Wirral
House Extensions in West Kirby
Local builders. Fixed-price quotes. 20-year structural guarantee. CNR Construction covers West Kirby and the surrounding area.
House Extensions in West Kirby
West Kirby sits at the north-west corner of the Wirral peninsula, looking out over Marine Lake and the Dee estuary towards Hilbre Islands and the North Wales coast. It consistently attracts professionals commuting to Liverpool and Chester, and the property values make extension a compelling investment compared to moving.
What to expect building in West Kirby
West Kirby Conservation Area covers parts of the town centre and the streets near Marine Lake. Properties within the conservation area lose the right to use the Prior Approval scheme for larger rear extensions, and some exterior changes also need formal consent. We know the conservation area boundary well and always confirm the planning position for any West Kirby project before a design is settled on. Coastal exposure on the more exposed roads near the seafront means we specify render mixes and window materials rated for salt air, particularly on properties facing north-west towards the prevailing weather.
Typical housing stock in West Kirby
Victorian and Edwardian semi-detached and detached properties line the roads between the village and the seafront, including Column Road, Sandy Lane, and the streets off Grange Road. Modern housing is less common here than in most of Wirral. Properties near Caldy on the southern edge tend to be larger detached homes on more generous plots.
CNR Construction are Wirral-based builders with over 15 years of experience across Merseyside. We cover West Kirby 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 West Kirby
A completed project in this area.
What's Included
Every house extension we build in West Kirby 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 West Kirby
Beyond those specific considerations, many single-storey rear extensions in West Kirby 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 West Kirby 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 West Kirby
Do I need planning permission for a house extension in West Kirby?
West Kirby Conservation Area covers parts of the town and the streets near Marine Lake. Properties within it cannot use the Prior Approval scheme for larger extensions. Wirral Council confirms the boundary for specific addresses. Standard PD rules apply to the main residential streets outside the conservation area. 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 West Kirby?
Costs in West Kirby 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 West Kirby?
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 West Kirby?
Yes. CNR Construction are based in Wirral and cover West Kirby 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 West Kirby and the surrounding areas of Wirral.
Get a Free Quote for Your West Kirby Extension
We visit your property, discuss your plans, and provide a detailed written quote. No obligation, no pressure.