
HOUSE EXTENSIONS
Create more space without moving.
LOCAL BUILDERS IN PLYMOUTH
Trusted Plymouth builders for house extensions, home renovations, new builds, conversions, kitchens and bathrooms across the South West.
OUR SERVICES
From extensions and renovations to loft conversions, garage conversions and general building work, every Plymouth project receives the same care.
VIEW ALL BUILDING SERVICES
Create more space without moving.
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Breathe new life into your home.
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Stylish, practical rooms fitted properly.
HOW IT WORKS
Building work doesn't need to feel complicated. We've made our process clear from the beginning, so you'll know what happens next at every stage.
GET YOUR QUOTE
Send us a few details about your project and we'll arrange the next steps needed to understand the work and provide your quotation.
REVIEW & AGREE
We'll establish what's involved, discuss the proposed work and make sure the scope, costs and expectations are understood before the project begins.
No surprises. No guesswork.SECURE YOUR START DATE
Once you're happy to proceed, we'll confirm the agreed terms, any required deposit and your planned start date.
WE BUILD
With everything agreed, construction gets underway. We'll work through the project while keeping you informed as the build progresses.
Built with care. Managed properly.COMPLETION
Once the agreed work is complete, we'll take you through the finished project and make sure everything included within the agreed scope has been completed.
Project complete. Time to enjoy it.PAYMENTS & DEPOSITS
We believe the financial side of your project should be as clear as the build itself. Any deposit requirements, payment stages and agreed costs will be explained before work begins.
Depending on the size and nature of the project, a deposit may be required when the work is confirmed. Where applicable, the deposit amount and what it relates to will be clearly set out before you commit.
For larger projects, payments may be divided into agreed stages linked to the progress of the work. The payment schedule will be established before the project starts, so you know what is due and when.
Your actual payment schedule will be confirmed as part of your individual project agreement.
Building projects can sometimes evolve once work begins. If you request additional work, or something arises that changes the agreed scope, we'll discuss the implications before that additional work proceeds wherever reasonably possible.
FROM IDEA TO COMPLETION
Every great build starts with an idea. Scroll to watch a rear extension progress from the first architectural lines to a finished new living space.
Whether you need more room for a growing family, a larger kitchen or simply want to transform the way you use your home, every project starts with understanding what you want to achieve.
The footprint, structure, glazing and roof geometry are resolved into a clear buildable plan before work begins.
The patio opens, trenches are excavated and concrete, block foundations and the insulated floor create a solid base.
Block courses rise, structural openings form and the steel and timber roof structure lock the new space together.
Render, roofing, black aluminium glazing, warm interior finishes and the rebuilt patio turn the shell into a home.
A bright, modern extension designed around the way you live — finished, landscaped and ready for the years ahead.
Whatever you're planning, ATC Building Services can help turn the idea into reality.
Rear home extension →
Open-plan kitchen renovation →
Garage conversion →FACEBOOK REVIEWS
recommend ATC
13 Facebook reviews
recommends ATC Building Services
26 August 2026 · ●ATC recently completed major structural work on our property—removing a load-bearing wall, installing an RSJ, and blocking a window. I highly recommend ATC if you are looking for friendly, professional local builders with excellent communication, workmanship, and fair pricing—which is hard to find in Plymouth!
recommends ATC Building Services
20 November 2025 · ●We chose to work with ATC on a renovation project of our property which included all the ceilings replastered, two rooms knocked into one, internal carpentry panelling and a media wall. Brett and team completed the job efficiently, with minimum fuss and all reasonably priced. Would highly recommend.
recommends ATC Building Services
1 July 2025 · ●Reliable and friendly guys, did an amazing job on our fireplace. Couldn’t be happier with the finished look. Thank you very much. Was a pleasure doing business with such a lovely company. ⭐️

LET'S BUILD SOMETHING GREAT
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FREQUENTLY ASKED QUESTIONS
Answers to some of the questions we're most often asked before starting a building project.
ATC Building Services works across Plymouth and the surrounding areas of the South West. If you're unsure whether we cover your location, simply get in touch with your postcode and we'll be happy to confirm.
We undertake a wide range of residential building projects, including extensions, renovations, new builds, kitchens, bathrooms, structural alterations and general property improvements. If your project isn't listed, get in touch and tell us what you have planned.
Yes. We offer free, no-obligation quotations for prospective projects. We'll discuss what you're looking to achieve, assess the work required and provide a clear quotation based on the agreed scope.
Timescales depend on the size and complexity of the project. Smaller works may take a matter of days or weeks, while larger renovations, extensions and new builds will naturally take longer. Once we understand the full scope of your project, we'll be able to provide a more realistic programme and expected completion timeframe.
Absolutely. You don't necessarily need to have everything finalised before speaking to us. We're happy to discuss your ideas at an early stage and help you understand the likely next steps before construction begins.
It depends on the project. Some building work can fall within permitted development rights, while larger or more complex projects may require planning permission and/or Building Regulations approval. We recommend establishing the requirements for your specific property and project before work begins.
Yes, appropriate insurance is an important part of operating professionally as a building contractor. Details of relevant cover can be provided where required before work commences.
Payment arrangements depend on the size and nature of the project. For larger projects, payments would normally be structured around agreed stages of the work rather than the entire project being paid for upfront. The payment schedule and terms will be clearly agreed before work begins.
Changes can sometimes arise once work has started, particularly during renovation projects. If additional work or a change to the agreed scope is required, this should be discussed with the customer before proceeding so that any effect on cost or timescale is understood.
The easiest way is to send us some basic information about your project using our online quote form. Tell us what you're planning, where the property is and your approximate timeframe, and the ATC Building Services team can then get in touch to discuss the next steps.