Service · GTV Bygg AB · Gothenburg
House extensions in Gothenburg – more space, light and life for the family.
We plan, design and build extensions – from an extra bedroom to a conservatory or an added storey. We handle the building permit, structural design and construction.
The problem
This is where it often goes wrong.
Extensions often get stuck in the permit process or between architect and builder. The result: months of waiting with no clear delivery.
Our solution
This is how we solve it.
We handle the whole chain – drawings, structural engineering, permit and build – under one responsibility and one contact person.
What's included
Full responsibility – nothing falls between the cracks.
Drawings & permit
We produce the drawings and apply for the permit with the City of Gothenburg.
Foundation & frame
Piers, slab or basement depending on ground conditions.
Roof & facade
Roof, cladding, windows and doors matched to the existing house.
Interior fit-out
Floors, walls, electrical, plumbing and surfaces.
Final approval
We manage the final inspection and the municipality's final approval (slutbesked).
Process
How it works.
Feasibility
We visit the plot and review wishes and site conditions.
Sketch & quote
Sketch proposal, fixed price and schedule.
Building permit
We prepare the permit documents and handle the municipality.
Construction
Foundation, frame, roof, facade and interior.
Final approval
Final inspection, slutbesked and warranty period.
What makes the difference
Why clients choose us.
Local permit rules
We know Gothenburg's zoning plans and permit process.
Structural engineer on the team
Drawings that are actually buildable.
One contact person
Same project manager from first sketch to final approval.
Previous projects
Examples of extension work we've delivered.
Related services
More from GTV Bygg AB.
We do extension work in
Gothenburg and surroundings.
Questions & answers
Common questions about house extension.
An extension that looks like it was always part of the house.
- How long does an extension take?
- Allow 4–6 months including the permit for a standard 25–40 m² extension.
- Do I need a building permit?
- Usually yes. Some smaller extensions (the Swedish 'Attefall' rules) only need a notification – we advise on your case; verify with Boverket or the municipality.
- What does an extension cost?
- Roughly SEK 30,000–45,000 per m² turnkey in Gothenburg, depending on specification.
- Do you work with architects?
- Yes, we collaborate closely with architects when the project calls for it.
- Can we stay in the house?
- Yes – usually only the part being extended is affected. We plan for minimum disruption.
Contact
Get a quote for house extension
Book a free home visit today and get a clear, fixed-price quote within 24 hours. We're happy to work in English.