Assess an alteration within the whole building
A larger living room, rooftop extension or additional opening in Zuid-Holland requires structural substantiation that fits the existing building. Where one building contains several dwellings, establish which elements are affected and who decides on them. Municipality profiles show local housing characteristics and officially registered settlements. Use the linked building guides to prepare your question, and agree the scope of calculations, drawings and any site survey in advance.
| Characteristic | Number | Reference date or period |
|---|---|---|
| Provincial population | 3,863,397 | 1 January 2025 |
| Municipalities | 50 | 2026 classification |
| Officially registered settlements | 185 | 1 January 2026 |
| Homes | 1,773,458 | 1 January 2025 |
| Newly built homes added | 12,911 | 2025 |
| All renovations | Not available in these sources | No estimate |
CBS — population (1 January 2025) · CBS — housing stock and dwelling types (2025) · CBS — officially registered settlements (1 January 2026)
Soil and ground types
Within the boundaries of Zuid-Holland, map unit Mn25A covers the largest measured area of soil polygons in this analysis: 21,563 hectares, or 10.1% of the mapped area.
Original Dutch source name:
Kalkrijke poldervaaggronden; zware zavel, profielverloop 5
| Map code | Dutch soil classification: first unit | Area (ha) | Share of mapped area |
|---|---|---|---|
| Mn25A | Kalkrijke poldervaaggronden; zware zavel, profielverloop 5 | 21,563 | 10.1% |
| Mn35A | Kalkrijke poldervaaggronden; lichte klei, profielverloop 5 | 17,494 | 8.2% |
| Mn15A | Kalkrijke poldervaaggronden; lichte zavel, profielverloop 5 | 13,607 | 6.4% |
| hVb | Koopveengronden op bosveen (of eutroof broekveen) | 11,463 | 5.4% |
| pVb | Weideveengronden op bosveen (of eutroof broekveen) | 10,240 | 4.8% |
| Other units | Other mapped soil polygons | 138,951 | 65.1% |
The shares are calculated within the soil polygons on the map, not across all land or all building addresses. For compound map codes, the name of the first unit is shown. The map describes shallow soil; built-up areas are not fully mapped. It does not establish bearing capacity or determine whether piles, pad footings or strip foundations should be used.
Explore subsurface data in BROloket · How the soil map can be used · Method and sources for these area profiles
Read about foundation investigations · Pad footing, pile or strip foundation?
How much renovation takes place?
The CBS tables used here do not provide a complete local renovation count for Zuid-Holland. We therefore do not estimate this from population, new homes or a national percentage. These sources also do not establish which type of renovation is most common.