ᐅ New Single-Family Home Construction in Southern Germany

Created on: 18 Nov 2020 00:43
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WilderSueden
Hello everyone,
after jumping straight into the basement discussion thread, I want to use this one as an introduction and idea-sharing thread. Some things might seem a bit chaotic at first, but that will surely clear up.

We are expecting our first child in February. Since two rooms are obviously too few for the long term, we need something larger. The housing market here in Konstanz is notoriously difficult, so we didn’t spend much time searching here. Thanks to Corona home office, we focused on areas a bit further away right from the start. Initially, we looked mostly at existing properties, but due to the poor condition of what’s on offer, we unexpectedly ended up deciding to build. We were actually lucky to get a plot in a new development area around Stockach-Pfullendorf. The site started being developed this week and will probably be buildable from summer onward.

Here are some key details:
- He/I am 33, work in the software industry, based in Konstanz, from a rural area
- She is 41, a teacher in the Hegau region, from a city that basically doesn’t exist
- One child on the way, no further children planned and unlikely due to her age
- Currently living in about 65sqm (700 sq ft) with 2.5 rooms in a lovely apartment building…
- Basically, we don’t want anything too fancy—no extensive smart home automation, no luxury mansion with marble and so on. Just something solid and nice. We are not building to fulfill a lifelong dream but to avoid renovating an old house worth half a million euros. Plain wallpaper texture and laminate flooring would be fine for us if the quality is good.
- Accordingly, we don’t mind using a “standard” floor plan from a prefabricated house builder or a typical model home.
- That said, since we are building, it should be energy efficient and we don’t want to use concepts that might soon be politically outdated or unsupported.
- Do-it-yourself work only to a limited extent, as we are neither professionals nor do we have relevant contacts. Also, the new house is a bit further away, so working on it in the evening is unlikely. A weekend of painting before moving in is no problem, and after moving in, doing the carport, terrace, and garden ourselves is also fine.
- The construction partner must be reliable.

Plot and financials:
- Plot roughly 700sqm (7,535 sq ft) at 98€ per sqm → 70,000€, fairly rectangular
- 120,000€ equity (with some reserve left)
- Financing and ownership entirely in my name (unmarried and no joint assets intended)
- Planned overall budget about 500,000€
- Target monthly payment 1,500€
- Accordingly, loan to be repaid in 25 years with that rate, with some extra repayments planned mid-term aiming for about 20 years total

Budget breakdown:
- Plot 70,000€
- Ancillary plot costs 5,000€
- Other construction-related fees 60,000€
- Basement 50,000€
- Kitchen 10,000€
- Driveway, carport, terrace as DIY 15,000€
-----
210,000€
Leaves about 290,000€ in the budget for the house itself, which is probably quite tight for what we have planned. The budget still needs to be adjusted with a buffer.

So far, our wishlist looks roughly like this:
- Not excessively large, more like 120–130sqm (1,290–1,400 sq ft)
- Efficient, modern house
- Photovoltaic system (possibly with battery storage)
- Underfloor heating with heat pump
- Home office for me on the ground floor (makes sense since I mostly work from home)
- Bedroom upstairs, one office for her that also serves as a guest room and reserve nursery
- Large open-plan kitchen/living area
- Basement
- Cistern
- Carport for two cars and one trailer

Our first contact about building was through an ad from the local Town & Country partner. The consultant was friendly, and the show house in Geisingen looked quite nice, but somehow it all felt a bit too conservative. Built according to the Energy Saving Ordinance 2016, standard gas heating. Sure, upgrades are possible, but I’m not sure if a heat pump makes sense under that regulation anymore. The fact that the show house had cracks in the plaster here and there isn’t exactly reassuring either. But the base price is lower. Current status: two meetings, visited the show house, haven’t requested the scope of services yet.

Then we looked a bit into prefab houses. Most offer KfW55 standard, which is closer to what we want and would be a good base for going to KfW40+ since a photovoltaic system is already planned (probably just with battery preparation though). Visited the park in Villingen-Schwenningen. Had a long chat with Schwabenhaus; the consultant seemed to want to downplay costs and was very keen to sell a ground-source heat pump with boreholes. The upgrade options for the promotional houses looked likely to increase costs significantly. Visited Heldhaus, liked it quite a lot but their cost outline overshoots the budget by roughly 100,000€.

Today we had an appointment with Schwörerhaus. The floor plan of one of their promotional houses fits pretty well. Basement plus KfW40+ seems somewhat challenging in combination. Otherwise, a generally good impression; the briefly reviewed scope of services doesn’t give the impression the house would be unpleasant to live in. Let’s see what the first offer will look like. I don’t get the feeling there’s much that could go wrong there.

Next week we have an appointment with Weberhaus. We found a floor plan we really like. The price is initially the highest, but their examples include KfW40+ standard and smart home automation upfront.

Our goal is to narrow down the number of companies we continue with to a maximum of two by Christmas and then decide on a construction partner early next year. In spring, the baby will take priority, not just house planning.

I’ve already posted some thoughts about the basement and possible basement substitutes. The insulation costs for the basement seem to fully consume the additional subsidies, so the photovoltaic battery would have to be paid out of pocket again. One idea on the drive back from the appointment was whether it makes sense to build the house initially to KfW55 standard without extra insulation. The difference in heating costs is relatively small. Then install just the conduit pipes for photovoltaics with battery preparation. A few years later, add a battery once prices drop. That would also likely bring the house closer to the planned budget than going for KfW40+.

These are my thoughts so far. Have I missed anything important?
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haydee
28 Dec 2020 20:37
And both home offices upstairs, making the child's room slightly smaller and allowing more space in the open-plan living area downstairs.
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pagoni2020
28 Dec 2020 21:07
haydee schrieb:

And both offices upstairs, with the child's room a bit smaller, and more space downstairs in the open-plan living area
Yep, good idea.
Nida35a28 Dec 2020 22:43
In the first few years, experience has shown that having a 1–10 m² (11–108 ft²) play area within the open-plan living space works well, as the child wants to be nearby.
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WilderSueden
28 Dec 2020 22:44
Nida35a schrieb:

Maybe it helps to think of the open-plan living area as the family room, and all the children’s and work/guest rooms as retreat spaces that don’t necessarily need to be very large.
About 90% of daily activities take place in the open-plan area: living, cooking, playing, eating (even with 15 guests), extended in summer by the terrace.
When we considered this, we were able to better allocate room sizes.

That is the big question we find hard to answer. Currently, everything ends up in the living room because the only real alternative is the bedroom. It’s possible that activities will shift to the other rooms (especially the child playing with or without friends), but it could also go the other way. Sacrificing everything to the open-plan living area and pushing the other rooms upstairs means only that option works. The rooms created upstairs then become very small (about 10sqm (108 sq ft)), and in the mezzanine level a dormer window is practically mandatory to provide enough natural light to the central space. We briefly discussed the Flair 134 floor plan from Town & Country, which fits this concept. But we preferred the approach with proper rooms upstairs and then used the Bodensee 129 as our further basis. In the end, I don’t really find 37sqm (398 sq ft) for the open-plan living area small. That would give a kitchen of around 11sqm (118 sq ft) and a living/dining area of 25sqm (269 sq ft). Comparing that to the current 19sqm (204 sq ft) living/dining room, and removing things like the desk and adding a larger sofa in my mind, it should work out.
Nida35a28 Dec 2020 23:08
Our practical experience with room sizes is as follows:
Office/guest room 10–12 sqm (108–129 sq ft),
Child’s room around 10 sqm (108 sq ft) is tight, 15 sqm (161 sq ft) is spacious, any larger and cleaning up never gets finished,
Bedroom 15 sqm (161 sq ft), enough space for a wardrobe and yoga area; walk-in closets are a trend mostly necessary only for shift work.
Kitchen 10 sqm (108 sq ft)
Dining/living/play area 30–40 sqm (323–431 sq ft).
Our children and grandchildren spread Duplo, books, toy cars, dolls, and farm sets over 5–10 sqm (54–108 sq ft).
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haydee
28 Dec 2020 23:13
We used to have this size for the living/dining area.

The three of us were bursting at the seams.

Try drawing in living space, a table for more than three people, and a play area.

We wouldn’t manage at all with that anymore. I never would have thought so. A lot has changed this year. For us, the open-plan room is the central hub—playing, hobbies, work, eating, and gathering.