What should I add to the base price to estimate the total cost?

Estimate, verify before relying on it

Ask the builder for a written cost sheet. Common items are base price, floor rise, car parking, clubhouse and amenity charges, GST, stamp duty and registration, maintenance deposit and legal fees. The mix differs by project, so treat any online estimate as indicative until you have the cost sheet.

Source: FindYourNest editorial checklist (internal estimate, not an official source). Last reviewed 1 Oct 2026. General information, not legal or tax advice.