Demolition of 270-year-old house & construction of modern multifunctional building

Thank you for the photos.

Does anyone have current figures regarding construction costs for an office building? I hear from an architect 2500€ per m², the MEP planner claims max. 2000€ per m². At about 330m² that is already quite a large variation :rolleyes:.

I would be interested in costs (experience values?) of an external staircase over the floors "Keller", "EG", "OG" plus "Penthouse" including an external elevator located in the stairwell. The staircase does not need to be insulated. I imagine something like a approx. 3.5 x 3.5m large, externally glazed tower made of galvanized steel.

Does anyone have current figures regarding construction costs for an office building? I hear from an architect 2500€ per m², the MEP planner claims max. 2000€ per m². With about 330m², that's quite a big variation :rolleyes:.

I would also be interested in costs (experience values?) of an external staircase spanning the floors "basement," "ground floor," "upper floor" plus "penthouse" including an external elevator located within the stairwell. The staircase does not need to be insulated. I imagine something like a roughly 3.5 x 3.5m large, externally glazed tower made of galvanized steel.

I work for a company that among other things manages office buildings and plans renovations. Costs have exploded in the last five years, as occupational safety regulations and requirements for ergonomic workplaces plus energy saving regulations are cost drivers. 2000 €/ m² is already a low estimate. We had to renovate some offices for new leases to meet the requirements of the regulations and customers. Corona has now turned the concepts upside down once again.

U-turn ... Seems there is still hope for my little gem :cool:

After long discussions and back-and-forth calculations, the little house will probably be sold after all. Demolition + new construction are not worthwhile due to various restrictions. No profit simply comes out of it. The architect friend who briefly advised me on this matter and his wife have meanwhile expressed interest :)
They definitely have experience in renovating old to very old houses; in my opinion, the results have always been good so far.

The first offer (after viewing) from him was below the bank’s initial estimate, also "slightly" below my asking price. Still not completely outside the range. A more precise estimate from the bank would only be given after a preliminary building inquiry, which would then force me to solely market through the bank. I generally don’t like that. Moreover, only the target group of investors with the goal "demolition + new construction" would be addressed here and the outcome (sale price and timing) would be quite uncertain.

If I now put the property online, it would be the only one in the town (which is located in the commuter belt of Münster).
There is actually zero supply here.

There can also be no comparable price due to the year of construction and condition.
The architect estimates renovation costs at 70K, for which the roof and balcony are to be newly built from galvanized steel, probably also urgently necessary work inside.

I tend to estimate the effort higher, but it’s not my job to clarify that.

I think sale price + renovation and current or expected net cold rent result in a higher possible sale price with still attractive returns. But I’m not sure if a first offer can be about 20% below sale price (meaning if he will add the approx. 20% that I would like to get). Also whether one should/can/may "calculate backwards" like that?

I currently (still) don’t want to start an open bidding process because I’m not under any pressure. I definitely don’t want to "burn" the property. Whether I sell now or next year doesn’t really matter to me. Rising prices are not really excluded ;) and I still get full rent for the hut until probably autumn of this year. However, once I’ve decided to sell, I would also like to get it over with.

How do I now find out a reasonable price? I have worked through the 29 pages "Strategy for selling a house," but unfortunately, I couldn’t find a clear answer for myself. Also, on ’s homepage, I didn’t find a clear approach for my property :rolleyes:

Any ideas?

I also did not find a clear procedure for my object on @11ant's homepage

Measured by the special case of a gem, my information offer is comparatively mainstream ... but whoever has found the way there also knows the way to me ;-)

Small update and question:

The house is now sold (at least the price is agreed, the purchase was sealed with a handshake).

The key and money handover is planned for December / January as soon as our office has completely moved out/reinstalled and the house can be handed over "broom clean."

However, the notary contract is to be done beforehand.

In your opinion, what things should I pay special attention to?

Who chooses the notary? (better me?)
Who pays the notary? (half each?)
It is an old house with many minor and major defects.
How is this documented so that the buyer does not later "come around the corner" with hidden defects?
etc.