Home Extensions

Find out how much your home extension is going to cost by contacting us today. We offer a detailed quote with a pure focus on quality and excellence. 

We offer a free quotation service

Home Extension Costs

From a very high level overview, a home extension cost depends on a few factors. First thing would be the size, single storey or double storey is usually the most popular. The we have to look the existing structural set up and see if there are any structural amendments needed.

We then would look at the interior itself, after your consultation with our interior design team, we would look to provide the absolute best finish. Take a look below at one of our many home extension project carried out in Stevenage. 

Accredited Home Extension Building Contractor

Our home extension building services are second to none. Over 20 years of experience, with experience to give you full confidence.

  • Detailed Quotations
  • All Work Guaranteed
  • Electrical & Plumbing Included
  • Structural Amendments Included
  • Fixed Price Policy 
  • We Will Meet Deadlines
  • Transparent Service & Advice
  • Full Assistance With Planning & Drawings

The benefits of getting a home extension are simple, more space more value added to property.

We allow our customers to get involved in the planning and design stages. We only use the highest most long lasting materials. 

We can help you find out how much your home extension could cost, as a local builder we welcome you to offices for discussions. 


All of our projects go through a professional consultation, detailed and communicated with transparency.


We then look to start the design and planning process. Avoiding disruptions during building or work.


Once we are both satisfied we will being our work in building or renovation. Our focus is quality and perfection.

Get a free quotation

Feel free to call us or submit a request if your thinking about hiring a local home extension builder use our form below. Visit us in Stevenage our office which is open to all of our clients for planning, design discussions or a general quote. 

Why Choose Us?

Nationserv is a local builder based in Stevenage. We offer a fixed price quotation promise, ensuring transparency and confidence when using us. From small building repairs to full house builds we offer free no obligation quotes.