Construction company wanted in the Stuttgart metropolitan area!

I also want to write something here. Many thanks for your reports. I come from the Böblingen area and your tips regarding provider search were very interesting. I only came across Köhler after your post.

Regarding the previous posts, I would like to note: With so many inquiries that providers receive, they have so many standard floor plans and cost breakdowns, it should take a maximum of one hour to compile an offer using software. I wonder anyway why you can’t simply enter your desired house and plot data (rooms, floors, orientation) via an online login with the providers and then get something spit out, e.g. like when buying a car, where you can set detailed filters in portals. All doable with good software.
Very annoying is also the way the (prefabricated house) providers deal with us builders. One phone call is rarely enough, face-to-face (F2F) meetings are a must. Videoconferences are sometimes grumbled at and only reluctantly agreed upon. The salespeople would rather drive 100 km back and forth to one or even want to show you the company first!! (Like Fertighaus Weiss and Schwörerhaus). They waste a lot of time and money – it could be much easier for both sides! The advantage of video consultation is also screen sharing and live price determination. That’s much better than F2F at someone’s home without the consultants having access to their system.

Another tip for provider search for newcomers: Rummaging through and ordering catalogs is pointless. Better first go to a freelance architect to talk about the structural possibilities on the plot (requirements regarding height, roof shape, orientation, etc.) as well as floor plans (orientation of the rooms according to cardinal points) and have some drawn (or draw them yourself). Then approach providers with as concrete data as possible (e.g. KfW standard, heating — first to an energy consultant? — price expectations, etc.) and for example have multiple meetings in Fellbach on one day. There the advisors have access to their software. The meetings are very important because you learn a lot from each conversation and are prompted to think. That brings the most besides the books from consumer centers and Stiftung Warentest.

We have currently scanned (goal: detached single-family house, about 140 m² fully basement):
Price range from providers for the house without incidental costs (earthworks, connections, exterior facilities, fees for road closures and building permits, etc. = around 100K!!) but with architect and planning: €410,000–480,000.
Prefabricated house providers (offers unfortunately only after face-to-face meeting):

Provider	Comment
Streif Haus	Very dedicated advisor, almost too dedicated, fastest construction time among providers. Model house in Fellbach feels very cheap, low material quality.
Weberhaus	Good advisor, but air-to-air heat pump as a basic concept? Please no... Responded late. Model house in Fellbach pretty and relatively valuable.
Fingerhaus	Good advisor (Great: video was easily possible), good breakdown of items +/- options with own price, favorite! Also overview of incidental construction costs – top!
Kampa	Good advisors (2 came together), good offer discussion. Offer + description of construction performance only printed. Model house in Fellbach seems very cheap, but is from 2008, the guy in the house there knows a lot.
Fertighaus Weiss	Good contact, calls, engaged. But no offer, you have to visit the company somewhere in the middle of nowhere first -> no way!
Schwörerhaus	Contact responds poorly, no offer, you have to visit the company somewhere in the middle of nowhere first -> no way! Model houses in Fellbach but of good quality.
Haas Haus	Good assigned advisor, calls, offers conversation via Teams by email. Preliminary draft only floor plan. Decent house in Fellbach, advisor chats you up on site, exhausting.
Town & Country Haus	Quote: Floor plan request (they were normal, usual single-family house floor plans!) too complicated, go somewhere else -> unbelievable!
Hanse Haus	"We will get back to you" -> Nothing happens!

Solid house providers:

Provider	Comment
Hauser Massivhaus	Quick response, appealing offer as PDF (can confirm the positive impression from above!) without F2F meeting, good offer with +/- options including price
Einstein Haus	Respond quickly, offer as PDF without F2F meeting but unfortunately very brief, good and illustrated construction performance description, no prices for options
HEFA Holz- & Massivhaus GmbH (mymassivhaus.de partner)	Good contact, clear construction performance description with good photos, needs analysis including concrete incidental construction costs – great! Offer only after F2F meeting
Heinz von Heiden	Excellent advisor, offer only after F2F meeting, immediately delivered very good floor plans, best incidental cost list ever seen, +/- options in the offer, fair price – big favorite!
Haiss-Massivhaus	No longer accepting customers
b + m Schlüsselfertiges Bauen GmbH	No offer, quote (snappy): At that price we won’t do it, you can forget it.
Attraktives Wohnen (partner of Favorit Massivhaus)	Inquiry ongoing
Lechner Massivhaus, Kern-Haus	No response for over 2 weeks
AWS Haus	Desired house not feasible (only possible from €500,000)
Wochner-Haus	Desired house not feasible (only possible from €500,000)
Köhler	Inquiry ongoing

Great overview are working on the same activities - simultaneously looking for a freelance architect who charges a flat rate (Leistungsphase 1-3) in the Stuttgart area - anyone have a recommendation?

Many thanks to you for your efforts. We are also not aiming to choose the cheapest provider; I was simply interested in how you ended up price-wise. Köhler is currently actually our favorite, and I can well imagine that he will be awarded the contract. They do make a very competent impression, and the houses I have seen so far all looked visually appealing. Indeed, the appearance is also important to me. For us, however, the most important thing is to have a reliable partner who can implement our special requests. Hauser was not able to do that.

[*]Hauser was by far the cheapest in comparison. Which you can also notice in the execution. Thin lightweight clay walls with ETICS.
[*]Fermo was the most expensive, but they do all trades themselves and often offer inspections before moving in, so they are very open.
[*]Härtter builds rather standard, so special requests are not so welcome it seems.
[*]Bauart is also very competent and committed, but unfortunately the technology didn’t fit with us, they are not very flexible.
[*]U-Haus also very competent, you receive floor plans and 3D views during the inquiry phase. We found the model homes not quite as nicely finished in terms of quality, also somewhat more expensive in our case.
[*]AWS was really top, could fulfill all special requests, communication and also personally really great. But they are a pure general contractor and subcontract all trades. Although they also work with high quality. Price-wise somewhat mid-range.
[*]Köhler was ultimately our favorite, enthusiastic about special solutions, communication and also personally also great. But you need floor plans to get a reliable calculation or you have to conclude a planning contract. The first price estimate based on volume was far too high. After calculation also mid-range. Köhler builds not only single-family homes but also industrial buildings, apartment buildings, etc. Therefore, a lot of experience with civil and structural engineering and tries to apply these strengths. For example, they were the only ones who did not offer a prefabricated garage but a concrete garage connected to the house.

[*]Köhler
[*]AWS
[*]U-Haus
[*]Fermo
[*]Bauart
[*]Härtter
[*]Lechner Massivhaus
[*]Hauser

We built with Köhler and would do it again anytime. I probably wouldn't even compare anymore.