This is what the public sources we read say; each figure names its source. The VAT basis differs per source, see the table.
| Width | Lowest – highest |
|---|---|
| 3 m wide | € 7,000 – € 9,800per dormer |
| 6 m wide | € 9,400 – € 12,300per dormer |
Lowest and highest figure in the guides we read. This is not an average and not an offer.
Each row is one source: the lowest and highest figure that source gives for the item, with its date and a link. Sources that disagree stay in separate rows; nothing is averaged. The VAT basis is shown as the source gives it.
| Item, source and date | Price | VAT basis |
|---|---|---|
| Covers: Prefab dormer, Traditional dormer S01 · slimster.nl · Price guide on a company website · 2025-07-25 Includes: installation Not included, or not always: crane or scaffold, waste removal, options | from € 8,500 – from € 12,000per dormer | incl. VAT (stated for the page, not for this table) |
| Covers: Plastic (PVC) dormer S02 · homedeal.nl · Price guide on a company website · 2026-01-21 Includes: installation | € 7,000 – € 9,800per dormer | VAT basis not stated |
| Covers: Prefab dormer, Custom-made dormer (maatwerk) S03 · trustoo.nl · Price guide on a company website · 2026-08-13 Includes: installation Not included, or not always: interior finishing, roof covering, roller shutters, sun screens, extra insulation (higher Rc value), permit, removal of the old dormer, crane or scaffold | € 7,000 – € 18,000per dormer | incl. VAT (stated only for the headline range of the page) |
The prices on this page come from the sources above, not from AstraNL's own estimator. On the next page: A preliminary estimate from text, photos or video, reviewed before release. This experimental entrance prepares preliminary estimates, not binding offers. Submitting this request charges nothing and engages no provider.
Describe your jobLowest and highest figure by width (prefab or plastic dormer, installed): 3 m: € 7,000 – € 9,800; 6 m: € 9,400 – € 12,300 per dormer. This is what the public sources we read say; each figure names its source. The VAT basis differs per source, see the table.
Not always. Some of the guides list crane or scaffold, waste removal and options as not included, or not always included. The table shows this per row.
Prices were read from these public pages on the date shown. The price date is the date the source gives.