What We Do

After more than 20 years in the domestic building industry, we spotted a recurring problem, the process. For most customers, every part of their building project is mired in complexity and confusion.


Where does one stage start or finish? Who is responsible for what? And what’s actually causing those setbacks? All too often, there’s a lack of communication and cohesion. All this adds up to frustration, delays and spiralling costs.

We wanted to change all that. So ExtensionPro was founded, driven by a simple ethos:

  • One Company
  • One Point of Contact
  • One Easy Experience

A Seamless Process

We can manage the entire process for you. Or we can step in at any stage in your journey with only a single point of contact.

Ideas & Design

Ideas / Design Icon

We first arrange to meet up to discuss your ideas and plans and to get a good feel for the project. We discuss what realistically can be done and show how we can help bring your vision to life. We’ll then work out a budget costing to give you an idea of the sums involved.


Planning Icon

After we’ve taken on-site measurements, we draft full CAD drawings. Then we submit them to the local planning department. If any planning-related issues crop up at this point, we’ll act as your agent and sort them out – so the whole process carries on running smoothly.

Building Regs

Regulations Icon

Once planning permission is confirmed, we put together detailed construction issue drawings in line with building regulations and specifications. We’ll submit these on your behalf – either to the local authority building control department or a private registered Building Inspector.


Structural Icon

From beam sizes to specialist foundations, we’ll provide you with a full structural calculations document. This is something that building control requires before any work can start. And the same goes for your project, no matter how simple or complex.

Final Costings

Final Costings Icon

Planning, construction issue drawings, full building regulations specification and structural calculations document.. Now that all these boxes have been ticked, we’re ready to hand you a detailed and accurate fixed price quote for the build phase.


Construction Icon

With a payment programme agreed and contract signed, our builders can get going. We’ll project manage the whole construction phase. And we’ll bring every element together with our complete build package – beginning to end.

We don’t stop there. We will provide a full aftercare service, with all of your work fully guaranteed.

Design Packages

Our design packages offer a rough price for the design stages of the process. To enquire about a package or for a more accurate pricing plan, click below and get in touch.

Contact Us



Ideal for exploring the possibilities for development.



Ideal for permitted development and planning application support, where you can supply existing drawings of the property.

& Survey


includes an on-site measured survey and consultation by a member of our design team. Ideal for projects with no existing plans available.



Detailed drawings for the purposes of securing building control approval.

House Illustration

Get in Touch

Wherever you are on your building project journey, the Extension Pro team can help. Call us or fill in your details below, and we’ll get the ball rolling.

(01793) 387205    info@extensionpro.co.uk