House extension services in Coulsdon

House Extension Services in Coulsdon

Professional House Extension Solutions for Coulsdon Residents

Free Site Visit
Fast Turnaround
Local Coulsdon Expertise
High Planning Approval Rate

Professional House Extensions in Coulsdon

Planning a house extension in Coulsdon? Our expert architectural team specializes in creating beautiful, functional extensions that enhance your home's value and living space. Located within the Enfield catchment area, Coulsdon offers excellent opportunities for residential development, and our local expertise ensures your project benefits from professional design solutions tailored to the area's unique characteristics.

House extension project near Coulsdon

A recent extension project in the Croydon area

Local Expertise

Our Coulsdon team brings extensive local knowledge and professional expertise to every project. We understand Coulsdon's unique architectural character, planning policies, and building regulations, ensuring your project progresses smoothly through the planning and building control processes. With years of experience working across the Enfield area, our architects have developed strong relationships with local planning authorities, building control officers, and other key stakeholders.

Planning & Regulations

Navigating planning requirements in Coulsdon requires local expertise and up-to-date knowledge of Enfield Council's policies. Our architects understand the specific requirements for extensions in the area and can guide you through the planning application process, ensuring your proposal has the best chance of approval. We provide advice on design considerations, sustainability requirements, and community consultation processes.

Property Types We Work With in Coulsdon

Coulsdon 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.

Victorian terraces
Edwardian semis
post-war council houses
1930s semis
modern townhouses
period conversions

Free Quote for Coulsdon

Tell us about your project and get expert advice within 24 hours.

Get a Free QuoteCall 020 3051 9430

Mon–Fri: 9am–5pm

Free site visit & consultation

No obligation quote

Covering CR5 & surrounding postcodes

House Extension Costs in Coulsdon (2026)

Guide prices for house extensions in the Croydon area. Every project is different — we provide a detailed, itemised quote after a free site visit.

Extension TypeTypical 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.

Our Extension Services in Coulsdon

How Your Coulsdon Extension Project Works

From the first phone call to moving into your new space — here is what to expect at every stage.

Step 1

Free Consultation

We visit your Coulsdon property, discuss your vision, assess feasibility, and give you honest guidance on costs and planning routes.

Step 2

Design & Drawings

Our architects create detailed plans, 3D visuals, and construction drawings tailored to your Coulsdon home and how you want to live in it.

Step 3

Planning & Approvals

We prepare and submit your planning application, liaise with the local authority covering Coulsdon, and handle building regulations documentation.

Step 4

Construction

Our vetted builders bring the design to life. We oversee the build, conduct regular site visits, and manage quality at every stage.

Step 5

Completion & Sign-Off

Final inspections, building control sign-off, snagging checks, and handover — your new Coulsdon space is ready to enjoy.

House Extension Services

Specializing in residential extensions across Coulsdon, we provide tailored design solutions for every type of project. Our services include architectural design, planning applications, building regulations compliance, and construction drawings. We work closely with homeowners to create extensions that enhance their living space while maintaining the character and value of their property.

Planning Permission

Planning permission applications in Coulsdon require careful preparation and local knowledge. Our team has successfully submitted numerous planning applications across the Enfield area, achieving high approval rates through thorough preparation and understanding of local planning policies. We handle all aspects of the planning process, from initial feasibility studies to final approval.

Completed house extension in Coulsdon area

Extension completed in the Croydon area

Building Control

Building control compliance is essential for all construction projects in Coulsdon. Our team provides comprehensive building control drawings and applications, ensuring your project meets all structural, fire safety, and accessibility requirements. We work closely with building control officers to ensure smooth approval processes and compliance with current building regulations.

Why Choose Us in Coulsdon

With years of experience working across the Enfield area, our Coulsdon team combines creative design skills with practical project management, ensuring your project is delivered on time and within budget. We understand the unique challenges and opportunities presented by extensions in the area and can provide expert advice on the most appropriate design approach for your specific requirements.

Frequently Asked Questions About House Extensions in Coulsdon

How much does a house extension cost in Coulsdon?+
House extension costs in Coulsdon vary by type and size. Single storey rear extensions typically range from £35k – £70k, double storey extensions from £55k – £120k, and loft conversions from £40k – £65k. These are guide prices for 2026 — we provide an accurate, itemised quote after a free site visit to your Coulsdon property.
Do I need planning permission for a house extension in Coulsdon?+
Many extensions in Coulsdon can be built under permitted development rights without a formal planning application. This typically covers single storey rear extensions up to certain size limits. However, if your property is in a conservation area, is a listed building, or if the extension exceeds permitted development limits, a full planning application is needed. During our free consultation we assess your Coulsdon property and advise on the best route — and handle the entire application if needed.
What types of house extensions can you build in Coulsdon?+
We design and build all types of extensions in Coulsdon: single storey rear extensions, double storey extensions, side return extensions, wrap-around extensions, loft conversions (dormer, hip-to-gable, mansard), garage conversions, basement conversions, and kitchen extensions. Coulsdon has a mix of Victorian terraces, Edwardian semis, post-war council houses — we tailor every design to the specific property type.
How long does a house extension take in Coulsdon?+
Timelines vary by project: a single storey extension typically takes 3–4 months on site, a double storey 5–7 months, and a loft conversion 6–8 weeks. Before construction, the design and planning stage usually takes 8–12 weeks. We map out a detailed programme during your free consultation so you know exactly what to expect.
Do you handle planning applications with Coulsdon council?+
Yes — we have extensive experience submitting planning applications to the local authority covering Coulsdon. We prepare all drawings, design & access statements, and supporting documents, then manage communication with planning officers through to decision. Our knowledge of local policies helps avoid unnecessary delays or objections.
What areas near Coulsdon do you cover?+
We cover Coulsdon and all surrounding areas within a 20-mile radius. This means we can handle projects across the wider Croydon area, with the same level of local knowledge and expertise you'd get from a firm based in Coulsdon itself.

Ready to Start Your Coulsdon Extension?

Don't delay your Coulsdon extension project - get in touch today to discuss your requirements and receive expert advice on the best approach for your house extension. Our team is ready to help you bring your vision to life with professional design solutions and local expertise. We provide comprehensive support from initial concept through to project completion.

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