De 7 Provinciën

About us

De 7 Provinciën

One contact person from start to finish, 
No unpleasant surprises due to thorough preparations,
Clear communication,
Description of work activities and set prices.

Large or small conversions to your home or office space, there’s nothing we can’t handle. We apply beautiful, functional designs to interiors and exteriors.

We listen well to your wishes, are aware of the latest laws and regulations, and create and realize the design together with you.

Next, we take on the complete construction of the design. We build and guarantee top quality and customization. Of course, the finish is always of high quality.
Besides building and remodeling, we can also offer maintenance and repairs to existing buildings and constructions.


Owner Klaas Timmer

“I am Klaas Timmer, owner and founder of De 7 Provinciën. With an education as civil engineer and broad experience in bridge construction, I laid the basis for ‘solid construction’. With additional creative training, I could start offering the combination of design and realization. That is how De 7 Provinciën was founded in 1995.

I really enjoy building with glass and steel. The space and light in my designs use all the available space. I love the perfection of high-quality custom work.”





Besides Klaas Timmer, the team of De 7 Provinciën exists of proven specialists. The architect, the design engineer during the preliminary stage, several professionals taking care of the construction; a good group of people who are all specialists in their own right.

Klaas Timmer will remain contact person and has the final responsibility.

Durable materials

We prefer durable materials: concrete, steel, natural stone, wood, and stainless steel. Sustainable construction is building with respect for the environment and health.

Good at real estate
We often act as a real estate agent for homes, lofts, apartments, and office spaces.

Due to our expertise in construction, we can judge a building on possible (hidden) flaws, maintenance, and remodeling costs.

We can take care of the whole purchasing process. We view, advise, negotiate, including the transfer at the notary. With us, you as the purchases know what to expect.

Clear agreements and no unpleasant surprises

At De 7 Provinciën you can trust us to offer clear agreements that we stick to, due to thorough preparations of the project.

You’ll receive a clear plan of the work that needs to be done and the corresponding definite prices.

We are looking forward to turning your home or work environment into an optimal, light, and modern space. You too? Then please feel free to contact us for a free meeting.