Garden & Granny Annexes — UK Built
We design, build, and install garden annexes and granny pods across the UK. Full turn-key service — from planning permission to handing over the keys. No subcontractors. Ever.
You've found the solution — a garden annexe means independence for your family member and peace of mind for you. But then the questions start.
Who handles planning permission? Do you need a separate architect? Will you be managing multiple contractors, chasing groundworkers, electricians, and kitchen fitters one by one? And how do you know the company you choose actually builds what they show in the brochure?
For a project that costs between £50,000 and £113,000, getting this wrong isn't an option. The stress of a poorly managed build — delays, quality issues, a team you never see — can turn what should be an exciting project into a nightmare.
That's exactly the problem we were set up to solve.
Our 16 in-house specialists handle everything — design, manufacture, groundworks, installation, plumbing, electrics. One team. One point of contact. Complete accountability.
Lawful development certificates, planning permission, groundworks, service connections, build, fit-out — we manage it all. You don't need to hire anyone else or coordinate a single thing.
Every annexe is manufactured in our UK factory. Modern insulation, sustainable materials, energy-efficient design. Four ranges, 24 sizes — built to the same standard in our workshop before arriving in your garden.
"We were enormously impressed with the design, construction and installation process from start to finish. Everyone who worked on the project was diligent, respectful, thoughtful, friendly, hard-working and meticulous, and every query we had was dealt with quickly and efficiently. The building itself is absolutely perfect for our needs — I wouldn't hesitate to recommend Garden Annexes."
Neil Ford
Cambridgeshire
"The whole team at Garden Annexes are just phenomenal — from day one we were cared for, supported, and they understand how stressful the whole process is when you are caring for a relative who is unwell and making significant life-changing decisions. The quality of their service is unparalleled. We are absolutely delighted with our annexe, and I would highly recommend the GA team — you won't find better."
Emily Cherry
Cambridgeshire
From a compact 4.4m × 3.3m guest suite to a spacious nearly 10m-wide two-bedroom home — every size includes kitchen, bathroom, VAT, delivery and installation.
Modern European design. Great entry-level option for every generation.
Apartment-style design. Large windows, modern open-plan living.
Vaulted ceilings, classic proportions. Timeless British character.
Traditional barn annexe with exposed rafters. Rustic warmth, modern build.
All prices include kitchen, bathroom, VAT, delivery and installation. Site pack (base & service connections) quoted separately after free site survey.
Four steps. One team throughout. No handoffs to subcontractors. You know who's doing what, and when.
We visit your garden, assess the space, and tell you exactly what's possible — sizes, access, service connections. No obligation, no pressure.
We handle lawful development certificates and planning permission. Your designer works with you on layout, windows, doors, kitchen position — personalised to your garden and your family's needs.
Your annexe is manufactured in our UK factory, then our in-house team installs it in your garden — groundworks, services, fit-out. Typically 4 weeks from installation start.
We hand over a fully decorated, move-in ready home. Kitchen fitted, bathroom done, electrics and plumbing connected. Ready to live in from day one.
"I cannot praise this company enough — they are outstanding. High quality workmanship. Professional team of workers so helpful and kept me in touch with progress. Thank you so much for providing my perfect little end of garden home. I love it more than I ever dreamed I would. What a great company you are. Highly recommend Garden Annexes if you're looking for a quality affordable annexe."
Karen Greenway
Oxfordshire
"This wasn't just a building project. It was about moving my mum from our family home of almost 50 years into a 1-bed annexe in my sister's garden. From digging the foundations to handing us the keys, it took just 4 weeks. The team took care of absolutely everything — the lawful development certificate, design, build, plumbing, electrics, kitchen and bathroom. We didn't need to hire anyone else. My mum has now been living in her annexe for over a month, and she is so happy there. It already feels like home."
Monica
Peterborough
Most garden annexes qualify for permitted development — meaning no full planning application is needed. We apply for a Lawful Development Certificate on your behalf, which gives you formal confirmation that your annexe is legal. We handle this as part of the turn-key service; you don't need to engage a planning consultant separately.
Installation typically takes around 4 weeks from when our team arrives on site. The full process — including design, planning, manufacture and installation — varies by project, but we'll give you clear timelines at your free site survey. We keep you updated throughout so you always know what's happening and when.
Everything. Lawful development certificate, planning permission (if required), groundworks, service connections (water, electricity, drainage), manufacture, delivery, installation, plumbing, electrics, kitchen, bathroom, and final decoration. You don't need to hire anyone else — when we hand over the keys, it's move-in ready.
We offer 4 ranges with 24 sizes in total. The smallest (the 430 models) has an interior footprint of 4.4m × 3.3m — compact enough for most standard gardens. The largest (945 models) reaches nearly 10m wide. Our free site survey will confirm exactly which sizes are possible in your space, taking account of access, boundaries, and service routes.
Yes. We have three annexe models on display at our site in Bury St Edmunds, available to visit by appointment. Seeing one in person — and understanding the quality of the build — is often the moment people feel confident to proceed. Contact us to arrange a visit.
A local builder will likely subcontract groundworks, plumbing, electrics, and joinery to separate trades — meaning you're coordinating multiple contractors, absorbing the risk of delays, and relying on quality control you can't fully oversee. Our 16 in-house specialists do everything. One team, one point of accountability. We've completed 200+ homes to the same standard. A local builder has done this once, maybe twice.
See all four ranges, full size options, and indicative pricing. No obligation. We'll also include details on our free site survey, so you can see exactly what's possible in your garden.
