Builders who disappear mid-project
Extension projects involve weeks of work and multiple trades — when communication breaks down, homeowners are left chasing updates and fixing mistakes themselves.
Home Extensions
More space, more value, designed, managed and delivered properly.
Whether you need a single-storey rear extension, a side return or a full wrap-around, we manage every stage from foundations to final decoration — one company, one point of contact, no chasing trades.
What's included
- Structural design coordination
- Foundations and groundworks
- Brickwork and roofing to match existing
- Windows, doors and bi-folds
- First and second fix plumbing & electrics
- Plastering, flooring and decoration
- Building Control liaison
- Before, during and after photographic surveys
Structural work, Party Wall agreements and Building Control are handled as part of our managed service.
The challenge
Problems homeowners face
Extending your home is a major investment. These are the frustrations we hear from homeowners before they find a builder they can trust.
Quotes that don't match reality
A low headline figure often excludes foundations, steelwork, drainage, kitchen fit-out or Building Control — costs spiral once work begins.
Poor integration with your existing home
Mismatched brickwork, wrong roof tiles, awkward room proportions and thermal bridges that cause damp and heat loss.
Planning and Building Control surprises
Discovering PD limits, neighbour objections or structural issues after you've committed — causing delays and redesign costs.
No quality control between trades
When each trade blames the last, defects get hidden behind plasterboard — and you're left with problems that surface years later.
Our approach
How we solve them
Quality Construction was built to solve exactly these problems — with systems, documentation and accountability at every stage.
One company, full extension delivery
From foundations and steelwork to bi-folds, kitchens and final decoration — one project manager, one programme, one standard.
Survey-first, fixed-price quotations
We assess ground conditions, structure and access before quoting. Your price reflects real scope — not optimistic guesswork.
Matched materials & sympathetic design
We sample existing brickwork and roof tiles, advise on proportions and ensure your extension looks like it was always part of your home.
Planning & Building Control managed
We advise on Permitted Development, coordinate structural design and handle all Building Control submissions and inspections.
Photographic surveys at every stage
Before, during and after surveys with clear reporting — nothing progresses until the previous stage meets our standard.
Why choose us
What's included
Why homeowners across Milton Keynes, Northampton and Bedford choose us for extensions.
- Single-storey, double-storey, rear, side and wrap-around extensions
- Structural design and steel beam installation coordinated
- Bi-fold doors, roof lanterns and kitchen extensions
- Building Control signed off before handover
- Fergus project management — full visibility throughout
- Written guarantees and professional completion pack
- Annual aftercare visit — we return every year
Extension types
Projects we deliver
Rear Extensions
The most popular way to open up your ground floor — kitchen, dining and living space to the garden.
Side Return Extensions
Transform a narrow side alley into usable floor area — ideal for Victorian and Edwardian terraces.
Wrap-Around Extensions
Rear and side combined for maximum space — popular for open-plan kitchen-diners.
Double Storey Extensions
Add ground and first floor space in one project — bedrooms, bathrooms and living areas.
Kitchen Extensions
Designed around how you live — bi-folds, roof lanterns, utility rooms and premium finishes.
Our system
How your project runs
Every extension follows the same proven system — organised, documented and designed to protect your investment.
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1
Free property survey
We visit your property, assess feasibility, take measurements and discuss your goals in detail.
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2
Fixed-price quotation
A clear scope of works with programme, specifications and transparent pricing — no pressure to proceed.
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3
Documentation & agreement
Contracts, specifications and payment stages agreed before any work begins.
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4
Managed construction
Your project manager coordinates all trades, materials and inspections throughout.
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5
Handover & aftercare
Completion survey, certificates and guarantees — plus an annual aftercare visit every year.
Quality control
Before, during & after surveys
Before
Photographic survey documenting existing conditions, access routes and protection requirements before work starts.
During
Stage inspections at structural, first-fix and pre-plaster milestones — issues addressed before being covered up.
After
Completion survey confirming workmanship standards, testing results and snag-free handover.
Annual aftercare visit
We return every year for a complimentary aftercare inspection — checking the work, addressing minor touch-ups and giving you continued peace of mind long after completion.
Peace of mind
Guarantees & documentation
Guarantees
- Written workmanship guarantee on all labour
- Insurance-backed guarantees available on qualifying works
- Manufacturer warranties on supplied products
- Building Control completion certificates where applicable
Your completion pack
- Detailed quotation and scope of works
- Contract and payment schedule
- Structural calculations where required
- Building Control certificates
- Electrical and plumbing test certificates
- Product guarantees and operating manuals
- Presentation folder at handover
Regulations
Planning & Building Control
Planning Permission for Extensions
Many rear and side extensions fall within Permitted Development, but limits apply to size, height and proximity to boundaries. We assess your property at survey and advise before you commit.
- Single-storey rear extensions: typically up to 4m (detached) or 3m (attached) under PD — subject to conditions
- Side extensions: width and height restrictions apply; some require planning permission
- Double-storey extensions: usually require full planning permission
- Conservation areas, Article 4 directions and listed buildings have stricter rules
- We advise on Lawful Development Certificates for PD projects — valuable when selling
Permitted Development for Extensions
Permitted Development allows certain extension work without a full planning application. We never assume PD applies — we verify against your property, neighbours and local constraints.
- Maximum eaves height, overall height and distance from boundaries must be checked
- Prior Approval required for larger rear extensions (3–6m detached, 4–8m detached under prior approval scheme)
- Materials must be similar in appearance to the existing dwelling where visible
- PD rights can be removed by Article 4 directions — common in some MK estates
- We confirm PD status at your free survey
Building Regulations for Extensions
All structural extension work must comply with Building Regulations — covering structure, fire safety, insulation, ventilation, drainage and electrical safety.
- Foundations sized for ground conditions and load — structural calculations where required
- Thermal performance must meet Part L — U-values for walls, roof and glazing
- Fire safety: escape routes, fire doors and detection where applicable
- Part P electrical and water regulations for kitchens and bathrooms
- Completion certificate essential for mortgage, insurance and resale
Avoid costly errors
Common mistakes to avoid
Learn from the errors we see homeowners make — so your project runs smoothly from day one.
Not checking PD limits before designing
Designing a 6m rear extension without confirming Prior Approval or planning requirements can force costly redesigns.
Underestimating foundation costs
Trees, clay soil, drains and access restrictions significantly affect groundworks — a survey reveals the true picture.
Separating structure from fit-out
Quoting 'shell only' then adding kitchen, bi-folds and landscaping separately often costs more than an integrated quotation.
Ignoring Party Wall Act
Work on or near shared walls requires proper notices — delays here can push programmes back by weeks.
Choosing a builder without systems
No project management, no surveys, no documentation — the industry default. We built Quality Construction to be the opposite.
Ready to plan your project?
Use our Project Planner for a realistic guide price, or read our detailed cost guide — then book a free survey for a fixed quotation.
Frequently Asked Questions
Do I need planning permission for an extension?
Many rear and side extensions fall under Permitted Development, but this depends on your property, location and size. We assess this at survey stage and advise clearly before any commitment.
How long does a typical extension take?
A single-storey rear extension typically takes 8–14 weeks depending on size, structural works and finishes. We provide a detailed programme with your quotation.
Will you handle Building Control?
Yes. We coordinate all Building Control submissions, inspections and completion certificates as part of our managed service.
Can you match my existing brickwork and roof tiles?
We take samples and source the closest match available. Where exact matches aren't possible, we advise on sympathetic alternatives before work begins.
Why We're Different
The Quality Construction Experience
Building work shouldn't be stressful. It should be exciting.
Most homeowners expect poor communication, hidden costs, missed deadlines and builders who disappear once the job is finished. We built Quality Construction to be the complete opposite.
Our Promise To Every Customer
Every project includes the following as standard.
Poor Communication
Dedicated Project Management
Regular updates from start to finish.
Hidden Costs
Fixed Detailed Quotations
Clear pricing with no surprises.
Builders Disappear After Completion
Annual Complimentary Aftercare
We return every year to inspect our workmanship.
Poor Workmanship
Multiple Quality Inspections
Every stage professionally inspected.
No Guarantees
Written Workmanship Guarantee
Complete peace of mind.
Poor Organisation
Structured Project Management
Everything planned and organised.
Multiple Contractors To Organise
Multi-Trade One Stop Solution
One company managing your entire project.
Builders Don't Respect Your Home
Clean & Professional Working Practices
Your home treated with care.
Delays & Missed Deadlines
Planned Project Scheduling
A clear programme from day one.
Poor Paperwork
Professional Documentation
Everything professionally recorded and supplied.
No Idea What's Happening
Before, During & Completion Surveys
Complete visibility throughout your project.
Different Trades Blame Each Other
One Dedicated Project Manager
One point of contact from start to finish.
Cheap Materials
Quality Products
Built to last.
Builders Never Return Calls
Responsive Customer Support
Fast, reliable communication.
Builders Cut Corners
Quality Without Compromise
Built properly the first time.
Feeling Like Just Another Customer
Customer Completion Gift
A small thank you for choosing us.
A fantastic job done on my property by Kyle and team. Highly recommend them for all roofing and guttering jobs. Also would like to add the great communication from start to finish. Thank you!
Kyle and the team did a great job today of cleaning my garage roof from moss and then painting a polymer waterproof coating onto the roof. The manufacturers 10 year guarantee for a single layer makes it an easy choice for fixing water ingress into a garage. Time will tell, but I have high expectations. All the rubbish generated was taken away so very pleased.
Kyle and his team at Quality Roofing were great, punctual, communicative, and reasonably priced. They removed our old solar heating panel, replaced the felt and tiles underneath, and disposed of the panel, all in under 90 minutes. Great service from a reliable team.
Kyle arrived quickly to look at a problem we had with an old Velux. He quickly set about repairing it and it is now working fine. We really appreciate his quick service. Highly recommended.
Get In Touch
Ready to start your project?
Book a free property survey. We will assess your requirements, provide transparent pricing, and explain how our system works.
- Phone 01908 015687
- Email enquiries@quality-construction.uk
- Areas Milton Keynes, Northampton, Bedford, Dunstable, Luton and surrounding towns
