Knock down rebuild vs renovation loan: which is better financed?

For cosmetic or non-structural work, most lenders will increase your existing home loan or release equity up to 80% of the current value with no more paperwork than a standard refinance. You receive the money as a lump sum, pay the tradespeople yourself and there are no stage inspections. This is faster and cheaper than a construction loan.

Once the work is structural, involves a licensed builder under a fixed price contract, or exceeds the lender's renovation limit (commonly $100,000 to $250,000 depending on the lender), it becomes a construction loan. The lender values the property as if the renovation were complete, releases funds in stages, and the same demolition-style exposure applies if walls are coming out.

A knock down rebuild is always a construction loan. There is no top-up option because the security is being demolished. The lender values land plus contract as if complete, wants a fixed price contract and home warranty insurance, and pays the builder in stages. The upside is that a new home usually values well against its cost, whereas major renovations of older houses often cost more than the value they add.

Lenders are more comfortable with a new build from a volume builder than with a large renovation of an old house. New builds have predictable costs, standard contracts and clear on-completion values. Renovations of period homes have more variations, more cost overruns and valuers are harder to convince. If your renovation quote is more than half the cost of a comparable new build, the specialist conversation usually shifts to a knock down rebuild.