ᐅ Double garage for two vehicles with an attached carport

Created on: 13 Dec 2024 00:25
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goldfisch138
Hello everyone,

We are currently in the final stages of building our house and are facing a fundamental issue.
We are constructing a multi-family house (upper floor rented out / 100 m² (1,076 sq ft)) and will also be moving in ourselves. My wish is to have a double garage for two vehicles.
Due to the large floor area of the garage, the idea arose over time to include a basement underneath, which is why a staircase (1 m (3.3 ft) wide instead of 1.10 m (3.6 ft) as originally planned) has now been added.
However, I am now concerned that the remaining width of 5.44 m (17.9 ft) may be a bit too narrow. The mason has suggested, since the garage will be built with masonry anyway, extending the width by 50 cm (20 inches) outward toward the property boundary. This would leave a remaining width of 3.03 m (10 ft) between a potential carport next to the garage and the property boundary. The adjacent property is family-owned.

The question is whether this idea of extending the garage is feasible and compatible with the basement staircase. We would prefer not to park cars in front of the garage or only fit one car inside, as the garage is intended exclusively for our use as landlords. The second option would be to omit the basement staircase – which we would rather avoid.

We would appreciate external opinions to get a better understanding of the situation.

I look forward to hearing about your experiences.

Best regards
Architectural floor plan of an interior space with dimension lines, walls, and building elements.

Floor plan: red building areas 'Whs' and 'Gar' with dimensions and height indication.
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goldfisch138
18 Dec 2024 20:25
So, here is the situation: The basement is already built, and now it has been noticed that the garage is too narrow to fit two cars. There is still a 4m (13 feet) side clearance to the property boundary. The basement builder offered to widen the garage by up to 90cm (35 inches), which would leave just over 3 meters (10 feet) for a carport.

The staircase could also be relocated, but there is a spiral staircase inside the house, which makes it difficult to carry items like bicycles upstairs. Therefore, the main focus is on the garage entrance.

In terms of depth, we could also extend by another 50cm (20 inches), which would help improve the layout a bit.
11ant18 Dec 2024 21:35
I never thought my understanding of station construction could be challenged like this. I feel like I’m on a hidden camera show and consider this thread to be a (bad) joke:
goldfisch138 schrieb:

So, the issue is as follows: the basement is already built, and now it has been noticed that the garage is too narrow to fit two cars. There is still a 4m (13 feet) distance to the property boundary on the side. The basement builder suggested that the garage could be widened by up to 90cm (35 inches), which would leave a little over 3 meters (10 feet) for a carport.

Which basement is already built — the house’s basement — but the garage attached to the house should also have one and is still adjustable? So the die is cast for the house’s basement up to and including the basement ceiling, while the garage is at what stage: without slab yet, or not even excavated?
goldfisch138 schrieb:

The stair could also be moved again, but since there is a spiral staircase in the house, it makes it difficult to carry things like bicycles up or down. So mainly the garage stair is considered.

Which staircase are we talking about, and what would be the benefit of moving it again?
goldfisch138 schrieb:

In depth, we could also move out another 50cm (20 inches), which would somewhat ease the situation.

In which depth? Move or extend the garage backwards?

If the other drawings are even half as unclear as those shown so far, it’s hard for me to imagine how anyone managed to interpret the plans well enough to advance the basement construction this far. I feel, reminiscent of Reich-Ranicki, unsure if there is even a curtain here, with all questions still open. I ask again to the group: “Can anyone ‘read’ what story is being presented here?”
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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goldfisch138
18 Dec 2024 22:21
Hello @11ant,
I will try to explain the current situation in more detail.

We are building a two-family house with a garage and a basement (also under the garage). We are currently at the stage where the precast basement walls are installed and about 75% of the walls have been concreted. The next step is to concrete the basement ceiling. The entire basement structure (house + garage basement) is already in place. At the moment, we have installed the conduits for the electrical boxes on the basement ceiling and now face the challenge that we noticed the garage is not wide enough for 2 cars – also because of the planned 1m (3.3 ft) wide basement staircase there. According to the plans, the usable width here is currently 5.44m (17.9 ft), so we have discussed with the basement planner the option to widen the garage ceiling and reinforce it with additional rebar beforehand. It is possible to widen the garage by up to 90cm (35 inches).
11ant schrieb:

Which of the staircases, and what would be the benefit of removing it?

The basement access staircase in the garage, which is 1m (3.3 ft) wide, is meant here. It is currently just resting on top and could be removed again if necessary. The opening would then need to be shuttered and supported from below to be able to concrete it if the staircase is removed.
11ant schrieb:

At what depth, to move the garage (backwards?), or to extend it?

The idea is to extend the garage in depth by up to 50cm (20 inches) to gain space for bicycles or a small shelf.

My main priority is to have two parking spaces inside the garage, followed by possibly a carport. We plan to rent out the first floor, so we would like to offer a parking space for the tenant’s car next to the garage (even if it is a bit tight). On the side of the garage, we still have a free space of about 4m (13.1 ft) for a potential carport. The final width depends on how much the garage is widened.

Therefore, I would like to ask for your expertise and ideas to help realize this project.
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goldfisch138
19 Dec 2024 00:01
I have also added a graphic that possibly simplifies the current construction situation.
The blue area represents the potential extension that can be made (maximum 90 cm (35 inches)). I am wondering if widening the garage could allow for two cars to fit inside while still keeping the carport (currently 4 m (13 feet)) in place.
Rohbau-Fundament: Baugrube mit Schalung, Bewehrung und Materialien
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kbt09
19 Dec 2024 01:22
There are so many questions. Is it possible for the driveway to be wide enough to actually reach the carport?

Also, storing bicycles behind the cars – you always need to consider that the cars must be parked in a way that allows the bicycles to fit through easily.

And what is supposed to be stored in this basement? It will be tight to get around the corner of the stair wall downstairs.

Architekturgrundriss eines Raums mit Maßen, Wänden und Türen
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goldfisch138
19 Dec 2024 02:03
kbt09 schrieb:

There are so many questions. Can the driveway be made wide enough for the carport to actually be accessible?

And storing bicycles behind the cars... you always have to consider that the cars will need to be parked in a way that the bicycles can fit through easily.

Also, what is going to be stored in this basement? It will be tight down there to get around the corner of the stairwell wall.
[ATTACH alt="double garage for 2 vehicles with adjoining carport-678011-1.png"]89386[/ATTACH]

The basement stairs are actually intended to serve as a kind of mudroom, since the utility room is located to the left of the basement stairs. From there, you could enter the house via the spiral staircase.
kbt09 schrieb:

There are so many questions. Can the driveway be made wide enough for the carport to actually be accessible?

Measured diagonally, it is 2.50m (8 feet 2 inches) – which seems very tight to me.

Regarding the use of internal stairs, I have little experience since I have never had any and have simply never lived in a detached house before. I think the stairs could be omitted, but then I would have no alternative access except the narrow spiral staircase. None of this is ideal.

What would you advise me?