Extend & Transform Your Property
Whether you're looking to add extra living space, convert a garage or outbuilding, or build an entirely new structure, A.P.T Builders can help bring your ideas to life. We manage every stage, from groundwork to finishing touches, ensuring your extension is safe, functional, and beautifully finished.
Growing families, home working, and the desire for more space have made home extensions one of the most cost-effective ways to add value and functionality to your property. With over 18 years of experience building extensions across Kent, we understand the importance of careful planning and quality workmanship.
18+ Years Experience
Trusted extension builders in Kent
Full Project Management
From planning to completion
All Trades In-House
No subcontractor delays
Complete Build Solutions
We handle all types of extensions and conversions including single and double-storey extensions, garage conversions, loft conversions, barn conversions, garden rooms, and self-contained annexes. Our team includes experienced groundworkers, bricklayers, roofers, electricians, plumbers, and finishers.
Every extension begins with understanding your needs, budget, and property. We provide free consultations and can work with architects and structural engineers to ensure your project complies with building regulations. Serving Ashford, Canterbury, Maidstone, Folkestone, and all of Kent.
Our Extension & Conversion Services Include:
Single & Double Storey Extensions
Professional home extensions to expand your living space
Learn More →Garage & Loft Conversions
Transform unused spaces into functional living areas
Learn More →Barn Conversions
Transform agricultural buildings into stunning homes
Learn More →Outbuildings & Garden Rooms
Custom outbuildings, garden rooms, and self-contained annexes
Learn More →Planning & Structural Work
Expert planning assistance and structural engineering solutions
Learn More →Project Management
Complete project management from start to finish
Learn More →Groundwork & Foundations
Professional groundwork and foundation construction
Learn More →Why Choose A.P.T Builders?
Years Experience
Extensive experience in full builds and property alterations
Trusted Service
Trusted by homeowners throughout Kent for quality work
Fully Insured
Fully insured with expert local knowledge and expertise
Custom Solutions
Bespoke, cost-effective building solutions for every project
Our Extension & Conversion Work in Kent
Expert Building & Roofing Advice
Stay informed with our latest guides and articles about home maintenance, seasonal care, and building tips for Kent homeowners.
Latest Article: Planning Permission & Building Regulations in Kent
Learn how to navigate planning permission and building regulations with expert advice from our experienced team.
Read the Full Guide → View All ArticlesExtensions & Conversions FAQs
What types of extensions and conversions do you build?
We build all types of extensions including single and double-storey rear and side extensions, garage conversions, loft conversions, barn conversions, garden rooms, home offices, and self-contained annexes. We handle everything from small kitchen extensions to large two-storey additions and complete property transformations across Kent.
How long does a home extension take to build?
Timeline varies by project size and complexity. A single-storey extension typically takes 8-12 weeks, while double-storey extensions take 12-16 weeks or more. Garage conversions are usually 4-6 weeks. These timelines include groundwork, construction, first fix electrics and plumbing, plastering, second fix, and decoration. We provide detailed schedules during planning.
Do I need planning permission for an extension?
Many extensions fall under Permitted Development rights and don't need planning permission, but all require Building Regulations approval. We can advise on whether your project needs planning permission and help with the application process. We work with architects and structural engineers to ensure all necessary approvals are obtained before starting work.
How much does a home extension cost?
Costs depend on size, specification, and location. Single-storey extensions typically cost £1,500-£2,500 per square meter, while double-storey extensions range from £1,800-£3,000 per square meter. A typical single-storey kitchen extension might cost £25,000-£50,000, while larger double-storey projects can range from £60,000-£120,000+. We provide detailed, transparent quotes.
Can you manage the entire project from start to finish?
Yes, we provide complete project management covering design consultation, planning permission assistance, building regulations, groundwork, construction, roofing, electrics, plumbing, plastering, joinery, decoration, and final sign-off. You'll have a single point of contact throughout, and we coordinate all trades to ensure your project runs smoothly and on schedule.
What areas in Kent do you cover for extensions?
We serve all of Kent including Ashford, Canterbury, Maidstone, Folkestone, Dover, Tunbridge Wells, Sevenoaks, and surrounding areas. Based in Sellindge near Ashford, we're ideally positioned to provide professional extension and conversion services throughout the county with regular site visits and responsive communication.
Ready to Expand Your Home?
Contact us today for a free consultation and quote for your extension project.