Garage & Double Garage: Dimensions, Sizes, Costs 2026
How big must a garage be so that doors open and storage space remains? This guide provides dimension tables for single, double and large garages. It explains the general parking regulations and quantifies the costs for 2026 as ranges. That way you plan the right garage size.
How big does a garage need to be so that the doors open comfortably and there is still room for shelves along the wall? And what dimensions does a double garage need for two cars side by side? This guide provides practical dimension tables for single, double and oversized garages, explains the general parking-space regulations and puts figures on the 2026 costs as ranges.
Short answer: A comfortable single garage measures roughly 3.0 × 6.0 m on the inside, while a double garage comes in at around 6.0 × 6.0 m for two vehicles parked side by side. State building codes (Landesbauordnungen) often set a minimum of 2.5 × 5.0 m per parking space — but that is very tight. As a rule of thumb, prefabricated garages cost roughly 6,000 to 20,000 € in 2026, depending on size, material and fit-out.
What are the dimensions of a single garage?
Short answer: A single garage should be at least 3.0 m wide and 6.0 m long on the inside so that the car doors can open comfortably and there is still storage space in front of or behind the vehicle. Narrower dimensions from 2.5 × 5.0 m are often legally permitted, but getting in and out then becomes awkward. For large SUVs or vans, a width of 3.2 m and a length of 6.5 m are worthwhile.
Garage dimensions at a glance (internal measurements, guide values)
| Garage type | Width | Length | Suitable for |
|---|---|---|---|
| Minimum parking space | 2,5 m | 5,0 m | compact cars, very tight |
| Single garage, comfortable | 3,0 m | 6,0 m | mid-size car + storage |
| Single garage, large | 3,2 m | 6,5 m | SUV, van, trailer in front |
| Double garage | 6,0 m | 6,0 m | two cars side by side |
| Double garage, comfortable | 6,5 m | 6,5 m | two SUVs + moving room |
| Oversized garage / underground box | 3,5 m | 8,0 m | motorhome, workshop use |
If a covered parking space is enough for you instead of an enclosed garage, it pays to compare the costs — the differences are explained in our guide prefabricated garage & carport.
How big is a double garage?
Short answer: A double garage for two cars parked side by side typically measures around 6.0 × 6.0 m on the inside. A more comfortable 6.5 × 6.5 m lets both car doors open and leaves room to walk through in the middle. If you regularly park larger vehicles, you should increase the width to as much as 7.0 m. The clear door opening on double garages is usually between 4.5 and 5.0 m wide.
A double garage affects both the plot layout and the development plan (Bebauungsplan). Our guide reading the development plan shows how to work out the permitted placement of ancillary structures. A particularly popular combination is the bungalow with a double garage, because both can be accessed at ground level.
Plan the garage right from the start
A garage is cheapest to build together with the house. Request quotes free of charge and without obligation that already factor in a garage or carport.
Which regulations apply to garages and parking spaces?
Short answer: Garages and parking spaces are governed by the state building codes (Landesbauordnungen) and garage ordinances (Garagenverordnungen) of the federal states as well as the local development plan (Bebauungsplan). These regulate, among other things, the minimum dimensions per parking space, boundary setbacks, the permitted length of garages built on the boundary, fire safety and the number of parking spaces to be provided. Because the requirements differ from state to state and municipality to municipality, a local check is always decisive.
- Check the development plan for building lines, parking obligations and garage locations.
- Consult the state garage ordinance for boundary setbacks and dimensions.
- Observe the permitted length of garages built directly on the plot boundary.
- Coordinate the required number of parking spaces with the municipality.
- Plan a realistic access width and turning space.
Don't underestimate boundary construction
Whether a garage may be built directly on the plot boundary depends on the respective state building code and the development plan. Garages on the boundary are often only permitted up to a certain wall height and overall length. Clarify this before ordering to avoid expensive demolition.
What does a garage cost in 2026?
Short answer: As a guide value, prefabricated garages cost roughly 6,000 to 12,000 € for a single garage and around 12,000 to 20,000 € for a double garage in 2026, depending on size and material. Masonry garages are often more expensive. On top of this come the foundation, delivery, earthworks and the connection of electricity or water. A simple carport is considerably cheaper than an enclosed garage.
Cost framework for garages and carports (as of 2026, guide values)
| Variant | Cost range | Note |
|---|---|---|
| Carport (single) | 2.000–6.000 € | open, cheapest solution |
| Prefabricated single garage | 6.000–12.000 € | depending on material/fit-out |
| Prefabricated double garage | 12.000–20.000 € | two parking spaces |
| Masonry garage | ab 15.000 € | individual, greater effort |
Foundation and earthworks are often underestimated. Factor these items in — the cost calculator helps with the overall overview of the building project.
What should I bear in mind when planning a garage?
Short answer: Plan a little larger rather than too tight: storage space for tyres, bicycles and garden tools saves you a separate shed later. Think about electricity for an EV wallbox and lighting, a sufficiently wide access drive and the door opening. If you want to retrofit a wallbox, lay the conduits during construction — that saves you expensive chiselling later.
Our guide prefabricated garage & carport shows how outdoor facilities and parking spaces fit into the overall costs. You will find suitable houses with a pre-planned garage in the house catalogues section.
Conclusion: better to build one size larger
The statutory minimum dimensions are enough for parking, but not for comfortable use. Anyone who plans a single garage of 3.0 × 6.0 m or a double garage of 6.0 × 6.0 m and allows for storage space gains everyday comfort. Be sure to check the development plan and garage ordinance before you order. The consumer advice centre Verbraucherzentrale offers consumer information on ancillary structures.
Cost out the house together with the garage
Have quotes drawn up in which a garage or carport is already planned in, and compare the overall costs — free of charge and without obligation.
What does your dream house really cost?
Request suitable quotes from vetted manufacturers for free and compare the prices per square metre for your construction project.
Compare house prices nowImportant questions briefly explained
The most common price questions around Garage & Double Garage – answered concisely by the Prefabricated House editorial team (as of 2026).
