Building Cost Calculator

South Africa · 2026 planning model

Building Cost Calculator

Estimate a realistic residential construction planning range from floor area, province, finish level and project complexity. It is a budgeting tool, not a contractor quotation.

Gross floor area

m²

Include rooms, internal walls and covered areas that form part of the build.

Province

Project type

Finish level

Home form For a second-storey addition, the project-type adjustment takes priority.

Site complexity

Contingency allowance

VAT planning Only add VAT if the prices you are comparing exclude VAT.

Project-cost allowances

Add a 10% planning allowance for professional, design and approval costs Add a 5% allowance for basic external works / connections

These are planning allowances, not regulated fee quotations. Land, finance costs, major retaining works, pools and loose furniture are excluded.

Planning estimate only. A quantity surveyor, architect/engineer where required, municipality and registered builder should confirm the final scope and price. Public benchmarks differ in whether VAT and professional fees are included, so compare quotations line by line. Market model reviewed 15 August 2026.