Frequently asked questions

A 10 m² extension starts at € 37,510 incl. VAT; 25 m² from € 57,375 (€ 2,295 per m²). Your exact price — including façade, window frames and options — appears instantly in the online configurator.

Many extensions at the rear of the home can be built permit-free, depending on the dimensions and your situation. We review it together with your quote and advise you on the rules in your municipality.

Once you approve, we build your extension in our workshop. Installation at your home takes five days: breakthrough, groundwork, crane placement and the interior and exterior finishing.

Yes — every extension is custom-built. In the configurator you choose any depth up to 5 metres and any width up to 15 metres, in steps of 10 centimetres, and the price updates live.

Yes. Our extensions are fully insulated and, if you wish, fitted with underfloor heating or radiators — a full living space, all year round.

The price depends on the width, the finish and your roof. Request a quote and you'll quickly receive a tailored price — fixed and with no surprises.

A dormer at the rear of the house is often permit-free; at the front a permit is usually required. We'll advise you on this with your quote.

Because the dormer comes prefabricated from our workshop, the work on the roof stays short: installation and finishing are often done within one to two days.

Yes — we match the colours, frames and finish to your home, so the dormer looks as if it was always there.

Every roof addition is made to measure: the price depends on the dimensions, structure and finish. Request a quote and you'll quickly receive a fixed, tailored price.

A roof addition almost always requires a planning permit. We know the process and help you with the application, including drawings and structural calculations.

We check this in advance with a structural assessment of your foundation and load-bearing walls. That way you know exactly where you stand before you decide.

The roof is opened, the prefab roof addition is craned into place and then we finish everything off. Expect a few days of disruption instead of months of scaffolding.

The price depends on the model, the finish and the installation. Request a quote and you'll quickly receive a tailored, fixed price with no surprises.

An in-ground pool is subject to municipal rules; a permit or notification is often required. We advise you on this when we prepare your quote.

The polyester shell comes out of the mould in one piece and is craned into the prepared excavation. That makes installation fast and clean.

Polyester is smooth and low-maintenance: algae get little grip and the surface is easy to keep clean.