Purley Architects

Single Storey Extension Cost Calculator

Single Storey Extension Estimator

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Steph Fanizza, Architectural Design & Team Manager

Use this cost calculator to generate a quote for your extension or conversion plan

It takes less than 1 minute!
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How to use our single storey extension cost calculator

Step 1. Open our single storey extension cost calculator below!

Step 2. Enter your property type and approximate area of your extension. Calculate this by multiplying the width and depth of your ideal extension.

Step 3. Take our survey to get an estimate of your single storey extension!

Step 4. Consider finer elements, such as how many skylights you want and if you need bifold doors!

Step 5. Any specific spaces such as a new kitchen or utility space? Check the boxes of what you’re after and your ideal quality.

Step 6. Your single storey extension cost calculator UK estimate is ready! Click to reveal the estimated cost.

*Please note that this estimate does not include full interior specifications and does not include VAT. The final figure may also vary depending on the time of the year and costs of materials.

What does our single storey extension cost calculator UK include?

Our single storey extension cost calculator UK takes into account the following items:

  • Single storey extension footprint (width x depth).
  • The type of extension (rear, side, loft, single or double storey etc.)
  • The style of your property (detached, semi-detached or terrace)
  • Roof type (flat roof, mono-pitched, dual pitched or crown roof)
  • The number of skylights & size of bifold/sliding doors
  • Key spaces and their quality, including kitchens, bathrooms and utility spaces.

Our single storey extension does not include:

  • Full interior refurbishment/specifications
  • Finishes & fixings
  • Bespoke joinery or other bespoke elements
  • Unique structural designs.

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Cost of Single Storey Extension Calculator 2024

Using our single storey extension cost calculator has never been easier!

Simply select the type of renovation or extension project you are looking to complete, select your preferences from our set of questions, tailor your estimate by defining any specific rooms you are looking to add or renovate & their quality, and find out your immediate estimate – all within 60 seconds!

When considering a single storey extension, cost can be a defining factor of your final decision. Start the process today with our single storey extension cost calculator so that you can begin this exciting journey with confidence that it is going to be financially feasible from the outset.

Upon completing our extension cost calculator, you are invited to speak with one of our advisors to discuss your ambitions and project in more detail. Contact us today to get the ball rolling on your exciting project!

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Steph Fanizza, Architectural Design & Team Manager

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