Project multifamily house: Questions about costs and procedure

Do you own half of the property (750m²)? If yes: Can you also make a deal with the builder and save yourself the hassle: He gets the property (value: 750m² * €650/m² = €487,500). He develops the property and sells you an apartment of 160m² (value: 160m² * €4,300/m² = €688,000) for the difference of just under €200k. However, you need to discuss the tax implications with a tax advisor. He is happy and you have a great apartment in a prime location worth €688k and only owe €200k for it. The bank would probably also offer a good interest rate.

No, I could only acquire it somewhat cheaper than the market price. Therefore, it would be interesting if, by offering an apartment cheaper than a developer, one could realize the whole thing oneself. Actually, an architect or general contractor should be able to provide relatively precise information about the costs of a project you want to realize with them, right? But as I said, if I do the whole thing for the same money without profit as a developer with their profit, it naturally does not pay off for me personally. That's why I thought there are people who already have experience with this. There are still plenty of private individuals who own a multi-family house....

... this calculation only works for people who bring A LOT of knowledge in this area and own contribution – which is then not charged – into the construction.

Neither of these seems to apply to you, on the contrary – you don't even seem to have the slightest idea about the subject. You can be 99% sure that the 'fun' will end up costing you more than if you buy from the construction company.

Of course, I have no idea! That’s why I’m asking here and want to discuss the topic.

I don’t want to play architect myself or assign the trades to the craftsmen.

My question is simply whether it makes sense financially, for example, to find an architect to plan the house and then to find a general contractor or construction company for execution, or, for example, to have the planning done by a general contractor, and what something like this would approximately cost for this type of project and whether it can be roughly calculated based on the price per m2.

The goal is to get the same building quality as when buying a new build but cheaper, in order to build more affordably for personal use. Is this possible or are there reference values for an m2 price for a multi-family house with about 350 m2 and 4 apartments?
I already have the land costs.

You can have the construction costs calculated by a general contractor or construction company and then see if it’s worth it with the fittings or if you can give up on it... So I know what to expect or am I wrong here?

If someone here has experience in this area and says you can forget about the costs 100% because it will be more expensive compared to P&P Immobilien or Schultheiss with your own project, that’s also okay. But I’d really like to discuss experiences here.

I can’t be the first person who considers not buying a single-family house but a 4 or 5 unit house with the intention of owner-occupancy and renting out.

We found an architect who is familiar with multi-family houses. From 3 residential units [WEH] onwards, there are additional rules. As already mentioned, calculate the cubic volume (enclosed space) and multiply the value by 400 euros per cubic meter. Under normal circumstances, this should allow for good planning and at least give you a rough estimate.
We use the all-around carefree package, meaning we also have the individual trades tendered by our architect. Forget the idea of contacting companies yourself. You need a lot of expertise in the subject matter, as well as a great deal of time, patience, and thick skin. Even then, you hardly have any bargaining power; it’s more a take-it-or-leave-it situation.
Today, I skimmed through the specification for the civil and shell construction – I never ever would have managed that myself.
By the way, there is no longer a KfW 70. If you mean the old KfW 70, that is currently more or less the standard or the minimum you have to build.
If you are considering an Efficiency House 55, the conditions per residential unit [WEH] might be of interest, especially if you are already planning ventilation and underfloor heating.

Hello everyone,
As part of an inheritance, I have the opportunity within a community of heirs in the Erlangen, Nuremberg Fürth (Bavaria) area to acquire a plot of land from my late aunt in an absolutely top sought-after residential location. The plot is 1500 m2 in size with an old single-family house and could be subdivided. The standard land value is 570 euros per m2.

The standard land value comes, if it is in Erlangen, but surely from the map of December 2014. 570 euros/sqm applies, if I recall correctly, among other places to Alterlangen. Otherwise, it also fits your description. In the meantime, developers have significantly driven up the prices there. I have already seen around 900 euros/sqm there.

Otherwise, contact the usual developers in the area and negotiate a deal with them. Doing it yourself won't be that much cheaper.

Regards
Michael

The standard land value originates from, if it is in Erlangen, but surely from the map of December 2014. 570 Euro/sqm applies there IIRC among others to Alterlangen. It also otherwise fits your description. Meanwhile, developers have driven the prices much higher. I have already seen around 900 Euro/sqm there.

Otherwise, that is, contact the usual developers in the area and negotiate a deal with them. You won't manage to do it cheaper yourself so easily.

Regards Michael

That is correct. Then you know what kind of sought-after building land it is.