Second opinion on €261,500 renovation budget for 45 m² mixed-use building in Utrecht

yard.steady

Homeowner
Established
€261,500 feels like a substantial budget for 45 m², yet the items most likely to upset it are still uncertain. This is a two-bedroom mixed-use building in Utrecht, with no extra floor area planned. The intended work includes the kitchen and washrooms, new finishes, checks to the wiring, and some improvements to energy performance.

I am more concerned about what happens once surfaces are opened than about choosing fittings. Difficult pipe access, damp, defective wiring or structural repairs could change both the price and the order of work. What contingency would be sensible before intrusive investigations, and which questions should I put to the surveyor and contractor before committing?
 
At such an early stage I’d separate the contingency from known but not yet priced items. Perhaps carry around 15% for genuine surprises, then reduce it once you have intrusive inspections and a detailed scope. Ask whether the contractor’s price includes opening and reinstating walls or floors, waste removal and protection of retained areas. Is the property currently occupied, and how old are its electrical and plumbing installations?
 
The phrase “electrical checks” is too vague for a budget this large. Does it mean inspection only, selected repairs, or replacement of wiring and the distribution board if defects appear? I’d also want the €261,500 split between construction, VAT, professional fees, permits and any commercial fit-out. Without that breakdown, a contingency percentage could give false comfort.
 
I’m not convinced that choosing 10% or 15% is the main issue yet. A broad scope can consume any reserve through exclusions rather than unforeseen work. Have someone map every plumbing route and test moisture around bathrooms, external walls and the ground floor. Ask contractors to state explicitly who pays for access holes, drying, pipe rerouting, making good and delays after concealed damage is found.
 
Sequencing deserves its own contractor conversation. Get a simple programme showing investigations first, then any structural or moisture work, rough electrical and plumbing work, energy measures, closures, finishes and installation of the kitchen and bathrooms. Also ask which materials have long lead times and what can safely be ordered before permits or opening-up work are resolved. Ordering everything early may protect the schedule but can lock you into dimensions that later change.
 
One further caveat: “no extension” does not automatically mean no structural work. Altered layouts, weakened floors or discoveries after opening up can still create it. I’d obtain comparable itemised quotes using the same written scope and make an exclusions table. Include permit timing, utility upgrades, plumbing access, moisture treatment and reinstatement. If those remain undefined, keep a larger reserve rather than accepting a low fixed price that pushes every ambiguity into a variation.
 
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