Wirral
House Extensions in Birkenhead
Local builders. Fixed-price quotes. 20-year structural guarantee. CNR Construction covers Birkenhead and the surrounding area.
House Extensions in Birkenhead
Birkenhead has a wide range of housing from Victorian terraces in Tranmere and Claughton to the larger villas around Birkenhead Park and the distinctive character streets of Oxton. For many families here, extending is the smartest move financially, adding the space of a larger home without the stamp duty, estate agent fees, and disruption of moving.
What to expect building in Birkenhead
Oxton Village Conservation Area is the main planning sensitivity in Birkenhead. Properties within it need to match the Victorian character carefully, including materials, window proportions, and roof profiles. The local Victorian brick across much of Birkenhead is a distinctive dark-red stock that modern facing bricks rarely match well, so we source bricks carefully for any extension with exposed matching brickwork. In the denser terraced streets around Tranmere, rear access via jiggers (back entries) affects scaffold positioning and materials delivery, which we factor into the programme at the planning stage.
Typical housing stock in Birkenhead
Victorian mid-terraced properties dominate the streets around Rock Lane East, Borough Road, and the Tranmere area. Larger detached and semi-detached Victorian villas sit on the roads around Birkenhead Park and Clifton Park Road. Edwardian semi-detached housing is widespread in Claughton and the streets between Prenton and the town centre.
CNR Construction are Wirral-based builders with over 15 years of experience across Merseyside. We cover Birkenhead as part of our wider service area. View our full house extensions service for details on everything we offer.
Extension Types We Build
- Single-storey rear extensions
- Double-storey rear extensions
- Side return extensions
- Wraparound extensions
- Open-plan kitchen-diner layouts
- Bifold and sliding door installations
- Vaulted ceilings and skylights
- Underfloor heating
Our Work in Birkenhead
A completed project in this area.
What's Included
Every house extension we build in Birkenhead is fully managed from groundworks to final plastering.
Groundworks and Foundations
Excavation, drainage, and concrete footings built right from the start.
Structural Brickwork
Matching brickwork tied seamlessly into your existing property.
Roofing
Pitched, flat, or lantern roofs, weathertight and fully guaranteed.
Windows and Doors
Supply and fit of bifold doors, skylights, and Velux rooflights.
Insulation and First Fix
Fully insulated walls, floor, and roof to current building regulations.
Plastering
Skimmed smooth walls ready for your decorator.
Planning Permission in Birkenhead
Beyond those specific considerations, many single-storey rear extensions in Birkenhead fall within Permitted Development rights and do not require a planning application to Wirral Council. Standard PD limits are 3 metres beyond the original rear wall for semi-detached and terraced houses, and 4 metres for detached houses. Larger single-storey extensions of up to 6 metres or 8 metres may be possible under the Prior Approval scheme.
We confirm the planning position for every project before work begins. For a full breakdown of the rules, see our planning permission guide.
Our Guarantee
Every house extension we complete in Birkenhead is backed by our 20-year structural guarantee, provided in writing at handover. It covers structural integrity and workmanship from the date of practical completion and is transferable if you sell the property.
We also provide fixed-price written quotes before any work starts. What we quote is what you pay.
20 Years
Structural guarantee
15+
Years experience
50+
Projects completed
Fixed
Price quotes
Questions About House Extensions in Birkenhead
Do I need planning permission for a house extension in Birkenhead?
Oxton Village Conservation Area and parts of Hamilton Square have additional planning controls. Wirral Council can confirm whether your property falls within the designated boundary. Standard permitted development rules apply to the main residential streets outside these areas. In general, single-storey rear extensions within the standard Permitted Development limits do not require a planning application to Wirral Council. The limit is 3 metres for semi-detached and terraced houses and 4 metres for detached houses. Larger extensions under the Prior Approval scheme may also be available depending on your specific property and location. We confirm the exact position before any work begins.
How much does a house extension cost in Birkenhead?
Costs in Birkenhead vary depending on the size, type, and specification of the project. A single-storey rear extension typically starts from around £1,500 to £2,000 per square metre for a well-built, fully insulated extension. CNR Construction provides a detailed fixed-price written quote before work starts, so you know the full cost upfront with no surprises.
How long does a house extension take to build in Birkenhead?
A single-storey rear extension typically takes 8 to 14 weeks on site once work begins. A double-storey extension may take 12 to 20 weeks depending on scope. We agree a programme before starting and keep you updated at every stage.
Do you cover Birkenhead?
Yes. CNR Construction are based in Wirral and cover Birkenhead and the surrounding areas of Wirral. Call us on 07784 255380 or contact us online to arrange a free site consultation.
Also Covering Nearby Areas
We work across Birkenhead and the surrounding areas of Wirral.
Get a Free Quote for Your Birkenhead Extension
We visit your property, discuss your plans, and provide a detailed written quote. No obligation, no pressure.