Free tools · useful result first

Understand the site, planning route and real project budget

Use the calculators without giving contact details. Email is requested only if you choose to save a report or ask for follow-up.

Planning route

Garden Home Planning Checker

Work through the main Class 3A conditions and receive one of four conservative outcomes. It does not confirm permission or exemption.

Check my garden
Area limits

Garden Size Calculator

Calculate the potential 32–45m² range after existing Class 3 structures and the minimum remaining private open space.

Calculate size
Full project budget

Modular Home Cost Calculator

Add VAT, delivery, offload, foundations, utilities, professional work, Building Control and contingency to the house price.

Estimate cost
Next tool: a Planning Route Finder for existing cabins, conversions, separate sites, family land, Section 5 and full planning projects is in development. For now, use the planning route guide or request a free project-fit call.