Basements built since 1980


5 Easy Steps to Creating a New Basement Apartment

Basement apartments are becoming a popular choice for savvy self-builders, or those carrying out extension work. And it’s no wonder; with the right structural design, a basement provides the perfect space for extra accommodation, which can be used for either guests or as a profitable money-making venture.

To make sure everything runs smoothly from the initial idea to the final product, and to help make your vision a reality, follow our five easy steps -

Step 1: The planning stage

Building a new basement apartment, just like any other construction project, all starts with a good plan. Firstly, it's essential to consider how the basement apartment will be used on a long-term basis. Is the sole purpose to create extra storage space  Or  are you considering building an office, bedroom or even a swimming pool or sauna room? Perhaps you're looking to build a complete, self-contained area to start a small business? The answer to these questions will determine the scope of the planning required, as well as any details, such as  sound insulation and heating, lighting and the overall design.

This is also the time to  consider all regulatory aspects of the project, as well as the scope and coordination of manual labour required. Compliance – such as provisions for a clear room height in accordance with the applicable state building regulations - is also something that needs to be considered early on in the planning stages. No one wants to get too far down the line, only to learn their plans can’t become a reality.

In addition, it’s important to think about high-quality insulation and proper ventilation, as well as future lighting conditions and the distribution of windows. They may seem mundane now, but these key decisions made in the planning stages are the essential part of making your basement apartment a success.

It's advisable to get professional support right from the start, and our team is happy to help!

Step 2:  Documentation

Before you can make a start on your  construction project, certain documents need to be completed.  Firstly, you’ll need a building permit. Even if you are carrying out a conversion or extension work on an existing basement, it's crucial to get official approval from the local authorities.

Each German state has its own individual building regulations that must be adhered to. We’ll also require proof of financial insurance from your bank.  

Step 3: On-site consultation

Before you can start constructing your basement, you’ll need to arrange  an on-site consultation. As part of this consultation, the project manager responsible for the build will talk you through all the details relating to your site. They will  also discuss points such as access for construction vehicles, storage options for construction materials and any requests you have regarding modifications or additional features.

Following this, they will draw up a construction plan which outlines the next steps in the procedure.

Step 4: Construction

This is the exciting part - the build can now begin! Once all the relevant prefabricated concrete parts have been manufactured, delivered and the ground has been prepared for construction, it's time to get started.

The walls and ceiling elements will be set and reinforced first, and the concrete can then be poured in. We then install our own patented AquaSafe® waterproofing system and give  you the option to carry out exterior waterproofing yourself, if this was discussed in advance during the on-site consultation. Once this is all  complete, it’s time to get creative, starting with the interior construction, painting, and wallpapering.  

Ask our team about aspects of the interior construction that can be carried out yourself to reduce the cost of the project. Get in touch!

Step 5: Acceptance

Once your basement has been built, your project manager will take you through the final acceptance process. During this, the dimensional accuracy will be tested (with the help of a checklist) and elements including ceiling height, drains and breakthroughs will all be compared to the specifications.

If the dimensions correspond to the specifications, you can sign the acceptance report. You’re now the proud owner of a  first-class basement apartment!

[Note:  Your five-year guarantee period starts from the moment you sign the acceptance report. If during this time, any unexpected issues occur, we will be there to rectify the problem in accordance with the applicable conditions, quickly and without any fuss.]


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