Local & Available near you
As the map below shows we cover all areas locally in Oxford & Bucks, including those between the pins.
Oxfordshire
Buckinghamshire
Bicester
Banbury
Abingdon
Aylesbury
High Wycombe
Marlow
Amersham
Thame
Oxford
Didcot
Abingdon-on-Thames
Witney
Carterton
Kidlington
Wallingford
Henley-on-Thames
Beaconsfield
Gerrards Cross
Great Missenden
Chalfont St Giles
Chalfont St Peter
Princes Risborough
Wendover
Buckingham
Watlington
Summertown
Headington
Eynsham
Henley-on-Thames
Chipping Norton
Burford
Princes Risborough
Great Missenden
Local – Affordable – Professional
Local Areas we build home extensions in
You have many options for extending your home, these range from adding basements, to conservatories, through to full multi storey extensions.
Passionate – Dedicated – Professional
Frequently Asked Questions
Here are some questions that home owners in Oxfordshire & Buckinghamshire often ask about the cost of adding a home extension, or about planning and regulation requirements, and other generl home extension questions.
The average house extension in Oxford or Buckinghamshire costs between £1,800–£2,800 per m², depending on design, materials, and size. Single-storey builds start around £45,000, while two-storey extensions often exceed £80,000. For an accurate quote for your extension please contact us.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Many small extensions fall under permitted development rights, but if your property is listed or in a conservation area, you’ll likely need full planning permission. Always check with your local council (Oxford City Council or Buckinghamshire Council) before starting work.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
A side return extension fills the narrow alley beside a semi-detached or terraced house, while a wrap-around combines a side and rear extension to form an L-shape — ideal for open-plan kitchen-diner layouts.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Most single-storey extensions take 10–14 weeks from groundwork to completion. Two-storey or complex designs can take up to six months, depending on planning approval and weather.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Each district (e.g., Aylesbury Vale, Cherwell, South Oxfordshire) has slightly different guidelines. Generally, extensions must not exceed half the original house’s footprint and should be built with materials matching the existing property.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Expect to pay between £1,800–£2,800 per m² for standard builds, and up to £3,000/m² for premium finishes or complex structures like basements.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Yes — a two-storey extension generally offers better value per square metre, since the roof and foundation are shared.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Simplify the layout, avoid bespoke glazing, reuse existing foundations if possible, and hire an experienced local extension builder such a Stay Dry Extensions Limited to minimise delays.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Open-plan kitchen-diner layouts with large bifold doors are currently trending.
Many Oxfordshire homeowners combine rear extensions with skylights or vaulted ceilings to maximise natural light.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Yes most definitely — even a 10–15 m² side or rear extension can transform space usability and add up to 20% to property value when well-designed.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Use insulated timber frames, triple glazing, and solar or heat-pump systems. Local architects in Oxford and Buckinghamshire can advise on sustainable planning materials.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
You can usually extend up to 3 m (terraced) or 4 m (detached) without permission, provided you don’t exceed 50% of your garden area and use similar materials. Always confirm with your council before you start.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
If your extension work affects a shared wall or boundary, you must serve a party wall notice to neighbours at least two months before starting work.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Yes — Buckinghamshire has many reputable contractors serving Aylesbury, High Wycombe, and Amersham. Always choose builders with recent local case studies, transparent pricing, and verified public liability insurance.
Stay Dry Extensions Limited provide services in your area and are highly recommended.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Start by checking local, well-reviewed builders in Oxford who specialise in home extensions. Look for reviews on Trust-a-trader, and Google Maps. Local Oxfordshire specialists understand planning rules and can deliver faster, more compliant results.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Most professional Oxford extension builders manage the full process — from planning applications to building regulations and final completion. Many have in-house architects or work with local design partners familiar with Oxford City Council requirements.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Expect a lead time of 6–10 weeks from quote acceptance to project start. Demand in Oxford is high, especially in spring and summer, so booking early ensures availability.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Absolutely. Many Buckinghamshire builders collaborate with architects and planning consultants to produce 3D designs, layout drawings, and planning submissions. Ask for a design-and-build package for smoother communication and cost control.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Often yes. Local builders in Oxford and Buckinghamshire have lower overheads and better supplier relationships, meaning more competitive pricing and faster turnaround times. This is certainly the case for Stay Dry Extensions Limited who can offer you a great deal.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Prices vary by complexity, but most Oxfordshire builders charge between £1,800–£2,800 per m² for complete extensions. Get detailed, itemised quotes to compare finishes, labour, and materials.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Yes — most local builders in Oxfordshire and Buckinghamshire offer free, no-obligation quotes and site visits. This helps you compare options and check compatibility before committing.
If you would like to have a chat with us, ask any questions or get a free quote, just call us free on 0800 124 4646
Request a fixed-price contract with all materials and planning fees listed. Transparent builders will include groundwork, electrical, and plumbing costs upfront. It is really important to discuss this sort of thing with the company you use before you start.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Many do. Full-service design-and-build companies manage everything — from initial plans and planning permission to structural work, electrics, and finishing. This saves time and reduces communication gaps between trades.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Most single-storey extensions take around 12–14 weeks, while two-storey builds can take up to six months depending on design and weather conditions.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
In most cases, yes. Experienced Oxford and Buckinghamshire builders can phase construction so you remain in your home with minimal disruption — especially for single-storey rear or side extensions.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Always confirm. Reputable builders include building control inspections and certification in their total quote. These approvals are essential for resale and insurance compliance.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Verify the builder’s Company House registration, insurance documents, and Trust-a-Trader membership. Review their Google Business Profile for consistent address details and client reviews.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
Professional builders typically offer a 10-year structural warranty, alongside guarantees for specific elements like roofing or electrics. Always get these in writing.
If you would like to have a chat with us, ask any questions or get a quote, just call us free on 0800 124 4646
