Tekenpunt / Projects / Extension Alkmaar
Completed project · Extension PLAN N°PRJ-ALK-2025 / SCALE 1:100 / 2025

Extension in Alkmaar

A mid-terrace house in Alkmaar-Noord received a compact but efficient extension that transforms the ground floor into an open-plan kitchen-living area. Design, drawings and building permit handled by Tekenpunt, completed in 6 weeks.

TypeExtension
LocationAlkmaar
Surface area+14 m²
Lead timeBuilding permit 6 weeks
Year2025
ResultOpen living kitchen
§01 From sketch to completion

The complete process

01 · Challenge

Limited space, maximum gain

A young family in Alkmaar-Noord had been struggling with insufficient space on the ground floor for years. The terraced house has a typical narrow, deep floor plan from the 1970s: a small living room at the front and an impractical kitchen at the rear. An extension of 14 m² proved just enough to redesign the entire ground floor as one large open-plan kitchen-living area. The adjacent garden shed on the plot had to be relocated to make the extension possible.

02 · Our approach

Smart design within the plot boundaries

We relocated the garden shed to the side of the plot and designed a compact extension making maximum use of the available width. A large roof window in the roof plane provides adequate daylight access. The municipality of Alkmaar has a fairly flexible aesthetic policy for rear facade extensions on this type of property, which significantly accelerated the permit process. The structure is entirely in timber frame, in keeping with the existing construction.

03 · Result

Permit in 6 weeks, property fully converted

The permit was granted within 6 weeks. After the renovation, the family has a spacious open-plan kitchen-living room that opens onto the garden via sliding doors. The natural light, thanks to the roof window, is excellent even on overcast days. The contractor worked from the execution drawings delivered by Tekenpunt without any additional consultation. The project was completed within budget and on schedule.

Key project details

Drafting
Construction drawing + construction details
Permit
Building permit in 6 weeks
Structure
Timber frame + roof window detail
3D
Impression for the owner
Lead time
Permit arranged in 6 weeks

What we delivered

  • Existing and new situation drawings (floor plans, elevations, sections)
  • Complete building permit application with the municipality of Alkmaar
  • Structural calculation for timber frame and roof window connection
  • 3D visualisation for the residents
  • Placement advice for garden shed at a new location
  • Execution-ready details allowing the contractor to start immediately
§03 Building your own extension?

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Last updated: June 2026 Content reviewed by the Tekenpunt team · in-house architect & KIWA-certified structural engineer