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since we are building, it should be energy efficient and we don’t want to use concepts that might soon be politically outdated or unsupported.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?
11ant29 Nov 2020 23:42
WilderSueden schrieb:

By the way, I have now reached a small booklet in which all my thoughts on the topic of house building are more or less organized. One topic, one page, and whenever something comes to mind, I try to add it.
I fully agree with this point.
WilderSueden schrieb:

According to the current situation, only a major soil replacement could restore the basement.
I don’t quite follow you here: how can you not know the soil on one hand, but on the other hand fear that it behaves like pudding below basement depth?
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Y
ypg
30 Nov 2020 01:56
WilderSueden schrieb:

Since the plot is only reserved but cannot yet be purchased, I can’t simply commission a soil survey to get clarity.

Actually, you can. A new housing development usually has a general geotechnical survey... just contact a geologist or ask the local authority whether and when you are allowed to do it.
Climbee30 Nov 2020 08:21
I had a little booklet like that too 🙂
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haydee
30 Nov 2020 09:06
And I have a folder where I keep everything. Printouts, copies, notes.

After the first model home visit, we went through each house again and wrote down what we liked and what we didn’t.
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WilderSueden
30 Nov 2020 18:03
11ant schrieb:

I’m not quite following you here: how can you both not know the soil conditions and yet worry that it might be pudding-like below the basement level?

Perhaps that wasn’t clearly expressed. If construction with a slab foundation required soil replacement down to basement depth, we’d probably include the basement after all. However, that would suddenly become significantly more expensive, which I want to avoid. It would also make different floor plans more practical if the utility room is located in the basement.

Getting a general soil report is a good idea.

haydee schrieb:

After visiting the first show home, we went through every house again and noted what we liked and what we didn’t.

Visiting show homes is mostly theoretical anyway. Most are way too large for our needs—I don’t see why I’d need kids’ rooms of 20cm (8 inches) and more. (Note: likely intended 20sqm (215 sq ft), please confirm.) And of course, show homes are always finished like a $50,000 car...
Visiting my cousin was quite helpful, since they built about the same size and you can learn a bit from that. Since then, I’m no longer worried about our slope at all.
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haydee
30 Nov 2020 18:47
Well, there are also small and simple model homes. That’s not the point. You don’t have to choose your house there. You can
- start discussing with your partner that the fixtures should be square-shaped,
- learn to pay attention to enough space (in fact, we visited a model home where the oven would only open if you stood to the side),
- adopt nice features and solutions,
- avoid poorly designed ones for yourselves.

We took notes everywhere. Also at friends’ and relatives’ houses. From an entrance area that was too small, to a cramped bathroom, up to the perfect dining area or a great color scheme.