120 m² of living space: the golden mean for families
Short answer: A prefabricated house with around 120 m² offers room for four to five rooms — the classic for families with two children. Currently you will find 29 houses with us between 111 and 130 m², the cheapest from €202,696 catalogue starting price. These manufacturer prices apply "ex works" for the respective construction stage — the plot and incidental construction costs come on top.
Why do so many families build in exactly this size? Because 120 m² hits the golden mean: generous enough for an open-plan living-dining area and three separate bedrooms, compact enough to keep construction, heating and maintenance costs in check. The floor plan can be organised in the classic two-storey way — with the living area downstairs and the sleeping area upstairs — and still be flexibly adapted to your own family.
How a 120 m² family home is typically divided up
| Area | How it works at 120 m² | Planning tip |
|---|---|---|
| Ground floor | Open-plan living-kitchen-dining area, guest WC, utility room | Direct terrace access, utility room by the kitchen |
| Upper floor | 3 bedrooms + family bathroom | Children's rooms from ~12 m², check the master bathroom |
| Staircase & hallway | Minimise circulation space | A central staircase keeps distances short |
| Optional study | On the ground floor as a guest/work room | Flexibly usable, provide the connections |
The house prices on this page are the providers' catalogue "from" prices. You can determine your realistic total sum including the plot and incidental construction costs in the real construction cost calculator — including a budget stress test.
Floor-plan tips: how to get the best out of 120 m²
A successful 120 m² floor plan thrives on clear zoning. On the ground floor, cooking, dining and living merge into one open zone with direct terrace access — plus a guest WC and ideally a utility room next to the kitchen. On the upper floor lie three bedrooms and the family bathroom, quietly separated from the daily hustle and bustle below. Keep hallways short and place the staircase centrally: every saved square metre of circulation space becomes genuine living space.
Do not plan children's rooms too tightly — around 12 m² allows for a bed, desk and wardrobe, even as the children grow older. Anyone who regularly works from a home office should check whether a study on the ground floor still fits into 120 m² or whether the next larger class makes more sense. Our guide on house building costs provides more basics.
29 prefabricated houses around 120 m² with prices
The selection comes from our curated database, sorted by catalogue "from" price ascending (houses without a price at the end). Images and details come from the manufacturers.
Checklist: planning a 120 m² family home correctly
These points turn 120 square metres into an everyday-friendly family home:
- Zone clearly: living area used during the day downstairs, quiet sleeping area upstairs.
- Do not plan children's rooms too small — around 12 m² creates room for a bed, desk and wardrobe.
- A guest WC on the ground floor and a family bathroom upstairs are considered standard at 120 m².
- A utility room directly next to the kitchen saves many trips in daily family life.
- Plan storage generously: fitted wardrobes, a pantry and a cloakroom prevent chaos.
- Set the staircase position early — it decisively determines how efficiently the floor area works out.
- Keep the catalogue 'from' price and total costs separate: calculate the plot and incidental construction costs separately.
Plan smaller or larger? Living spaces compared
Are fewer square metres enough for you because you are building as a couple or with one child? Then take a look at the prefabricated house with 100 m². If you need more room for a home office and guests, the way leads to the prefabricated house with 140 m². Anyone searching by price range will find what they are looking for in the prefabricated houses by budget. For the classic family build, a look at the detached house is also worthwhile.
Compare quotes for your 120 m² family home
Answer a few short questions about your desired size, number of rooms and region – we match you with vetted manufacturers and send you suitable quotes for a family home free of charge. Free and without obligation.
