ᐅ Converting an internal terrace into living space?

Created on: 11 Jan 2021 21:08
H
Haeuslebaur
Hello everyone,

I am new to the forum and an aspiring homeowner. The house – built in 1960 – has an interior terrace on the ground floor, as shown in the floor plan. My idea is to move the exterior walls to the actual edge of the house. You can think of the terrace as a room without walls, with the roof above it. The house is basemented, but not the part where the terrace is located. At the corner of the terrace, there is a metal support column.

What do you think of this plan? I am aware that I need to involve a structural engineer and an architect. I just wanted to ask whether you think such a renovation is realistic and roughly what it might cost. Currently, the two exterior walls have large windows covering about 70%, which I would like to replicate and reuse.

Looking forward to your answers.
Best regards,
Paul

Grundriss eines Apartments: WOHNEN, ESSEN, KOCHEN, BAD, FLUR und SCHLAFEN, Treppenhaus
S
sascha-t4-le
12 Jan 2021 16:42
It needs to be clarified whether the steel column requires fire protection cladding.
11ant12 Jan 2021 16:43
Haeuslebaur schrieb:

Regarding the foundation slab: Would that be a positive aspect, meaning a new foundation slab would not need to be installed?
I assume that the patio has a foundation slab that continues into the basement ceiling (although a step is shown in front of the balcony door); and that this leads to outdoor temperatures being conducted into the basement ceiling, which is the ground floor floor. Therefore, closing off this open space would already be a beneficial measure. Do you only have the small plan snippet shown here, have not yet reviewed the building files, and are unable to provide us with further details about the house?
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H
Haeuslebaur
12 Jan 2021 17:27
11ant schrieb:

I assume that the outdoor seating area has a concrete slab foundation, which continues into the basement ceiling (although there is a step shown in front of the balcony door); and that this causes outdoor air to enter through the basement ceiling = the ground floor floor structure. Therefore, enclosing this open space would already be a beneficial measure. Do you only have the snippet of the plan shown here, haven't reviewed the building file yet, and can’t provide us with any additional information about the house?


I have floor plans and cross-sections of the house, which I will attach here, as well as a photo. The house was built in 1960 – about 10 years ago the roof was redone and insulated, the windows were replaced, and the electrical system and plumbing were also updated. Additionally, the bathrooms and floors were renovated between 2005 and 2010. The oil heating system dates from 1996 and will likely be replaced by a wood pellet heating system.

Thank you very much again for your expert opinion!


Floor plan of a house with storage room, laundry room, basement, and stairs.

Two-story bright house with dormer windows, entrance steps, and garden.

Section A-B through a multi-story house with stairs, basement, ground floor, and attic.

Architectural drawing of a two-story house with attic, windows, and door on the left.
11ant12 Jan 2021 18:01
Haeuslebaur schrieb:

I have the floor plans and cross-sections of the house, which I’ll attach here, along with a photo. [...] Thanks again so much for your expert opinion!

I don’t see any signs of standard repairs having been done on the exterior walls yet, so that’s probably still an open issue for you. By the way, I’m quite sensitive about the term “expert” – it’s often used, politely speaking, for professionals who are considered second choice and therefore have the time when the talk show producers call ;-)
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