Home Extensions Berkshire
Home Extensions in Berkshire
A home extension is the most effective way to add space and value to a Berkshire property without the cost and disruption of moving. Whether you want a larger kitchen, a new family room, an extra bedroom above, or a combined open-plan ground floor — Berkshire Bespoke Builders plans and builds home extensions across Ascot, Bracknell, Reading, Windsor, Maidenhead, Wokingham, Slough, Newbury, and all surrounding areas.
Types of Home Extension We Build
- ✓Kitchen extensions — single storey rear or side extensions for open-plan kitchen and dining
- ✓Single storey extensions — rear, side, wraparound and L-shape extensions at ground floor
- ✓Double storey extensions — two floors of new space for maximum value per £ spent
- ✓Side-return extensions — filling the narrow gap beside Victorian and Edwardian semis
- ✓Wraparound extensions — combined rear and side for maximum ground-floor footprint
Choosing the Right Type of Home Extension
The right type of home extension depends on what space you need, your budget, and what your planning position allows. A kitchen extension is the most popular single project — adding an open-plan kitchen and dining space with bi-fold doors and a rooflight. A single storey extension can serve as a utility room, home office, playroom, or living room. A double storey extension gives you two floors for a better cost-per-square-metre than two separate builds, and is the right choice when you need both a ground-floor room and an extra bedroom or bathroom above.
What Is Included
Every home extension we quote covers: site clearance and groundworks; strip or raft foundations; cavity brick and block walls to match the existing property; roof structure, insulation, and weatherproof covering; external joinery — bi-fold doors, French doors, windows, and rooflights; cavity and internal insulation to current building regulation standards; internal wall and ceiling plastering; first-fix electrics and plumbing; building regulation submission and attendance at all inspection stages; and the Building Regulations Completion Certificate. We do not use sub-contractors for the structural shell — our own team carries out every stage.
Typical Costs
Home extension costs in Berkshire typically range from £25,000 for a compact single storey flat-roof extension to £120,000+ for a full double storey extension with premium glazing. A typical single storey kitchen extension costs £30,000–£70,000. A double storey extension adding a new kitchen/dining space below and a bedroom above typically costs £75,000–£120,000 depending on size and specification. We provide fully itemised fixed-price written quotes — no provisional sums, no hidden extras.
Planning & Building Regulations
Most single storey rear home extensions in Berkshire qualify under permitted development rights — meaning no planning application is required. The standard permitted development limits are 3m rear projection for semi-detached and terraced properties, 4m for detached homes. Under the Neighbour Consultation Scheme (Prior Approval), these limits extend to 6m for semis and 8m for detached. Double storey extensions generally require a full planning application. All home extensions require Building Regulations approval regardless of whether planning is needed. We handle both the planning assessment and the building regulation submission — and attend every inspection stage.
Our Process
1. Free site visit — Pindi Sahota visits, measures, assesses your planning position, and discusses options. 2. Fixed-price itemised written quote — covering every line of material and labour, typically within 5 working days. 3. Building regulation drawings and submission. 4. Agreed week-by-week construction programme provided before work starts. 5. Groundworks, foundations, and drainage. 6. Brickwork superstructure and structural steelwork. 7. Roof structure and covering. 8. Windows, doors, and external finish. 9. Insulation, plastering, first-fix services. 10. Building control inspections at each key stage. 11. Snagging, handover, and Building Regulations Completion Certificate.
Why Choose Berkshire Bespoke Builders
- ✓Owner-managed — Pindi Sahota is on site and managing your job personally
- ✓32 years on the tools — time-served builder, 25 years fitting bespoke kitchens
- ✓Fully insured — public liability and employer's liability on every project
- ✓Fixed-price written quotes — itemised by material and labour, no hidden extras
- ✓Building regs managed — we submit applications and attend all inspection stages
- ✓Based in Berkshire — Binfield, Bracknell RG42. No travel surcharges or delays
Extension Types
Explore Home Extension Options
Kitchen Extensions
Open-plan kitchen and dining extensions with bi-fold doors, rooflights, and structural openings. The most popular home extension type in Berkshire.
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Single Storey Extensions
Rear, side, L-shape, and wraparound single storey extensions for kitchens, living rooms, utility rooms, and home offices.
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Double Storey Extensions
Two floors of new living space — typically a new ground-floor room plus an extra bedroom or bathroom above. Best cost-per-square-metre of any extension type.
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Home Extensions Berkshire — Common Questions
How much does a home extension cost in Berkshire?
Home extension costs in Berkshire typically range from £25,000 for a compact single storey flat-roof extension to £120,000+ for a full double storey extension with high-specification glazing and finishes. Kitchen extensions typically fall between £30,000 and £70,000. We provide fully itemised fixed-price written quotes.
Do I need planning permission for a home extension in Berkshire?
Most single storey rear extensions in Berkshire qualify under permitted development — no planning application required. The standard limits are 3m rear projection for semi-detached and terraced properties, 4m for detached. These extend to 6m and 8m under the Neighbour Consultation Scheme. Double storey extensions generally require full planning permission. We check the rules for your specific address at the free initial visit.
What is the difference between a single storey and double storey extension?
A single storey extension adds one storey at the rear or side of your home — typically adding kitchen, dining, or living space. A double storey extension adds two floors, giving you additional space at both ground floor and first floor level — often combining a new kitchen/dining space below with a new bedroom or bathroom above. Double storey extensions typically offer better cost-per-square-metre.
How long does a home extension take to build?
A single storey home extension typically takes 10–14 weeks on site. A double storey extension typically takes 14–20 weeks. Pre-build stages including building regulation drawings and approval add 6–10 weeks. We provide a detailed week-by-week programme at quote stage.
Can I add value to my home with an extension in Berkshire?
Yes — a well-designed and properly built home extension consistently adds value to Berkshire properties. Kitchen and open-plan living extensions are typically the highest-return projects. A double storey extension that adds a bedroom adds measurable value in the Berkshire market. The quality of the build matters: a properly permitted, building-regulation-approved extension with a completion certificate adds significantly more value than an unpermitted one.
Do I need building regulations for a home extension?
Yes — all home extensions require Building Regulations approval, regardless of whether planning permission is needed. Building regulations cover structural integrity, thermal insulation, fire safety, drainage, and means of escape. We submit all building regulation applications and attend every inspection stage. You receive a Building Regulations Completion Certificate at the end, which is required when you sell the property.
What is a side-return extension?
A side-return extension fills the narrow gap that runs down the side of many Victorian and Edwardian semi-detached properties. Combined with an opening through the existing rear wall, it creates an L-shaped extension that transforms the ground floor into a wide, open-plan space — without extending as far into the garden. Side returns are a popular choice in Maidenhead, Windsor, Twyford, and across the older housing stock in Berkshire.
Can I stay in my home during a home extension build?
Yes — for the majority of home extensions you can remain in your property throughout the build. We sequence the work to minimise disruption, protect existing living areas, and secure any opening at the end of every working day. The main disruption period is when the structural opening between the old and new space is created — usually a 2–3 day intensive stage we plan around your schedule.
Get a Quote for Your Home Extension
Free written quote — usually within 48 hours of your enquiry. Covering all of Berkshire.