Floor Area Ratio Calculator
Work out your erf's maximum footprint, maximum floor area and the minimum storeys needed to use your full FAR, from your zoning certificate's coverage % and FAR.
Use Calculator →Property Developer Tools, South Africa
Building cost calculators, material estimators and planning tools for SA developers, renovators and DIY homeowners. SA-specific rates and standards.
🕐 All tools updated October 2026
Building & Cost Calculators
Material quantities, costs and estimates calibrated for South African materials, labour rates and provincial pricing.
Building Cost Calculator
Estimate residential construction costs across all 9 SA provinces. Adjusts for build type (new build, extension, renovation) and finish level. Based on ooba's 2026 provincial data (which credits luxliveproperty).
Use Calculator →Brick Calculator
Quantity by wall size, single/double skin. Covers SA brick sizes (maxi, face and stock bricks) with mortar and cement requirements.
Use Calculator →Mortar & Cement Mix Calculator
Bags needed per number of bricks or wall area. Mix ratios for different applications: standard brickwork, plaster and foundations.
Use Calculator →Plaster Calculator
Coverage by wall area and number of coats. Calculates sand and cement quantities for scratch and finish coats.
Use Calculator →Concrete Volume Calculator
Slabs, foundations, columns and driveways in m³. Mix ratios, ready-mix quantities and cost estimates for SA concrete pricing.
Use Calculator →Paint Coverage Calculator
Interior and exterior coverage. Calculates litres needed per coat using Plascon and Dulux SA coverage rates. Includes roof paint estimator.
Use Calculator →Tile Calculator
Tile quantity, adhesive and grout with wastage factor. Covers floor and wall tiling, multiple tile sizes, and common SA adhesive coverage rates.
Use Calculator →Paving Calculator
Paver quantity, sand base volume and patterns: herringbone, stack bond and stretcher bond. SA paver sizes and sand/cement base requirements.
Use Calculator →Roof Sheet Calculator
IBR and corrugated sheet quantities from roof width, rafter length and number of slopes. Includes end-lap allowances and ridge cap length for any SA roof.
Use Calculator →Roof Trusses Calculator
Truss count, a cut list for every member and the timber to buy in stock lengths, with a SANS 10400-L:2020 check on whether a roofer may build them.
Use Calculator →Boundary Wall Calculator
Bricks, mortar, coping and cost estimate for boundary walls. Covers standard single-skin, double-skin and pillared boundary wall configurations.
Use Calculator →Precast Wall Calculator
Panel and post count, plus supply and installed cost, for any precast concrete (Vibracrete) boundary wall. Itemised pricing, not a blended rate.
Use Calculator →Screed Calculator
Cement, sand and cost for traditional sand:cement floor screed, or bags needed for self-levelling compound.
Use Calculator →Rib and Block Slab Calculator
Ribs, infill blocks and topping concrete for a suspended rib and block floor slab, using Rhino Slabs' published spec.
Use Calculator →Looking for property investment calculators?
Rental yield, bond repayment, CGT, FLISP and 30 more, all SA-specific.