ᐅ Single-Family Home Construction: Planning a Granny Flat / Accessory Dwelling Unit for Future Family Expansion?

Created on: 29 Aug 2021 16:35
M
marvel-online
I have a general question in the hope that you either completely dismantle the idea or that it might be workable. It’s more of a rough idea than a concrete plan:

We (a couple planning to have children but currently without any) would like to build a single-family house on a relatively large plot of land (1000sqm (10,764 sq ft)). Since we plan to have two children in the future, we would like to design two children's bedrooms accordingly. A home office and possibly a guest room would also be nice to have. A friend who is an architect suggested incorporating a separate apartment within the single-family house.

So we came up with the idea to possibly plan the house with the master bedroom, bathroom, home office, and guest room on the first floor, and to place a separate apartment in the basement with two rooms, a small kitchen, and a bathroom, which could also be rented out. If there is a later need for two children's bedrooms, the separate apartment could be used as the home office and guest room, and the freed-up rooms on the first floor could be used as children’s bedrooms. In the more distant future, the separate apartment could potentially be used again as a separate living unit for teenage/adult children or as an accessible living space for aging occupants.

This way, there would be no unused rooms in the new build, no risk of the house being too small in the long term, and as a side benefit, there might be additional subsidies and, of course, rental income.

Completely crazy idea or possibly reasonable?
M
marvel-online
29 Aug 2021 18:07
Hangman schrieb:

What exactly do you mean by souterrain? Are we talking about a hillside property with a walk-out basement?

Exactly. Ground floor level on the north side, basement level on the south side.
Hangman29 Aug 2021 18:19
OK, and from where is the access road or driveway coming?
M
marvel-online
29 Aug 2021 18:21
Hangman schrieb:

OK, and from where is the access route?
Also from the north side. Here, part of the front yard could be separated as a garden for the granny flat. Entrance to the main house is also from the north, via an external staircase to the ground floor.
Hangman29 Aug 2021 18:35
I don’t understand: the possible granny flat is in the basement, but its garden is on the north side (which means one level higher on the hillside)? And why do you need stairs to the ground floor if the granny flat is recessed into the hillside? And how do you then get to the main garden (which would be on the south side, one level lower on the valley side)? Is there a site plan with elevation levels?
M
Myrna_Loy
29 Aug 2021 18:35
A shady basement apartment… imagine who would want to rent that and ask yourself if you would want such a person as a neighbor on your property?
M
marvel-online
29 Aug 2021 18:38
Hangman schrieb:

I don’t understand: the possible granny flat is in the basement, but its garden is on the north side (meaning one floor higher on the slope side)? And why do you need stairs to the ground floor if the granny flat is embedded into the slope? And how do you access the main garden then (which would be one floor lower on the south, valley side)? Is there a site plan showing elevation levels?
The street runs from east to west on the north side. The slope rises to the south. Therefore, the granny flat’s garden is at street level on the north, while the main house’s garden is one story higher on the south side.