ᐅ What is the best way to add a double garage afterwards?

Created on: 2 Apr 2021 17:53
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StuttgartDHH
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StuttgartDHH
2 Apr 2021 17:53
Hello everyone,

First of all: I have checked all the subforums, and there isn’t one specifically dedicated to garages, so I hope this topic fits here.

In 2014, we bought a semi-detached house (see my previous thread on D&Z construction) and only chose the standard two parking spaces. One of the parking spaces is wider, as it was intended for a garage. However, we were the only party in the development who decided not to build it at that time. Now we want to make up for that by building a double garage. I have already clarified this with the local authorities – I have permission to build a suitable garage. The question now is how to best approach this, as I am still in the idea stage.

Reasons why we want a garage: to keep the car protected from the weather. In 2022, we plan to get a fully electric vehicle. Its charging station will be installed inside the garage. Charging will be powered by photovoltaic panels, which we plan to place on the garage roof. Routing electricity from the house is not an option because it would require crossing two other properties.

When thinking about garages, we imagine solid masonry garages – are there other alternatives? Ideally, we would like the foundation, garage, and solar installation all from one provider. However, that doesn’t seem to be available. Some garage manufacturers still offer foundation installation, but rooftop solar solutions rarely appear – and if they do, it’s usually just in preparation stages or links to specialized partners that lead nowhere.
I have contacted a few major manufacturers for quotes. Since the width is fixed by the parking spaces (5.45m (17.9 feet)), some options are already ruled out because they generally only build 6m (19.7 feet) wide garages.
I now have two quotes for a garage without foundation – one for $13,000, the other for $18,000. Both include sectional doors with electric openers.
This seems very expensive to me, and the price difference is huge. Are there cheaper types of garages? Is it advisable to have the foundation done separately, or should everything always come from one provider?
Is it also possible to build the garage with traditional "brick on brick" masonry, or is this not very practical? When I visit the garage manufacturers’ websites, some offer to deliver the garage as a kit. Is that recommendable, or is it unrealistic for a layperson whose experience is just “has assembled IKEA furniture once or twice”?

Best regards,
StuttgartDHH
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Ralle90
2 Apr 2021 18:20
I think a local construction company that builds complete houses can probably also provide you with a full quote for the garage with a photovoltaic system.

What type of garage are the quotes for? Is the garage planned with a pitched roof because of the photovoltaic system, or with a flat roof?

Of course, there is also the option to install a prefab garage. In that case, it is common for the foundation to be built by a different company. You would probably also need to commission the photovoltaic system from a separate specialist.

What material is the kit garage made of? I don’t imagine the construction to be that simple if you have no experience with it. And you will also need a foundation or possibly even a concrete slab.

There are many possibilities: prefab garage, solid brick built stone on stone, timber in a timber frame construction, metal...
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StuttgartDHH
2 Apr 2021 19:15
To be honest, I hadn’t thought of asking a regular construction company. I’ll make sure to call one tomorrow.

The garage offers were always prefabricated garages with flat roofs.

Alright, then probably not a self-build. I’ll need to look up the materials again.
11ant2 Apr 2021 20:57
StuttgartDHH schrieb:

In 2014, we bought a semi-detached house (see my previous thread about D&Z construction) and only took the standard two parking spaces. One of the parking spaces is wider because it was intended for a garage. At that time, we were the only party in the development who decided not to build one. Now we want to catch up and build a double garage instead. [...] Running electricity from the house is unfortunately not an option because we would have to cross two other properties.

In which part of your earlier thread can I find a description of the property? I’m missing a clear spatial picture: semi-detached houses are usually built where the width wouldn’t allow for double garages — and crossing two other properties suggests the garage building site is somewhat detached from the main house lot (how should I understand the site coverage ratio in this case?).
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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hanse987
2 Apr 2021 21:12
If I understand correctly, the house and garage are separate buildings. How do you get electricity to the garage? Do you have a separate connection?
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StuttgartDHH
2 Apr 2021 21:46
11ant schrieb:

Where in your previous thread would I find a description of the property? – I’m missing a spatial understanding: semi-detached houses are usually built where double garages wouldn’t fit – and by "through two other plots" I interpret this as a satellite location of the garage site (how should I imagine this in terms of floor area ratio alone?) relative to the house plot.

There are three semi-detached houses, none of which generally include garages. The garages and parking spaces are grouped together and located externally.
"Satellite location" seems appropriate, although I’m not familiar with that term. The thread itself focused more on the construction company, so I didn’t describe this in detail there.
The green square marked in the attachment is the site for our double garage – the single garage shown there never existed. Our semi-detached house is "Residence 2."
hanse987 schrieb:

If I understand correctly, the house and garage are separate. How will you get electricity to the garage? A separate connection?

The electricity is supposed to come from the solar panels on the garage roof. If I could have a power cable installed from our semi-detached house to the garage, then the solar panels on the garage wouldn’t be necessary.

Site plan of a development area: red residential buildings, street dimensions, and green spaces.