House with granny flat: Discover floor plans

• A granny flat is an additional flat of secondary importance (and therefore less space) in a home.
• A separate front door is not mandatory, but a lockable flat door is essential.
• A granny flat has its own sanitary facilities as well as cooking and sleeping facilities.

You may find an alternative to our granny flat floor plans here:

• Single-family house floor plans
• Multi-family house floor plans
• Bungalow house floor plans
• Semi-detached house floor plans
• Hausgrundrisse

While the floor plan of a house with a granny flat is no different from the planning of a detached house in many respects, there are a few points that you should definitely bear in mind. One of these is the decision as to how the granny flat should be integrated into the house. A number of factors must be taken into account here, which are often mutually dependent:

Planning a floor plan with a granny flat in the basement or on the ground floor

• If the house is to be built on a slope, it usually makes sense to plan the granny flat in the basement of the floor plan, as a basement has to be built anyway and it can be supplied with daylight from three directions due to the slope. 
• If a house is planned on a flat plot with a basement, the question arises as to how to get enough sunlight into the granny flat in the basement. For example, the ground in front of a wall can be dug away to create a kind of terrace. The resulting large window areas provide daylight.
• Does the floor area specified in the development plan even allow for a granny flat on the ground floor or will the built-up area then be too large?
• If the house has to be planned without a basement for other reasons, the question becomes superfluous.

The type of cohabitation should be taken into account in the floor plan

• How much do you want to see of the other party's life?
• Should there be a shared entrance or separate entrances?
• Can the garden be shared or would it make more sense to separate the rooms?
• Are there any problems if some rooms such as utility, storage or laundry rooms are to be shared?

There are a few facts to consider here

• Do you want to rent out the granny flat or use it yourself (e.g. as an office)?
• Who do you want to let the granny flat to? If the grandparents are to move in with you, you can plan the cohabitation differently than if the granny flat is intended for a carer or is simply rented out as an additional source of income to a permanent tenant or to holiday guests.
• Will the type of use change over the years? For example, initially as a rental and later for grandparents?
• If you are thinking of selling the property again, you should consider whether your floor plan is suitable for the largest possible target group or whether it is very specifically tailored to a small number of possible uses.