (quantified SLAs, 98% availability rate, response within 4 hours)