Looking for trusted extension builders in Warwickshire? Parker Grears Developments Ltd is a fully insured, FMB-registered residential contractor delivering high-spec house extensions across Warwickshire — from single-storey kitchen-diners through to two-storey wraparound builds and full bungalow remodels. We project-manage every build end-to-end, from first design conversation to final handover, with one team responsible for the whole job.
Based in Nuneaton with 100+ projects completed and a 5-star Google rating across 26+ reviews, we serve homeowners throughout Warwickshire including Coventry, Rugby, Kenilworth, Warwick, Leamington Spa, Stratford-upon-Avon, Atherstone, Bedworth, Stockingford and the surrounding villages. Whether you’re adding a kitchen extension, a rear extension, a side return, a wraparound, an over-garage, or doing a full bungalow remodel like our recent Wolvey project, we have the experience and the in-house team to deliver.
Why Warwickshire homeowners choose Parker Grears
- Fully project-managed — one team from design through to handover. No sub-contractor confusion, no chasing trades, no surprises mid-build.
- FMB member, fully insured — Federation of Master Builders membership, £5M public liability, £10M employers’ liability, £2M contractors all-risk cover.
- Self-delivering — our own team handles groundworks, structural, brickwork, roofing, joinery and finishing trades. We bring in specialist sub-trades only where it’s the right call (electrics, gas, specialist glazing).
- Transparent pricing — fixed-price quotations once the design is locked, with optional QS-led cost breakdowns from £240 + VAT before you commit.
- Local knowledge — we know Warwickshire’s planning officers, building control teams and the local supply chain. That saves time and money.
- 5-star reviews — 26+ verified Google reviews, 5/5 average, 100+ projects completed since 2019.
Types of extension we build across Warwickshire
Single-storey extensions
The most common extension type — typically a kitchen-diner, family room, or larger living space at the rear of the property. Most single-storey extensions in Warwickshire fall under Permitted Development rights so don’t need a full planning application, just a Lawful Development Certificate. See our dedicated single-storey extensions Warwickshire page for cost guides, timelines and recent projects.
Double-storey extensions
Two-storey extensions add the most value per pound spent — you get the kitchen extension downstairs and a master bedroom + en-suite upstairs in one build. We’ve recently completed projects in Nailstone, Bulkington and the Wolvey bungalow conversion. See our double-storey extensions guide for typical layouts and budgets.
Kitchen extensions
The single most common reason Warwickshire homeowners extend — to create the open-plan kitchen-dining-living space that works for modern family life. Our kitchen extensions page covers layouts, bifold options, lighting, and budgeting.
Rear and side extensions
Rear extensions push your living space out into the garden. Side returns fill in the awkward gap on Victorian terraces. Wraparounds combine both. Our rear extensions guide walks through what’s possible on different property types.
Full bungalow remodels and conversions
Bungalows offer huge potential — adding a first floor (or partial first floor with apex glazing), reconfiguring the ground floor, and modernising the entire envelope. See our recent Wolvey bungalow remodel case study where we turned a tired 2-bedroom bungalow into a high-spec 4-bedroom family home with three en-suites, bespoke oak staircase, and feature apex glazing.
Areas we cover across Warwickshire
We build across Warwickshire, north Warwickshire, south Warwickshire, and into Leicestershire and the West Midlands. Our service area includes:
- Coventry — kitchen, double-storey and wraparound extensions
- Rugby — single-storey, side returns, kitchen-diners
- Kenilworth — premium extensions and full renovations
- Balsall Common — full builds and remodels
- Atherstone — extensions across all property types
- Hinckley — full extension service area
- Lutterworth — extensions and conversions
- Bedworth, Bulkington, Nuneaton, Stockingford, Wolvey, Nailstone — full extension and renovation work
- Warwick, Leamington Spa, Stratford-upon-Avon, Solihull — extensions and conversions on case-by-case basis (please ask)
How much do extensions cost in Warwickshire?
Extension costs in Warwickshire in 2026 typically start at £2,000 per square metre for a basic single-storey rear extension and rise to £3,500-£4,000 per square metre for a high-spec finish with bifold doors, vaulted ceilings, and underfloor heating. A standard 4m × 5m kitchen extension (20m²) sits around £40,000-£70,000 depending on finish level. Double-storey extensions are roughly £1,800-£2,500 per square metre because the ground works and roof spread across more usable floor area.
For a precise figure on your project, we offer a QS-led cost breakdown from £240 + VAT before you commit to a build. This gives you a written, room-by-room costed plan so there are no surprises later.
How long does an extension take?
- Single-storey extension (20-30m²): 12-16 weeks on site, plus 4-8 weeks for design/planning beforehand
- Double-storey extension: 16-22 weeks on site
- Full bungalow remodel: 6-9 months on site (the Wolvey project ran approximately 8 months)
- Garage conversion: 6-10 weeks
Recent extension projects in Warwickshire
- Wolvey — bungalow remodel & extension: Tired 2-bed bungalow transformed into a high-spec 4-bed family home with apex glazing, bespoke oak staircase, three en-suites, log burner, dog wash utility room. Designed by Ladbury Architectural Design.
- Nailstone — double-storey extension: Two-storey rear extension adding kitchen-diner downstairs and master suite upstairs. ~£155k.
- Bulkington — single-storey extension: Open-plan kitchen-dining extension with bifold doors and rooflight.
- Stockingford — garage conversion: Detached garage converted to additional bedroom suite.
See the full portfolio of our completed projects across Warwickshire for more.
What our customers say
“Sean and the team handled our entire kitchen extension from design through to the final coat of paint. We had one point of contact, the project ran to schedule, and the finish is exceptional. We’d use Parker Grears again without hesitation.” — Helen, Nuneaton
“Five-star service. Quality work, fair pricing, and the team kept the site clean throughout. Highly recommend.” — Yvette, Warwickshire