Get more out of your plot with an extension to your prefabricated home: prefabricated house additions from basement and carport to conservatory and wall dormer

Extensions for a prefabricated house

Prefabricated house extensions that make optimal use of the plot and maximise living space inside the house.

Many of our customers want the classic separation: living space on the ground floor and private areas with bedrooms upstairs.

If – in addition to a foyer, living room, kitchen and dining room – you would like to have a guest room or study, a guest toilet (possibly with a shower) and the technical room on the ground floor of the house, this will require a specific house size and/or sophisticated planning.

We will show you how you can get the most out of your plot with simple extensions.

Technikraum in einem Fertighaus von Hanse Haus

More space with a separate technical room

technical room

A solution for creating more living space in the house without enlarging it over two floors involves placing the utility or storage room in a single-storey extension, a vestibule or the garage.

As an example of the planning options we have considered for you, take a look at our Variant 35-154, a pitched-roof house with a garage and a detached technical room as planning options.

Still have questions? Contact us. We’ll be happy to tell you how you can create living space cost-efficiently by detaching these rooms.


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Bring nature into the house by adding a conservatory or bay window, or extend the living room outside with a covered terrace

A conservatory.
A bay window.
A terrace.

Who wouldn’t want that? Bring a bit of nature into the house?

Our Hanse Haus prefabricated houses are flexible. Many of our house suggestions make it very easy to plan an extension.

For some houses we have developed planning options that are particularly suited to them. However, there are (almost) no limits to a home’s design: adding a conservatory, bay window or terrace is almost always possible.

For example, we have planned a bay window for our Urban Villa 134 or our Cubus 148. An optional conservatory can be added on both sides of our Semi-Detached House 139, and with Semi-Detached House 131 a covered loggia upstairs protects the terrace on the ground floor from rain.

VARIANT - Einfamilienhaus mit Satteldach als Fertighaus von Hanse Haus
Prefabricated house with conservatory
With our Variant 45-145 prefabricated pitched roof house, we have enlarged the house with a conservatory on the gable side as a planning option. This creates an additional 6 square metres or so of space on the ground floor, which makes plenty of room for a cosy dining area. In the loft, the conservatory can be used as a loggia for sunbathing and relaxing.
Fertighaus mit Pultdach von Hanse Haus
Prefabricated house with bay window
In the cleverly planned energy-saving Vita 147, a two-storey bay window loosens up the house façade and expands the living space on the ground floor and a children’s room on the upper floor by two square metres each. You can visit this prefabricated house with bay window at our Show Home Park in Oberleichtersbach in northern Bavaria.
Fertighaus Bungalow von Hanse Haus
Prefabricated house with terrace
The Hanse Haus Bungalow 113, which is built as an L-shaped bungalow – around the corner, as it were – features a terrace which is sheltered from the wind. With a canopy as a planning option, it can be comfortably used from spring to autumn.
VARIANT - Einfamilienhaus mit Satteldach als Fertighaus von Hanse Haus
Variant 35-172
VARIANT - Einfamilienhaus mit Satteldach als Fertighaus von Hanse Haus
Variant 25-192
CUBUS - Fertighaus mit Flachdach von Hanse Haus
Cubus 162
CUBUS - Fertighaus mit Flachdach von Hanse Haus
Cubus 183
Fertighaus Vita 138 von Hanse Haus
Vita 138
Fertighaus Villa von Hanse Haus
Villa 183
Wall dormer &

Create contrast in the façade and plenty of bright living space with a wall dormer.

Adding a wall dormer has several advantages. Firstly, a wall dormer lets lots of light and brightness into the upper floor and expands the living space by several square metres. Secondly, a wall dormer can break up the façade visually and become a real eye-catcher.

As an example, take a look at our prefabricated Variant 35-172, for which we have planned several optional additions: a wall dormer, a covered terrace, a garage and an external storage room.


To Variant 35-172 with wall dormer

A vestibule as a practical extension

A vestibule creates additional space for a cloakroom, shoe storage, umbrellas and toys, which often accumulate in the entrance area.

For our Variant 25-192, Cubus 162, Cubus 183, Vita 138 and Villa 183, for example, we have prepared planning options with a vestibule to show you the advantages of having a vestibule as an extension.

Treat yourself and your car to the luxury of an attached carport or a garage

Carport &
garage additions

Some people say that a carport or garage is a luxury, and some even call them superfluous and expensive purchases.

We disagree because both carports and garages offer a multitude of benefits that make everyday life in your new prefabricated house easier.

The advantages of a prefabricated house with carport

  • Protect your car from sun, rain, snow and hail
  • Dry storage of firewood etc. possible
  • Dry storage for gardening and hobby equipment
  • Good air circulation thanks to its open construction
  • Additional covered entrance to the house available
  • Cheaper than a garage

With our prefabricated Bungalow 133, we will show the planning option of a carport, from which you can enter the home’s utility room directly through a side entrance – an extremely practical way to stay dry all the way into the house in snow and rain.

The advantages of a prefabricated house with garage

  • Optimal protection of your car from weather conditions such as sun, rain, hail and snow
  • Dry storage for firewood, gardening and hobby equipment
  • The installation of a separate technical room between the house and garage or behind the garage is possible
  • An additional practical side entrance from the garage into the house is possible

For our Variant 25-150, Variant 35-154 and Variant 35-172 we have already made provisions for a practical garage as a planning option. The addition of a garage is also possible with all other Hanse Haus prefabricated houses.

Experience Hanse Haus prefabricated houses with carport or garage in person

Have a look at the floor plans of our houses online or get an idea of the advantages of a carport or garage in our show homes at our Hanse Haus Show Home Park in northern Bavaria, or at one of our show homes in your area.

Whether you’d like a prefabricated home with a basement or one with a floor slab, Hanse Haus takes over the planning and building for you

Floor slab
or basement

You will also get the floor slab or the basement for your new home from a single source.

In this way, we take on the planning of the foundation and ensure flawless execution that is perfectly matched to your home’s floor plan.

Even a soil evaluation is included in Hanse Haus’s scope of services, and offers you the certainty that services can be provided adapted to the geological conditions of your plot.

For your Hanse Haus basement, you can choose between an inexpensive entry-level basement with a clear building shell height of 2.25 metres, and a basement with a clear height of 2.70 metres, which takes into account the possible planning of living space and wet rooms in the basement.

Our competent consultants will be happy to inform you about the possibilities at Hanse Haus with regard to the floor slab or a prefabricated houses with basement.

Jürgen Vogler
Jürgen Vogler
Head of construction documentation, Technical department
Our tip



“With Hanse Haus, a completely granny flat can be attached to your prefabricated house. With our prefabricated Variant 25-150 with granny flat, an additional flat is simply attached to the house as a Cubus – practical, barrier-free and eligible for state subsidies.”

Grauer Hintergrund mit Überlagerung

With our extension options, we provide you with many suggestions for practical additions. Our Hanse Haus prefabricated houses also offer additional space for extensions individually planned for you by our architect.


Do you have very special requests and ideas, or do you have to adapt your house to particular circumstances due to the shape of the plot or the location?

No problem. Whatever you’re looking for your prefabricated house, our Hanse Haus architects will find the right design for the prefabricated house that fulfils your needs and wishes.

Give your home more personality with our floor plan adaptations and planning options.


More information