Zaandam · Amsterdam · Haarlem · North Holland

One contractor for your renovation, from strip-out to finish

We take a renovation from start to end: stripping out, taking out load-bearing walls and putting in steel beams, new openings, extensions and dormers, then plastering, floors, kitchen and bathroom. One contractor, one planning, and a detailed offer before anything starts.

★★★★★ 4.7 on Google, 99 reviews

  • 2021working in the Netherlands since
  • 322projects in 2025
  • 4.7 on Google, 99 reviews
  • Freeconsultation, no obligation

Before and after

Walls out, rooms joined, space added

Drag the line to compare. Three homes where we changed the structure, photographed before the work started and once it was done.

Before: a wall with an arched opening between the dining room and the kitchenAfter: the wall is gone and the kitchen island stands in the open roomBeforeAfter
Aalsmeer: the wall came out, kitchen and living room became one
Before: a small annex behind the house in HaarlemAfter: a brick extension with glass sliding doors to the gardenBeforeAfter
Haarlem: the old annex made way for an extension
Before: an empty room with a high ceilingAfter: a mezzanine with a balustrade above the living spaceBeforeAfter
Hilversum: a mezzanine built into a high room
A new steel beam under the ceiling, held up by temporary props
Abcoude: a new steel beam on temporary props

Why people choose us

What you can count on

  • One contractor from strip-out to finish

    Builder, electrician, plumber, plasterer and finisher in one planning. You do not have to find and schedule them yourself.

  • Structural work done in the right order

    Temporary props first, then the steel to the calculation, then fire-resistant boarding, plaster and paint around it.

  • A detailed offer, no surprises

    The offer lists the work and the materials. If extra work comes up, you hear about it before we do it.

  • A clean, locked house every day

    We clean up before we leave. Doors are locked, lights off and the water shut off at the end of each day.

What clients say

Rated 4.7 on Google

★★★★★4.7 out of 5 · 99 reviews

★★★★★
“Thank you very much for all te hard work and good worksmanship! If we have any renovation plans in the future, we will definitely think of you. The guys all were truly professional and respectful, our compliments!”
Korian R. · Google review, September 2026
★★★★★
“not the cheapest, but definitely the best! vasiliy has done an amazing job with our bathroom. he worked fast yet very thorough, and cleaned the workspace every day. also the communication and service with vasyl and the team was very good. totally recommend!”
Wendel T. · Google review, June 2026
Read all 99 reviews on Google

How it works

From first message to a clear offer

Every house is different. Once we have seen it and measured on site, you get a price for your project, not an estimate.

Book a free consultation
  1. 01

    You send your details

    The form, or a call. A few lines and a photo of what you want changed are enough to start.

  2. 02

    We come and look

    We contact you to arrange a visit. We look at the walls, floors and structure, and measure.

  3. 03

    You get a transparent offer

    A detailed offer with the work, the materials and the expected duration, so you know what you are agreeing to before anything starts.

On site

The work behind the finish

A bolted connection between two steel beams under a timber floor
Steel beams bolted together
Temporary steel props under a timber beam in a stripped room
Temporary props before the steel goes in
A black spiral stair leading up to a mezzanine
Spiral stair to the mezzanine
A timber frame for a mezzanine in a high room
The frame of a mezzanine
A stripped room with a timber ceiling and a beam across the wall
Stripped back to the structure
A small room stripped back to bare brick
Strip-out down to the brick

Questions

Before you start

Do you take on a whole renovation or one part of it?

Both. From one new opening in a wall to a full house with an extension. When it is the whole project, one contractor plans all the trades.

Who makes the structural calculation and who arranges the permit?

The steel for a load-bearing wall follows a calculation by the Dutch structural engineer we work with. Permits and informing the municipality or the owners' association (VvE), where needed, are your responsibility. We can tell you what the work involves, so you can check the rules.

How long does a renovation take?

It depends on the size of the house and the structural changes. On average an apartment of 70 m² takes 5 to 12 weeks and a two-storey house of 150 m² 6 to 15 weeks. The planning can change once the strip-out is done.

Who buys the materials?

The construction materials come from us and are in the offer. Visible and decorative materials, such as tiles and fittings, you choose and buy yourself; the offer says what and how much.

Do you work from my own design?

Yes. We check that your design works in practice and with local rules. We can suggest designers in the Amsterdam area; the choice stays yours.

Do I get a warranty?

Yes, a one-year warranty on our work. We are insured against damage, and our people hold VCA safety certificates.

Where do you work?

We are based in Zaandam and work in Amsterdam, Haarlem, Alkmaar and the rest of North Holland, and further afield in the Netherlands.

Book a free consultation

Tell us about your plans and we get back to you quickly. No obligation.

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