Cost estimate single-family house with granny flat in Hessen

We are also a few from Hesse and are facing the decision of how we want to build. Could you give us some information about your shell builder via a message? He really seems attractive.

That’s how you wrote in another thread where you asked someone to name their shell builder. And further:

We have a rough draft plan. were discouraged because of the additional costs, although I would look at that again. The soil survey actually does not really speak against a basement.

At first, that sounded to me as if you already had a plan suitable for the pre-selection of construction companies. Now I read

we want to realize our dream of a home and have a , as well as a first own plan created. However, this will be professionally refined and from it a building application derived in cooperation with an architect.

... however not yet crowned by at least a preliminary draft in pictorial representation :-(

I’m just wondering about your sqm prices for a shell house. The sqm prices you named are what we received from turnkey providers. Not that we confuse something here or expressed ourselves unclearly.

So there was some basis for inquiries with turnkey providers after all?

Max roof pitch up to 10 degrees

Ouch. And needs explanation.

40 single-family house with two-story granny flat

two-story granny flat, second ouch...

Solid construction (Poroton or precast concrete construction favored)

...and first please explain why you already specify a direction in the building method and secondly also why you prefer the combination of KfW40 on the one hand and a masonry construction on the other.

Living area main house approx. 160 sqm
- Living area granny flat approx. 80 sqm
Division of trades
- We can cover electrical work, painting, laying floor coverings, and final sanitary installation
- We would like to contract out the rest
Our budget for the project is approx. 500k. We need the KfW standard to access KfW funds.

Granny flat, total 240 sqm, finishing level "move-in ready minus", KfW apparently an essential financing component:
all that tells me you should take ten steps back, otherwise it will become shaky and expensive.
Somehow I strongly suspect you have a rather mixed salad of half-baked ideas in your head that should first be organized.

Phew, the classic mistake of planning a granny flat even though/because you can’t afford your own house… Sorry, that had to be said

Our budget for the project is about 500k.

Is that just for the house? Are the additional construction costs separate?

I’m just wondering about your price per sqm for a shell house.

You’re not talking about a shell house.

Finishing stage “move-in ready minus”,

Exactly…

we got from turnkey providers.

… turnkey still means you have to organize the painting and flooring yourself, so that’s on top of the budget. What you didn’t offer were small helper jobs that the construction company doesn’t properly pay for, meaning: stuff you can’t save on as then many guarantees would become void.

In the main house, we only need the kitchen cabinets, since we have new electrical appliances.

Also here: a kitchen studio won’t give you 50% off. They have to make a profit somewhere.

We are leaving garage and outdoor area aside in the first step or will do those bit by bit on our own.

But employees are not included in the 500,000€?! So they don’t even have to be mentioned. By the way: who wants to live in the granny flat if their parking spot is not accessible?

two-story granny flat second ouch ...

Cool :) .. but nobody needs that. That would be two staircases :D

If you build without a granny flat, you can manage with 500,000€.

You had written in another thread where you asked someone to name their shell builder. And further:

At first, it sounded to me as if you already had a planning suitable for the preselection of construction companies. Now I read

... however, not yet crowned by at least a preliminary draft in pictorial representation :-(

So there was some basis for inquiries with turnkey providers after all?

Ouch. And requires explanation.

Two-story granny flat, second ouch ...

... and first, please explain why you’re already setting a direction in construction method and secondly also why you prefer the combination of KfW40 on the one hand and masonry construction on the other.

Granny flat, total 240 sqm, finish level "move-in ready minus", KfW apparently a significant part of financing: all that tells me you should take ten steps back, otherwise it will become unstable and expensive.
Somehow I strongly suspect you have a rather mixed salad of half-baked ideas in your head that should first be organized.

The preliminary draft is in progress. We have an interim status, but the final design planning will still take a little longer. I could at most show you our interim status.

0-10 degree roof pitch is unfortunately mandated by the development plan. It was not our decision :-(

To reduce the second ouch, we also considered reducing the granny flat to one story. With two stories, we would only have the advantage in old age to live barrier-free on the ground floor and possibly rent out the upper floor.

How do I best explain why we are so fixated on a solid construction method? We simply like it. In the show home park, we just liked the feel of stone houses better. KfW 40 is indeed part of the financing to benefit from the low-interest loans.

Hm, to be honest, I feel the same way. Do you perhaps have tips on how best to structure something like this or with whom we should exchange ideas in your opinion before we plan a shaky house of cards that might collapse afterward or overwhelm us with costs?

Do you possibly have tips on how to best structure something like this

Plenty, but the look at the clock says: more tomorrow :)

Phew, the classic mistake of planning a granny flat even though/because you can't afford your own house... Sorry, that had to be said

Is that supposed to be just for the house? Are the additional construction costs separate?

You're not talking about a shell construction.

Exactly…

… turnkey also means you have to organize painting and flooring yourself, so that adds to the budget. What you don’t offer were small auxiliary tasks that the construction company does not pay for appreciatively, meaning: where you can’t save money because many guarantees would then be void.

Also here: a kitchen studio won’t give you 50% off. They have to earn something somewhere.

But employees are not even included in the 500,000€?! So they don't have to be mentioned at all. By the way: who wants to live in the granny flat if their parking space is not walkable?

Cool :) .. but no one needs that. That would be two staircases :D

If you built without a granny flat, you’d manage with 500,000€.

Who says we can’t afford the construction and that’s why we’re planning with a granny flat? :) In discussions with the general contractors it was priced at about 90-100k and for that you definitely don’t get a new apartment in our area, and due to the achievable rental income, it was simply lucrative.

We have calculated the additional construction costs separately at about 50k.

I think we can disregard the kitchen. I’ll be happy if we just have a plan of action for the house itself.

The granny flat would actually have its own entrance, walkable parking space, and garden area. Almost like a semi-detached house but without its own technical room, etc., that’s why I didn’t call it a semi-detached house. At some point, it would also be conceivable that my parents move in when they are older.

Thanks to everyone so far for your feedback; it does take time that you are spending.

800k including additional construction costs The "contacts" for materials I also have, but in the end you save less than you think you do