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

Created on: 2 Apr 2021 17:53
S
StuttgartDHH
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
S
StuttgartDHH
2 Apr 2021 23:54
Ralle90 schrieb:

Do the other garages there have electricity?
Is it not possible to run a cable from the street? However, I’m not sure what the cost would be if the garage requires an independent electrical connection with its own meter.

The garage to the left of ours and the other parking spaces, I believe, does have electricity – at least they retrofitted an electric operator on the up-and-over door, and I wouldn’t know where else it would get power from. But that’s the garage for house 4. They may have simply had the cable installed through their garden.
I don’t know about the option from the street, but that could be possible. I’ll check with the municipality. Thanks for the input.
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StuttgartDHH
2 Apr 2021 23:56
ypg schrieb:

Minus construction tolerance for the garage on the right side of the plan.

What do you mean by "construction tolerance"? The garages currently there are placed directly next to each other. So no gap was left, if that’s what you mean.
It was the same with the single garage planned on our lot (which was never built) – it was supposed to be attached to the garage directly to the right.
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Zubi123
2 Apr 2021 23:59
An electric car powered solely by a photovoltaic system (even with a battery) will not work. Certainly not with the available installation area of your double garage.
You won’t get enough electricity in winter. Also, the idea of photovoltaic panels and a battery in the car is extremely inefficient due to charging losses.
It’s definitely better to install an additional electrical connection!
Y
ypg
3 Apr 2021 00:09
StuttgartDHH schrieb:

The garages currently there are also built directly next to each other. So, no gap was left, in case that's what you meant.

Because they were constructed together. You cannot build something later with zero clearance. It doesn’t work. If you’re unlucky, the wall might tilt slightly by 1–2 millimeters (0.04–0.08 inches), which would actually create even more gap.
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StuttgartDHH
3 Apr 2021 00:13
ypg schrieb:

Because they were built together. You can’t add something right up against zero distance afterwards. It doesn’t work. If you’re unlucky, the wall might lean by 1-2 millimeters (0.08 inches), which causes even more space to appear.

These are prefabricated garages. I wasn’t there when they were installed, but I imagine they were placed side by side on strip foundations. Now we want to have a foundation made and set our prefabricated garage next to it – what difference does it make if the two garages are placed there 5 hours or 5 years apart? Or am I missing something (which is quite possible – I have never arranged garage installations before)?
Y
ypg
3 Apr 2021 00:21
You can't place or build anything with zero clearance. Not even a piece of furniture against the wall. That should be understandable. But do as you please. Luckily, you're not restricted to centimeters (inches).