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Single storey, double storey, rear, side and wrap-around
Extensions calculators
Work out what an extension should cost in Belfast and across Northern Ireland, including professional fees and contingency.
Other calculators
Loft & Conversions
Lofts, garages, garden rooms and outbuildings
Insulation & Energy
Loft, wall, floor and roof insulation with U-value modelling
Materials
Bricks, blocks, concrete, mortar, fencing and paving quantities
Driveways & Outside
Driveways, patios, decking and garden walls
Renovation
Kitchens, bathrooms, roofs, windows and rewires