ᐅ Ideas for Building an Extension Above the Garage to Create Additional Living Space

So, there are the heat pumps / air conditioning units? in the area of the extension. Do you plan to relocate them?

Structurally, this will be a major challenge.

WilderSueden schrieb:

I definitely wouldn’t add a flat roof extension as an external element but rather put a pitched roof on the extension.

It doesn’t really make a difference for the house anyway. Gray facade, gray paving, gray gravel garden. Gray on gray on gray.

Isn’t there any other option? The garage isn’t designed for that and is outside the thermal envelope. Structurally, that would be a disaster, and the room would then be accessible through the dressing room?

Maybe it’s better to take some space from the 50m² (540 sq ft) double garage?

Does the development plan still allow for such an extension?

hanghaus2023 schrieb:

Does the development plan still allow for such an extension?

That would be the first and most important question – because regarding the gray color, I assume the house will still be painted... In that case, I would personally dislike the rock garden, as in our area the local council would have already shown up at the doorstep.

Otherwise:

- Where will the HVAC units be placed?
- Full-surface coverage is hardly possible with this type of boundary construction; @hanghaus2023 is absolutely right about that. I hadn’t considered it, sorry.

Some prefer shades of gray, others white on white. So what? That doesn’t answer the question.

The house appears larger than it actually is.

Creating additional living space by building over the garage, with the challenges of technology, structural engineering, and thermal insulation, is pointless. With the money saved, you could rent a guest room, hobby room, or additional office somewhere else for 15 years.

Option 1: Build an extension on the right side of the house. Even if the site coverage ratio has been reached, you can often achieve a positive outcome through negotiation with the building authority and slightly exceed the limit.

Option 2: Install a fixed staircase to the attic, add a dormer window, and create a room there. However, as far as I know, the height restrictions must be observed in this case.

First of all, thank you for the input.

hanghaus2023 schrieb:

I imagine a shed roof 1 m (3.3 ft) higher than the house at the same roof pitch.

Is that what you meant?

hanghaus2023 schrieb:

There are heat pumps / air conditioning units in the extension area. Do you want to move them?

Structurally, this will be a big challenge.

Yes, they would be relocated.

xMisterDx schrieb:

It doesn’t really matter for the house. Gray facade, gray paving, gray gravel garden. Gray on gray on gray.

Is there no other option? The garage is not designed for this and is outside the thermal envelope. Structurally, this will be a disaster, and the room would then only be accessible through the dressing room?

Maybe better to take some space from the 50 m² (540 sq ft) double garage?

Yes, the dressing room would become the hallway.

hanghaus2023 schrieb:

Does the development plan / building permit allow for such an extension?

There is no development plan.

ypg schrieb:

One prefers gray on gray, another white on white. So what? That doesn’t answer the question.
The house looks bigger than it is.
Creating living space by building over the garage, with the technical, structural, and thermal challenges, is nonsense. With the money saved, you could rent a guest room, hobby room, or extra office somewhere for 15 years.
Option 1: Build the extension on the right side. Even if the site coverage ratio is reached, you can get a positive decision from the building authority with good arguments and possibly slightly exceed limits.
Option 2: Install a fixed staircase to the attic and add a dormer to create a room there. However, as far as I know, the height restriction must be observed in this case.

This is the base plaster, so the color is not yet fixed.
A dormer would theoretically be possible, but the staircase would then have to fit into the dressing room.
Unfortunately, there is a quite thick beam in the attic which limits the room height.

I also came up with the idea of extending the roof.
However, this would result in a knee wall height of only 1.5 m (5 ft).

What do you think about that?