Expert Oxfordshire Extension Builders – Stay Dry Extensions

Your Trusted Local Team

Looking to transform your home in Oxford? At Stay Dry Extensions, we specialise in high-quality, affordable home extensions across Oxfordshire — including Oxford, North Oxford, Summertown, Headington, Kidlington and surrounding areas. Whether you’re after a rear extension, a wrap-around, side-return or kitchen extension, our local team handles every stage: design, planning permission, building regulations and final build.

Why Choose Us in Oxford?

1. Local experience: We’ve worked with many Oxford homes, from Victorian terraces to modern semi-detached properties – we know planning-preferences in Oxford City and the county councils.
2. Weather-proof builds: True to our name, Stay Dry Extensions ensure your new space is waterproof, fully insulated and built to last so you don’t face damp, leaks or issues later.
3. Transparent, affordable pricing: We pride ourselves on cost-effective solutions for Oxford homeowners — without compromising on quality.
4. From concept to completion: We offer a full “design & build” service under one roof, meaning fewer delays, single point of contact and better value.
5. Value-adding homes: A well-planned extension in Oxford can add 10-35% value to your home. We’ll help maximise your return.

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Our Extension Services in Oxford

Rear House Extensions

Extend your living space into the garden. Ideal for creating open-plan kitchen/diners with bi-fold doors, full-height glass, a modern light-filled environment. Designed for Oxford homes looking to marry indoor-outdoor living.

Side-Return & Wrap-Around Extensions

Have a narrow passage or want to maximise your footprint? Our side-return and L-shaped wrap-around extensions are perfect for Oxford’s period homes. Add substantial square footage without losing garden space.

Kitchen Extensions

Upgrade your kitchen to a spacious, social cooking-dining zone. The most popular extension type in Oxford – high return on investment, excellent lifestyle uplift.

Double-Storey Extensions

Need extra bedrooms or a larger family home? Our double-storey builds can add a whole floor, bringing space and value. Especially effective in Oxford suburbs where families look to stay rather than move.

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How the Process Works

1. Free on-site consultation in Oxford: We meet you on-site, discuss ideas, take measurements and understand your budget.
2. Design & Planning: We prepare architectural drawings, obtain planning permission (if needed) and handle building regulation submissions.
3. Construction & Management: We manage all trades, waterproofing, structural works, finishing — you get one point of contact and regular updates.
4. Completion & Handover: We ensure everything is finished to our high standard, leave the site clean and deliver your extension ready to live in.

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Cost Guide for Oxford Home Extensions

While every project differs, here are typical cost ranges for Oxfordshire:

* Single-storey rear or side extension: from £1,800–£2,500 per m² depending on specification.
* Wrap-around or large kitchen extension: from £2,200–£3,000 per m² based on size and finish.
Before any build starts we’ll provide you a fully itemised quote — no surprises.

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FAQs for Oxford Home Extension Projects

Do I need planning permission in Oxford?
Often, single-storey rear or side extensions fall under *permitted development*, but conservation areas or listed homes need full applications. We’ll check and guide you.

Can I stay in the home during the build?
Yes — most of our Oxford jobs allow you to remain living in while we build, with phased works and safe access.

How long will it take?
Typically 10–14 weeks for a single‐storey extension; larger or multi-storey jobs may take up to 5–6 months. Your schedule will be laid out at contract stage.

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Famous Local Buildings in Oxford and Their Extensions

Oxford is famed for its “dreaming spires” and historic colleges, yet many of its most iconic buildings tell not just of original construction but of successive extensions, adaptations and additions. For homeowners considering a home extension in Oxfordshire, these buildings offer inspiration: whether it’s blending old and new, respecting heritage, or expanding sensitively while adding value. Let’s explore several exemplar buildings and the lessons they give for extending your own home.

Radcliffe Camera

Built between 1737-1749 and designed by James Gibbs, the Radcliffe Camera is perhaps Oxford’s most iconic circular library building. Wikipedia
Although this building is not strictly an “extension” in the way a home extension is, it does demonstrate key lessons:

• The importance of architectural integration: the circular form sits harmoniously with the older adjacent Bodleian complex.

• Use of high-quality materials and craftsmanship adds enduring value.
  For homeowners, the takeaway is: when you extend your home, design and finish matter for long-term value just as they do for landmark buildings.

 

Clarendon Building

Completed in 1715 by architect Nicholas Hawksmoor, the Clarendon Building was originally built for the Oxford University Press. oxfordvisit.com
Key points relevant to extensions:

• It was constructed soon after the press outgrew its previous basement location — a functional extension of capacity rather than ornamental.

• The style and materials respected the surrounding architecture (important for conservation areas).
  In home extension terms: when you build, consider how your addition relates to the existing structure and context (matching materials or sympathetic contrast).

 

Extensions to Brasenose College (1961)

One of the more explicit examples of extension in Oxford is the project at Brasenose College. The 1961 extension by Powell & Moya provided new student study bedrooms grouped around staircases, and carefully designed to be “harmonious” with the existing college buildings. c20society.org.uk
Lessons for homeowners:

• Even modern extensions can succeed if they respect scale, light impact and context (here, they took no light from the older buildings).

• Extension quality and design integration matter for future proofing and value.

• When expanding your home, consider light, privacy, structural integration — just as institutions do.

 

Tower of the Winds (Radcliffe Observatory)

While the tower itself was completed in 1794, the observatory complex has seen multiple additions and adaptations over centuries. Wikipedia
For your home extension business, it highlights:

• Historic buildings evolve in phases; similarly, your home may be extended in phases (single storey now, maybe loft later).

• Additions don’t always replicate the original—they complement and enhance them.

 

Applying These to Your Home Extension Project

• Context-sensitive design: Like the buildings above, your extension should respect and respond to the existing house and the neighbourhood (especially in Oxfordshire/Bucks conservation zones).

• Quality finish & materials: The older buildings stand the test of time because of craftsmanship—your extension should aim for the same.

• Light, space, flow: Extensions at these historic buildings often improved usability and added value; a home extension should too (kitchen-diner flow, light from new bi-folds, etc.).

• Value uplift: Just as the historic buildings’ additions enhanced their significance, a well-designed home extension can add 10-30% value (depending on type and finish).

• Incremental growth: Phased or future-proof designs allow a home to evolve, just as Oxford buildings evolved over centuries.

Oxford’s architectural heritage offers a rich source of inspiration for anyone considering a home extension. The success of historic additions lies not just in style—but in how they connect old and new, respond to context and deliver lasting value. For homeowners in Oxfordshire and Buckinghamshire, working with an extension specialist who understands this layering of architecture can make all the difference.

 

Ready to Start Your Oxford Home Extension?

If you’re in Oxford or nearby and ready to begin your extension journey, call us today on 0800 124 4646 or fill out our online quote form. Let’s make your home extension project simple, local and value-adding.

Request your free, no-obligation consultation in Oxford now!