House Extensions and Architectural Design in Chigwell
Kirkwood provides architectural design, planning management, structural engineering, and building regulations for house extensions, loft conversions, and kitchen extensions in Chigwell. We manage the complete process in-house and deal with Epping Forest District Council regularly — including projects with Green Belt considerations, conservation area requirements, and the higher-specification extensions that are typical of Chigwell’s premium property market.
Chigwell sits on the western edge of Essex bordering East London and is distinct from much of Kirkwood’s service area in terms of property values and the scale of projects it generates. We cover Chigwell itself, Chigwell Row, Loughton, Buckhurst Hill, and the surrounding area.
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No fluff, just well designed home extensions
As trusted architects in Chigwell we give clear advice from the very beginning especially when it comes to build costs and design options. Our architectural design service covers everything from house extension plans and planning permission to structural input where needed. As local Chigwell architects we guide you through the full process and can also recommend reliable local builders. If you want a team that focuses on getting it right we are here to help.
- Avoid costly build errors
- Access reliable builders
- Prevent council disputes
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Google Reviews
Based in Brentwood, Essex, we were also introduced to builders and tradespeople through Kirkwood, and they were excellent—professional, respectful, and a pleasure to work with. If we ever take on another project, we wouldn’t hesitate to use them again.
We now have an amazing extension, and would be happy to use the team again.
Very knowledgeable and contactable throughout the process.
Couldn't ask for a better outcome and value for money.
Will definitely be recommending and 100% will use again!
5 star!!!
Our architectural design services in Chigwell
Kirkwood are experienced Chigwell architects providing full architectural design services for homeowners looking to extend or improve their property. From early design concepts to structural calculations and Chigwell planning applications, our house extension planning package includes everything you need to get started.
Architectural plans & drawings
We prepare detailed architectural plans based on your house extension goals and build budget. Some projects in Chigwell need full building regulations drawings for builders, while others only require scaled plans for planning approval. All drawings are clearly laid out, easy to follow, and tailored to your home. Every set of plans is prepared to meet Epping Forest District Council planning requirements.
Planning permission & permitted development
We’ll advise you on the right type of application for your house extension in Chigwell. This might be full planning permission, a householder application, permitted development or prior approval. Permitted development is common in this area but still requires formal approval and a Certificate of Lawfulness. We handle all the paperwork and deal directly with Epping Forest District Council on your behalf.
Building regulations & structural calculations
Every house extension must comply with building regulations. We provide all the technical drawings required and include structural calculations to support them. These drawings are used for council approval, builder pricing, and during construction. If needed, we can also produce full building regulations drawings, though they aren’t always necessary.
Extension planning in Chigwell
We offer a full extension planning service in Chigwell, covering everything you need to get your house extension moving. It starts with a quick Zoom consultation where we talk through what’s possible and give honest advice on design and build costs. It’s like having your own extension affordability guide, and the initial advice is completely free.
How much does an architect cost for a house extension in Chigwell?
Architect costs for house extensions in Chigwell typically start from around £1,400 and can go up to £3,000 depending on the size and complexity of the project. A small single storey extension under permitted development usually falls between £1,400 and £1,700. Detached homes often cost a little more due to the extra time needed for site measurements. While the cost of architectural plans is small compared to the full build, it’s one of the most important stages. A poor design can lead to big problems later, and we’ve been called in to fix plenty. Choose an experienced Chigwell architect and get your project off to a solid start.
Architect costs for house extensions
Architectural design costs in Chigwell depend on the size and type of property. Larger homes take more time to survey and require more detailed architectural plans, which can increase the cost. Double storey extensions tend to be the most expensive, while garage conversions are usually the most affordable. If your project includes internal changes, this can also add to the design time and overall price. As experienced Chigwell architects, we create clear extension plans tailored to your layout and budget.
What’s included in our architectural design services
Our architectural design services for Chigwell house extensions include everything you need to begin with confidence. We start by carrying out a full measured survey of your home inside and out. From there, we produce detailed existing and proposed extension plans along with any necessary revisions. You’ll also get a design review session to adjust your ideas and full planning application management with Epping Forest District Council.
It don’t stop there
As experienced Chigwell architects we take care of all communication with the council so you don’t have to. We also provide a free build cost estimate upfront and can recommend trusted local builders with fair pricing. Whether you’re planning a single storey extension, garage conversion or a full double
Need help finding a good local builder near you? This guide shares what to look out for and how to avoid costly mistakes.
Kirkwood articles: Expert home extension & renovation insights
Ready to begin your Chigwell project?
Book a Zoom consultation, get free expert advice, and move forward with the next stage – your architectural plans.
Get in touch by emailing info@kirkwoodbuild.co.uk or phoning 01268 944233 to schedule a free consultation. Let our Essex architects turn your ideas into a well-designed, approved, and beautifully planned extension.
Chigwell | Architectural Design & Planning
Postcodes we serve in and around Chigwell
IG7, IG6, IG8, IG9, E18, RM4, IG10
Frequently asked questions
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Do I need planning permission for a house extension in Chigwell?
It depends on the property and its location relative to the Green Belt and conservation area. Many Chigwell properties are in or near the Metropolitan Green Belt, which significantly affects what can be built under permitted development. Properties in Chigwell village conservation area also have restricted rights. Kirkwood checks both before designing.
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Which council covers planning in Chigwell?
Epping Forest District Council (EFDC) is the local planning authority for Chigwell and the surrounding area, including Chigwell Row, Loughton, and Buckhurst Hill. Kirkwood submits and manages all planning applications to EFDC.
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How does the Green Belt affect extensions in Chigwell?
Properties in the Metropolitan Green Belt are subject to stricter planning controls. Extensions that are permitted development elsewhere may need full planning permission. The 50 per cent rule applies, and the principle of limiting development in the Green Belt is a material consideration. Kirkwood assesses Green Belt constraints for every Chigwell project before designing.
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How much does a house extension cost in Chigwell?
A standard single storey rear extension in Chigwell costs from £45,000 to £70,000 shell build in 2026, depending on specification. Double storey extensions start from £90,000. Professional fees add 10 to 15 per cent. Kirkwood provides fixed fees before any work begins.
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Are Tree Preservation Orders a problem in Chigwell?
Possibly. The proximity of Epping Forest and the many mature trees on Chigwell's larger plots mean TPOs are more common here than in most of Essex. Where trees are within 30 metres of the proposed extension, a foundation depth calculation must account for tree species, height, and distance. Kirkwood checks TPO status for every Chigwell project.
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Does Kirkwood do loft conversions in Chigwell?
Yes. Loft conversions in Chigwell include rear dormers, hip-to-gable conversions, and mansard conversions on the larger Victorian and Edwardian properties. Kirkwood designs, manages planning with EFDC, and produces structural engineering and building regulations in-house.
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How do I book a consultation for a Chigwell extension?
Book a free Discovery Call — 30 minutes, no charge, no obligation. Kirkwood researches the property before the call, including Green Belt status, TPO checks, and conservation area position. Call 01268 944233 or book at kirkwoodbuild.co.uk/quick-quote/
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