Do I understand correctly that you don’t yet know WHAT exactly you need to renovate? Tell us a bit about the property, maybe we can help. Typical pointers are, of course, the year it was built and when the last renovations were done.
If you can roughly name the trades, the approach from Noelmaxim would be sufficient to estimate the costs and put them in writing.
Well, maybe this isn’t the right forum, but if you’re interested, I can outline it briefly.
It is a detached single-family house with a pitched roof, built in 1952, plot size 360 sqm, living area 116 sqm, usable area 90 sqm, currently divided into two identical apartments (ground floor and upper floor), plus two garages (one very small and one normal size). The only renovation work done was new windows in 1983 and a new roof with insulation in 1992. It is still classically divided, so many small rooms, no terrace facing the garden, and the attic is not converted.
Basically, everything needs to be gutted and renovated. The advantage, in my view, is that the house basically has the right size, is detached, has a garden, is located in a very nice and established residential area, and through the gut renovation you have the chance to bring everything up to a current standard and choose all components yourself. Then hopefully you have peace for the next 30 years regarding the major issues.
Regarding the requirements: within our financial means, we want to get as much as possible out of it, preferably with a very good energy standard. The bathroom and kitchen can easily be from Ikea — we don’t need luxury there.
One thing, however: we can hardly do any work ourselves, maybe a bit of demolition and painting at the end.
What I have so far estimated:
[*Facade insulation €40,000
[*]Roof surface insulation €40,000
[LIST]
[*](Over-rafter insulation and roofing)
[*]Possibly optional if you instead insulate the upper floor ceiling
[*]Basement ceiling insulation €7,000
[*]Possibly vacuum insulation, due to somewhat low height?
[*]Heating €35,000
[*]Air heat pump or pellet heating
[*]Window replacement €20,000
[*]About 20 windows, triple glazed
[*]Ventilation system?
[*]Bathroom renovation €20,000
[*]Small bathroom on ground floor, larger bathroom on upper floor
[*]Floor coverings €20,000
[*]Underfloor heating €10,000
[*]If sensible with wooden beam ceiling and somewhat lower room height
[*]Electrical installations €20,000
[*]No smart home, but with network outlets and high-voltage supply to the garage
[*]Piping system €10,000
[*]Kitchen €15,000
[*]Wall relocation €5,000
[*]Structural engineer €2,000
[*]Photovoltaic system €10,000
[*]Construction management €20,000
[*]Painter and plastering €15,000
[*]Lighting?
[*]Doors?
Some of this is optional or can also be available in a cheaper variation. But especially pipes, electrical, and heating are indispensable.