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Structural engineer in Dijk en Waard

Preparing an extension or garage in Dijk en Waard? Record the former municipality and relevant permit year alongside the present locality. Collect ground and building records for each existing part, keeping earlier extensions identifiable in the new enquiry.

Your building project

Planning changes to a property in Dijk en Waard?

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

Dijk en Waard: start with the former municipality and permit year

  1. Choose the correct transfer boundary

    Alkmaar Regional Archives holds Heerhugowaard files before 2016 and Langedijk files before 2020. From those respective years, request files from the municipality.

    Practical step: Provide former municipality, address and permit year together. List an older house and later garage or extension separately when their building phases differ.

    Official source · Gemeente Dijk en Waard — bouwdossiers
  2. Match ground records to the building part

    Dijk en Waard says building files usually contain information about piles and cone penetration tests.

    Practical step: Record the address, date and associated building part for each document received. Identify unclear connections to your extension; an older investigation does not automatically replace assessment for the new proposal.

    Official source · Gemeente Dijk en Waard — bouwdossiers
  3. Read the heritage register category

    The municipal register distinguishes monuments from a separate group of landmark or characteristic buildings, objects and ensembles.

    Practical step: Look up the exact address and record its category if listed. Ask how an unclear designation affects the design rather than inferring monument status or a permit outcome yourself.

    Official source · Gemeente Dijk en Waard — erfgoedregister

Municipal information checked on 1 November 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 Dijk en Waard, Statistics Netherlands (CBS) records 90,747 residents and 38,398 homes on 1 January 2025. Single-family homes make up 78% of the stock; dwellings in multi-unit buildings account for 22%. 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, 3.0% of residents live in the municipality of Dijk en Waard. The settlement classification dated 1 January 2026 lists 7 settlements here. These include Broek op Langedijk, Heerhugowaard, Koedijk, Noord-Scharwoude. The population and housing figures on this page cover the entire municipality, including these settlements.

Dijk en Waard — municipal figures
CharacteristicNumber or shareReference date or period
Population of the entire municipality90,7471 January 2025
Homes38,3981 January 2025
Single-family homes78%1 January 2025
Dwellings in multi-unit buildings22%1 January 2025
Homes more than ten years old87%1 January 2025
Newly built homes added3892025
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)

Describe a new extension alongside existing additions

Planning to connect a garage to the house or build beside an older extension? Draw the existing parts separately and show the proposed connection. Gather available records for each building phase. The original house’s foundation is not automatically the correct starting assumption for every later addition.

  • Sketch separately identifying the house, existing garage or extension and proposed addition.
  • Permit years and file numbers for each building phase and former municipality.
  • Available foundation and ground-test records, listing unknown connections or missing documents.

Calculation for your project

Discuss my building plans

Dijk en Waard compared with the province of Noord-Holland

With 90,747 residents, Dijk en Waard ranks 9 among the 44 municipalities in Noord-Holland, from largest to smallest population. The municipality accounts for 2.7% of the province’s housing stock and 2.3% of its land area. This shows the relationship between the number of homes and the area within this municipality.

Calculated population density in Dijk en Waard is 1,466 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 Dijk en WaardProvince of Noord-Holland
Population90,7472,992,016
Housing stock38,3981,420,068
Land area (km²)61.902,662.54
Calculated residents per km² of land1,4661,124

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 Dijk en Waard, map unit Mn15A covers the largest measured area of soil polygons in this analysis: 1,724 hectares, or 35.9% of the mapped area.

Original Dutch source name:

Kalkrijke poldervaaggronden; lichte zavel, profielverloop 5

Soil map 2025 — intersection with the area boundary
Map codeDutch soil classification: first unitArea (ha)Share of mapped area
Mn15AKalkrijke poldervaaggronden; lichte zavel, profielverloop 51,72435.9%
pMn55AKalkrijke leek-/woudeerdgronden; zavel, profielverloop 574715.6%
Mn25AKalkrijke poldervaaggronden; zware zavel, profielverloop 572415.1%
Mn56A/Mn25AKalkrijke poldervaaggronden; zavel, profielverloop 3, of 3 en 4 of 44739.8%
pMn55CKalkarme leek-/woudeerdgronden; zavel, profielverloop 52966.2%
Other unitsOther mapped soil polygons83417.4%

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 Dijk en Waard. 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 Dijk en Waard, start with the building address and proposed alteration. For alterations to a house: which walls will be removed, where must the space remain clear and how are the storeys above supported?

Discuss your project

What are your construction plans?

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

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