Halo, I have compiled a list of possible hidden costs for home renovation. I am new to this. Those who are more experienced can help to improve this list. 1. Charge for each additional electrical power point 2. Cost of aircon wiring, re-wiring 3. Quotation at time of signing does not included detailed specs of all materials used eg. acceptable price range for floor tiles given budget 4. Cost of clearing of debris and haulage 5. Renovation permit costs 6. Cost of chemical wash Anymore?