Structural engineer in Haarlem

The local housing profile

Haarlem has 80,430 homes. The balance between multi-family housing (52%) and single-family homes (48%) makes the building type a useful starting point for your enquiry. Altering an apartment layout? Identify shared floors and walls. For a house extension, focus on the new space, the wall opening and their combined support. Constructieberekening247 is based at Assumburg 33, 2036 JA Haarlem.

Within Noord-Holland, 5.6% of residents live in the municipality of Haarlem. The settlement classification dated 1 January 2026 lists 2 settlements here. These are Haarlem, Spaarndam gem. Haarlem. The population and housing figures on this page cover the entire municipality, including these settlements.

CBS — population (1 January 2025) · CBS — housing stock and dwelling types (2025) · CBS — officially registered settlements (1 January 2026)

Haarlem compared with the province of Noord-Holland

With 168,743 residents, Haarlem ranks 2 among the 44 municipalities in Noord-Holland, from largest to smallest population. The municipality accounts for 5.7% of the province’s housing stock and 1.1% of its land area. This shows the relationship between the number of homes and the area within this municipality.

Calculated population density in Haarlem is 5,777 residents per km² of land, compared with 1,124 for the province of Noord-Holland. This is an area comparison, not a measure of access to your building site. Describe access, available working space and adjoining buildings in your enquiry.

Reference date: 1 January 2025. Provincial totals are summed from municipal data; densities and shares are calculated from these totals. Rounded areas can produce small differences from directly published densities.

Soil and ground types

Within the boundaries of Haarlem, map unit opVc covers the largest measured area of soil polygons in this analysis: 158 hectares, or 26.1% of the mapped area.

Original Dutch source name:

Weideveengronden op zeggeveen, rietzeggeveen of (mesotroof) broekveen

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 Haarlem. 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.

See the available building figures and what they mean

Towns and villages within this municipality

The names below are officially registered BAG settlements from the 2026 CBS classification. One settlement may contain several neighbourhoods. The municipal figures above are not separate population counts for these villages.

• Haarlem · Prepare your calculation enquiry
• Spaarndam gem. Haarlem · Prepare your calculation enquiry

Structural calculations for your project

Choose the alteration that matches your project. The linked service page describes the information needed, possible deliverables and points to consider. Site surveys, timing and costs are agreed for each commission.