Extension Cost Estimator
Sense-check a realistic budget band for a rear, wraparound or double-storey extension before booking a site survey.
- Build-rate guide
- Specification uplift
- Structural allowance
Fill out the form below and a member of our team will get back to you to discuss your requirements.
Use these tools to pressure-test budget, programme, drainage symptoms and survey readiness before you commit to site works. They are designed to give homeowners a practical first pass, not generic filler numbers.
Start with the tool that matches your current uncertainty. Each one gives you a faster path to the right next conversation, whether that is cost planning, fault diagnosis or survey preparation.
Sense-check a realistic budget band for a rear, wraparound or double-storey extension before booking a site survey.
Estimate groundwork scope, sub-base quantities and an early budget range for paving, porcelain, resin or gravel installations.
Identify likely drainage failure points, urgency level and the first investigation steps based on the symptoms you are seeing on site.
Map a practical pre-construction and build sequence so you can understand design, approvals and site preparation before work starts.
Pull together a sharper project brief so your survey request is clearer, faster to review and easier to price accurately.
These tools are there to help you ask better questions. Once you have a rough range or clearer diagnosis, we can review the actual site conditions and turn that early thinking into practical advice.