No1 Extensions

From the initial idea, right through to the planning and development, No1 Extensions will take care of everything.

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House Extensions Specialists Covering Manchester & The North West.

Enhance your living space with a beautifull house extension. Our expert knowledge and quality workmanship have helped us gain our excellent reputation in Manchester and throughout the Northwest.


    At No1 Extensions we truly care about our customers and their house extension. It can be difficult choosing the right company for your project, so we’ve compiled a list of reasons that truly set us apart from the competition.

  • We’re a local company based in Manchester so you can trust that it is us completing your project and not a national company who just hire sub contractors.
  • We have over 10 years experience in house extensions across Manchester and the Northwest with a long list of happy client testimonials.
  • Asbestos trained, ​Asbestos kills if not dealt with in the right manner, especially if it’s disturbed the second hand dust will get on to your clothes, furniture etc.
  • We take care of everything under one roof to give you peace of mind. Our easy to follow process will guide you through all the stages of completing your house extension, from design and planning, to building regulation approval.
  • All our team are fully qualified in all aspects and are trained to the highest standards. We employ all our team direct and only have people that are as passionate about building as us.
  • Each project is different which is why we work with you to match your individual style and requirements. Every house extension is tailored to suit your budget, style and requirements to ensure you get the house extension you want.
  • We are reachable 7 days a week.
  • We don’t employ high pressure salesman. When you contact us you will be greeted by our office manager and you will meet with Matt, the company directors who will discuss your initial idea with you and talk the the options available and how we work. We never expect a decision from you when we meet.
  • All our work confirms to building regulations.
  • We will always leave your property in the same tidy condition as we arrived and all of our team and respectful and courteous.


Welcome to No1 Extensions, we are the leading specialist in house extension in Manchester and throughout the North West of England.

Our specialist team are all CRB checked with proof upon arrival, asbestos trained, highly experienced and will professionally manage your garage conversion project from beginning to end. We deal with everything from planning permission (if needed) to building regulations and design and make sure your house extension is exactly how you envisioned.

We understand that house extension project differs from customer to customer, and requirements will never be the same, which is why we meet with all customers to discuss your options and help you design your perfect new living space. If you are struggling for ideas on what to turn your extra space into, then have a look through some of our house extension ideas below.


House extension are a great way to create more space in your home and make better use of your new extension. You won’t believe the uses they can be put to; from spas and games rooms to workshops and offices.

BBC’S I Want My Own Room

Back in 2011 Matt was approached by a local well established building firm to help convert a garage into a music studio for the BBC show I Want My Own Room. This was a challenging proposition as the job had a deadline and a garage had to be fully converted within 48 hours.

Not only was there a short time to complete the job with only 6 people, there were many inevitable pauses required while working on a TV set. In the 48 hours the room had to be cleared, new floor fitted, rendered, insulated, new windows fitted and finally decorated. The project was well organised with different tradesmen working alongside each other to complete the job. Matt and Brian put a total of 60 hours in between them to help complete the job, on time and to an high standard.

General Questions

If you have a question that’s not listed here please don’t hesitate to contact us, we’re always here to help. We want you to be happy when you choose a company to do your house extension so we’ve complied a list of commonly asked questions.

We have completed many house extension into kitchens, bedrooms, offices, and kid’s playroom, “granny flats” with en suits… the list is endless. We can show you our portfolio and discuss your needs. We will work with you to get what you want.
It all depends on your requirements, for example a small extension will cost less than a big extension. Cost will increase with extras such as an en-suite bathroom or if you wish to have a kitchen designed and fitted.
According to property experts, a house extension does not only provide extra living space but can add up to 10% to the value of your home.
A single integral house extension takes on average 14 working days. A double house extension will take on average 28 working days. These may change due to your requirements.
In the majority of cases, the work involved in a house extension will be classed as permitted development. However, if you live in a Conservation Area, a location where development can be restricted to protect the appearance of the surroundings, or on a new estate with strict guidelines, it’s worth checking what’s allowed- we will take care of this for you.
You’ll need building regulations consent and sign off for the various elements of your build, as with other home alterations. We will check that your local council is happy with your plans before starting work and organise appointments for each stage of the job. Alternatively we will use the private building control firm we use called Compagna.
We take a deposit in the region of 15% to 20% of the overall job value. We will then advise you of a payment schedule where you pay a certain percent at different stages through the job. We will provide the breakdown before the contracts are signed. We take the final payment once you are 100% satisfied with our work.
We take a deposit in the region of 15% to 20% of the overall job value. We will then advise you of a payment schedule where you pay a certain percent at different stages through the job. We will provide the breakdown before the contracts are signed. We take the final payment once you are 100% satisfied with our work.
Once you have agreed to a start date we will send over a copy of the terms and conditions and a contract. Both parties will sign and both have a copy.
We provide a 10 year guarantee on all our work. A certificate will be provided on completion of the job, along with any other certificates such as electrical certificate or gas certificate.
We will always have an ongoing job which may be local to yourselves. We highly recommend you go and speak with our past clients.
Yes, if it is still in production (or remaining stock can be sourced from somewhere). If not we will get you the very best alternative match. We use a professional brick matcher, who will come to site prior to us starting the job. They will provide a few brick samples for you to choose from.
We put down a visqueen sheet and cover the drive with plywood to protect the drive from skips and general building work. We protect the internal by using dust sheets. We guarantee to keeping the mess on site to a minimum and leave the in the condition it was when we first arrived. We understand this is your home so will cause as little disruption as possible.

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Unit 1, Victoria Works, Lodge Lane, Dukinfield SK16 5HY



07907 872361

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