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Let Us Transform Your Space

If you want to expand your living space at a fraction of the cost of moving home, then a stylish, high-quality extension could be the answer. Whether you’re looking for a single or double-storey extension, loft conversion or garage conversion, we can do it all at Thomas George Johnson. Our services are competitively priced and never compromise on quality. No matter the size, complexity, or location of your extension project we can help. Contact us for a FREE quote today!

What does an extension include?

Here at Thomas George Johnson, we are committed to delivering a hassle-free experience. Whether you are a residential or commercial client, we have the experience required to design and construct an extension or conversion that is within budget, time frame and to the highest possible standards.

We provide a complete project management service for extensions and conversions including:

  • General planning.
  • Design and access statements.
  • Planning policy research and advice.
  • Preparation of Building Regulations applications.
  • Detailed drawings to a measured scale.
  • Ground works and foundations.
  • Roofing and flooring.
  • Plumbing, electrics, gas installation, and more.
  • Plastering, external cladding/rendering, decorating and more.
  • Landscaping and driveways.
  • And much, much more.

We provide a service that will take you from quotation to completion with quality results. We look forward to being a part of your next project, so please don’t hesitate to contact us for a FREE quote.

How does it work?

Get in touch with us

Contact us to arrange a meeting with our team. We will visit at a time that suits you to fully discuss your project plans.

FREE Quotation

We will provide you with a FREE quotation and detailed drawings/calculations of your extension or conversion. We advise you to check these and make any changes you require.


Once you have accepted the quotation, we will arrange a time to visit your site to begin construction. We will fully complete the shell of your extension according to the agreed plans and your satisfaction.


Once the shell of your extension is completed, we will undertake interior work and external finishing. This includes rendering/cladding, electricals, plumbing, plastering, decorating and much more.


Once we have completed your extension or conversion, all that’s left for you to do is enjoy the results! We will be on hand throughout the whole process if you have any queries.

Why work with us?

Complete Project Management

We provide a fully comprehensive service that takes you from quotation to completion with ease. We are on hand throughout the whole process if you have any queries.

FREE Quotes

We offer FREE no-obligation quotes on all our services. So from beginning to end, you can rest assured there are no hidden costs when you come to us.

Range of Services

We offer an extensive range of services including New Builds, Extensions, Decorating, Roofing, Flooring, Landscaping, Remodelling and much more!

If you’d like to work with one of the UK’s leading construction companies, please don’t hesitate to contact us today!