Project Estimate – Vullcan Constructions

About Us
Services
- Building Services
- Architectural Services
Our Projects
Project Estimate

About Us
Services
- Building Services
- Architectural Services
Our Projects
Project Estimate

This is usually the first question our customers ask—and for good reason. To make things simple, we’ve developed a smart and user-friendly extension cost calculator designed to give you clarity right from the start.

Extension costs can vary significantly depending on the size, design, and especially your location within the UK (with London often being higher). Our calculator takes all of this into account.

How much does an extension cost?

Cost Estimator

Step 1: What type of property do you have?

Detached

Flat

Semi

Terraced

Step 2: What type of extension are you considering?

Rear

Loft

Garage

Other

Step 3: How many bedrooms does your property have?

1 2 3 4+

Step 4: Do you need help with any of these services?

Architectural drawings Design and planning advice Help with financing my build Help finding a builder Help finding other professionals No, thank you

Step 5: What is the size of your project?

Small Medium Large

Step 6: What’s your budget?

£15,000 - £25,000 £25,000 - £50,000 £50,000 - £100,000 £100,000+

Step 7: Your contact details

Your Estimated Cost:

Calculating...

This is just an estimate. If you’d like to speak to one of our agents, feel free to call us.

Thank you for using our estimator!

At Vullcan Construction, our roots are firmly in London, and we have many years’ industry experience, so we understand both our city and construction extremely well.