Free planning tools
Measure first. Ask better questions.
Practical calculators and checkers for Surrey groundworks, extensions, drainage, paving and site surveys.
Use a calculator or checker to organise the first questions, then let a site survey replace the assumptions.
Groundworks Cost Calculator
Build an early planning range for excavation, foundations, drainage and concrete. This is a scope-shaping tool, not a quotation.
Open tool 02 / Planning toolExcavation & Muck-Away Calculator
Estimate in-ground volume, bulked spoil and an indicative number of collections from simple site dimensions.
Open tool 03 / Planning toolExtension Cost Estimator
Explore an early extension budget by floor area, storeys, finish level, access and structural complexity.
Open tool 04 / Planning toolPatio & Driveway Materials Calculator
Estimate surface area, excavation, sub-base and paving quantities before you request a site-specific quotation.
Open tool 05 / Planning toolDrainage Problem Checker
Turn symptoms into a clearer first brief and identify whether inspection, maintenance, levels or new drainage may be the next step.
Open tool 06 / Planning toolConstruction Project Planner
Create a practical starting checklist for an extension, groundworks, driveway, drainage or structural project.
Open tool 07 / Planning toolSite Survey Brief Builder
Build a concise project brief with the photos, measurements, constraints and approvals a contractor needs to price accurately.
Open tool 08 / Planning toolGroundworks Quote Comparison
Compare two or three quotations against the same scope. Identify different inclusions, allowances and unanswered questions without ranking contractors.
Open tool 09 / Planning toolSite Access Planning Checker
Record access dimensions and route constraints to prepare a better contractor brief. No machine-fit verdict, safety approval or personal information required.
Open toolFree printable resource
Make the first site survey count.
Use the A Jones project-readiness checklist to gather photos, dimensions, access details, site constraints and approval questions before the first visit.
The next useful step
A calculator cannot see your site.
Use the result to prepare, then share photos, access details and drawings so the site survey can replace assumptions.