
Design, Planning & Build for Clay Hill Properties
A well-designed extension can transform how you use your Clay Hill home. We have years of experience delivering projects in this area, working closely with Enfield Council to navigate planning requirements and ensure every build meets current regulations.
Our experience in Clay Hill covers the full spectrum of residential extensions — from modest single storey additions to ambitious whole-house remodels. We treat every project in the Enfield area with the same level of care, detail, and professionalism.

A recent extension project in the Enfield area
Having completed numerous projects in Clay Hill, we know the area's architectural character, common property types, and planning sensitivities inside out. Our relationship with Enfield Council means we can anticipate likely queries and address them in our initial submission.
We also maintain a network of trusted local contractors, structural engineers, and party wall surveyors across Enfield who we work with regularly — which keeps your project running smoothly.
Planning is often the part of the process homeowners in Clay Hill worry about most, but with the right guidance it is straightforward. We handle every aspect of the Enfield Council submission — from initial pre-application advice through to determination and discharge of conditions.
Our planning strategy is evidence-based: we research precedent decisions in your area, assess neighbour impact carefully, and present designs that meet both your aspirations and the authority's expectations. This approach consistently delivers positive outcomes.
Clay Hill has a diverse housing stock and we have experience extending all property types in the area. Our architects adapt designs to suit the character and structure of each home, whether that means matching original brickwork on a period property or creating a contemporary contrast on a more modern home.
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Covering EN2 & surrounding postcodes
Guide prices for house extensions in the Enfield area. Every project is different — we provide a detailed, itemised quote after a free site visit.
| Extension Type | Typical Cost |
|---|---|
| Single Storey Rear Extension | £35k – £70k |
| Double Storey Extension | £55k – £120k |
| Side Return Extension | £25k – £50k |
| Wrap-Around Extension | £60k – £130k |
| Loft Conversion (Dormer) | £40k – £65k |
| Kitchen Extension | £30k – £60k |
| Basement Conversion | £80k – £200k |
| Garage Conversion | £15k – £30k |
Prices are guide figures for 2026 based on projects in the Greater London area. PD = Permitted Development (no formal planning application needed in most cases). Actual costs depend on specification, site conditions, and scope.

Professional single storey extension design and planning for ground floor expansions
Typical: 6-12 weeks
Two-storey home extension design maximizing space and value
Typical: 8-16 weeks
Garden-facing extensions creating seamless indoor-outdoor living
Typical: 6-10 weeks
Narrow extensions utilizing side garden space efficiently
Typical: 6-12 weeks
Specialized kitchen and dining space extensions for modern living
Typical: 8-14 weeks
Converting attic space into valuable living areas
Typical: 6-10 weeks
Underground extensions creating additional living space
Typical: 12-20 weeks
Expert guidance through planning applications and permitted development
Typical: 8-16 weeks
Comprehensive extensions combining rear and side elements for maximum space
Typical: 10-18 weeks
Comprehensive whole-house renovation and modernization services
Typical: 12-24 weeks
Expert structural engineering services including underpinning and load-bearing work
Typical: 8-16 weeks
Converting garages into functional living spaces for bedrooms, offices, and studios
Typical: 4-8 weeksFrom the first phone call to moving into your new space — here is what to expect at every stage.
We visit your Clay Hill property, discuss your vision, assess feasibility, and give you honest guidance on costs and planning routes.
Our architects create detailed plans, 3D visuals, and construction drawings tailored to your Clay Hill home and how you want to live in it.
We prepare and submit your planning application, liaise with the local authority covering Clay Hill, and handle building regulations documentation.
Our vetted builders bring the design to life. We oversee the build, conduct regular site visits, and manage quality at every stage.
Final inspections, building control sign-off, snagging checks, and handover — your new Clay Hill space is ready to enjoy.
We design all types of extensions for Clay Hill homes: single storey rear extensions that open onto the garden, double storey extensions for growing families, side return extensions that reclaim wasted space, wrap-around extensions for maximum impact, loft conversions that add bedrooms and value, kitchen extensions with open-plan living, and basement conversions where ground conditions allow.
Every design is developed around your property's specific structure, orientation, and the character of the Enfield streetscape. We use 3D visualisation so you can see exactly how the finished extension will look and feel before any work begins on site.
Planning is often the part of the process homeowners in Clay Hill worry about most, but with the right guidance it is straightforward. We handle every aspect of the Enfield Council submission — from initial pre-application advice through to determination and discharge of conditions.
Our planning strategy is evidence-based: we research precedent decisions in your area, assess neighbour impact carefully, and present designs that meet both your aspirations and the authority's expectations. This approach consistently delivers positive outcomes.

Extension completed in the Enfield area
Every extension in Clay Hill must comply with building regulations covering structure, fire safety, thermal performance, drainage, ventilation, and accessibility. Our construction drawing packages are prepared to satisfy building control inspection at every stage.
We coordinate with structural engineers early in the design process and specify materials and details that meet or exceed current standards. During construction, we conduct site visits and review progress to ensure the build matches our approved drawings.
What sets us apart in Clay Hill is the combination of design quality, planning expertise, and hands-on project support. We do not just draw pretty pictures — we deliver buildable designs backed by rigorous technical documentation.
Our clients across Enfield consistently tell us they value our honesty, responsiveness, and the way we take the stress out of what can otherwise be a daunting process. We treat your home and your budget with the respect they deserve.

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Plan your dream kitchen extension in London. Explore side-return, rear and wrap-around options with 2026 costs, planning tips and design inspiration for every budget.

Updated 2026 price guide for house extensions across London. Costs for single storey, double storey, loft conversions and more — broken down by area and project type.
Ready to discuss your Clay Hill house extension project? Book a free, no-obligation consultation with our experienced team. We will visit your property, carry out a thorough assessment of the available options, and provide clear, detailed guidance on costs, timelines, planning requirements, and the best route to approval. Whether you are considering a single storey rear extension, a loft conversion, or a full refurbishment, our Clay Hill specialists are here to help. Call us today on 020 3051 9430 or request a callback online to get started.
Discover our comprehensive range of house extension solutions in London and surrounding areas
Professional single storey extension design and planning for ground floor expansions
Two-storey home extension design maximizing space and value
Garden-facing extensions creating seamless indoor-outdoor living
Narrow extensions utilizing side garden space efficiently
Specialized kitchen and dining space extensions for modern living
Converting attic space into valuable living areas
Call now to speak with our expert team. Get instant responses and professional guidance for your extension project.