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Structural engineer in Zandvoort

Adding a storey above an existing extension in Zandvoort or Bentveld requires a clear description of both building parts. Find records for the house and the extension. For older properties, the house number recorded in the archive may differ from today’s number.

Your building project

Planning changes to a property in Zandvoort?

Request structural calculations for your project. Choose the work you are planning or tell us what you want to change.

What you can send us

  • The address of your project.
  • A short description of your plans.
  • Any drawings and photos you already have.

No drawings yet? You can still get in touch. We will discuss the information needed for your calculations.

Prepare your local project

Zandvoort: find the correct address and building phase

  1. Check the historic address

    The official search guide explains that permits are recorded under the address used when the application was made. Street names and house numbers may have changed later.

    Practical step: No results for today’s address? Note known former numbers or street names and compare them with the title and location of the file you find.

    Official source · Bouwdossiers Zandvoort — zoekhulp
  2. Separate records before and after 2015

    Building records from 1895 through 2015 are available online. Zandvoort refers enquiries about later records to Omgevingsdienst IJmond.

    Practical step: List the original house and any later extension separately. A recent extension need not appear in the older online file for the house.

    Official source · Gemeente Zandvoort — bouwtekeningen
  3. Look specifically for foundation records

    The municipality lists foundation drawings, structural calculations and pile plans among possible records. Availability varies by address.

    Practical step: Identify documents you actually have and those still missing. A missing pile plan does not establish that there are no piles; do not infer the foundation type from that absence.

    Official source · Gemeente Zandvoort — bouwtekeningen

Municipal information checked on 31 October 2026. The practical steps are our preparation suggestions. Archive records and maps do not automatically describe the current condition of your building.

The local housing profile

For Zandvoort, Statistics Netherlands (CBS) records 17,374 residents and 9,882 homes on 1 January 2025. Single-family homes make up 47% of the stock; dwellings in multi-unit buildings account for 53%. This distinction helps when preparing an alteration: work on an entire house raises different questions from work within a shared building. Describe which walls, floors or roofs you wish to alter.

Within Noord-Holland, 0.6% of residents live in the municipality of Zandvoort. The settlement classification dated 1 January 2026 lists 2 settlements here. These are Bentveld, Zandvoort. The population and housing figures on this page cover the entire municipality, including these settlements.

Zandvoort — municipal figures
CharacteristicNumber or shareReference date or period
Population of the entire municipality17,3741 January 2025
Homes9,8821 January 2025
Single-family homes47%1 January 2025
Dwellings in multi-unit buildings53%1 January 2025
Homes more than ten years old95%1 January 2025
Newly built homes added02025
All renovationsNot available in these sourcesNo estimate

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

Prepare an additional storey above an existing extension

Describe what is proposed above the extension and how it connects to the house. Include extension drawings even if it was built much later. The existing wall, roof and supporting structure need to be considered as a connected enquiry; a coastal location does not establish the foundation type.

  • Sketch of the additional storey and its connection to the house.
  • File numbers and drawings for both the house and existing extension.
  • List of available foundation records, explicitly identifying missing information.

Calculation for your project

Discuss my building plans

Zandvoort compared with the province of Noord-Holland

With 17,374 residents, Zandvoort ranks 35 among the 44 municipalities in Noord-Holland, from largest to smallest population. The municipality accounts for 0.7% of the province’s housing stock and 1.2% of its land area. This shows the relationship between the number of homes and the area within this municipality.

Calculated population density in Zandvoort is 542 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.

CharacteristicMunicipality of ZandvoortProvince of Noord-Holland
Population17,3742,992,016
Housing stock9,8821,420,068
Land area (km²)32.082,662.54
Calculated residents per km² of land5421,124

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 Zandvoort, map unit Zd20A covers the largest measured area of soil polygons in this analysis: 1,460 hectares, or 49.4% of the mapped area.

Original Dutch source name:

Kalkhoudende duinvaaggronden; fijn zand

Soil map 2025 — intersection with the area boundary
Map codeDutch soil classification: first unitArea (ha)Share of mapped area
Zd20AKalkhoudende duinvaaggronden; fijn zand1,46049.4%
Zn50A/Zd20AKalkhoudende vlakvaaggronden; matig fijn zand1,01034.2%
EZ50A/Zd20AKalkhoudende enkeerdgronden; matig fijn zand31210.5%
Zn30AKalkhoudende vlakvaaggronden; grof zand963.2%
Zn21Vlakvaaggronden; leemarm en zwak lemig fijn zand331.1%
Other unitsOther mapped soil polygons471.6%

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 Zandvoort. 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.

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.

ServiceStart with this informationFurther explanation
Remove load-bearing wallFloor plans of all floors; Desired width and position of the openingView the structural calculation service
New extensionDrawings of the existing and new situation; Dimensions and desired materialsView the structural calculation service
Additional rooftop storeyExisting structural and foundation drawings; preliminary design of the additional storeyView the structural calculation service
FoundationsLoads and design of the superstructure; Available soundings or soil reportsView the structural calculation service
Steel beamClear span and total available length; Load from floors, roof and wallsView the structural calculation service
DormerRoof cross-section and existing beam dimensions; Dimensions and position of the dormer windowView the structural calculation service
Roof terraceDrawings of the existing roof; Desired layout and floor structureView the structural calculation service
Solar PV panelsLaying plan and ballast plan from the installer; Weights of panels and mounting systemView the structural calculation service
Stair openingFloor structure and bearing direction; Position and dimensions of the openingView the structural calculation service
House and new constructionArchitectural design; Available soil surveyView the structural calculation service
Extension of an existing roomExisting and desired floor plan; Sections and dimensionsView the structural calculation service
BalconyExisting facade and floor drawings; Balcony dimensions and choice of materialsView the structural calculation service
Bay extensionFacade drawings and section; Dimensions and frame layoutView the structural calculation service
CanopySizes and position; Roof covering and roof slopeView the structural calculation service
CarportDimensions and clear passage; roof build-upView the structural calculation service
GarageFloor plan and doors; roof and floor build-upView the structural calculation service
ShedDimensions and construction method; Intended use and storageView the structural calculation service
Flat roofBeam or slab details; roof build-upView the structural calculation service
Remove chimneyCross-section of the chimney flue; Desired removal per floorView the structural calculation service
Timber floor joistsBeam sizes and center-to-center distances; Spans and supportsView the structural calculation service
LintelOpening and dimensions; Wall and facade constructionView the structural calculation service
Steel trussGeometry and supports; roof and facade weightsView the structural calculation service
Roof ridge raisingExisting roof cross-section; Desired ridge and gutter heightsView the structural calculation service
Floor and floor reinforcementType and construction of the floor; Drawings and existing reinforcement where knownView the structural calculation service
Additional storey above an extensionExisting extension drawings and calculations; Foundation dataView the structural calculation service
Sliding doors and facade openingFacade view and section; Desired openingView the structural calculation service
Multiple interventions in one projectOverview of all proposed interventions; Coordinated design drawingsView the structural calculation service

Submit your building plans

For a project in Zandvoort, start with the building address and proposed alteration. For work in an apartment: which storey is involved, which floors bear on the wall and which building drawings are available?

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What are your construction plans?

Tell us what you want to change. Then we look at what calculation is needed.

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