There is a line between light and heavy refurbishment, and it moves the lender, the price and the process. Works costing more than around 50% of the property's current value, anything structural, or a change of use take a scheme into heavy refurbishment: staged drawdowns, a monitoring surveyor, and a loan sized on the finished value as well as today's. Further on there is a second line. Creating new units, or works approaching 60% of gross development value, is development finance, whatever the deal is called on the enquiry.
The valuation works differently too. A property worth £300,000 today that will be worth £550,000 after a structural conversion is not a 300 or a 550 case; it is both, and the facility is sized against each at different stages. Lending purely on current value understates the scheme, and lending purely on end value ignores where you are standing today.
What sinks these applications is almost never the asset. It is the schedule of works. 'Full refurb, £80,000' is not a schedule, and a lender that cannot see line by line what is being done, by whom and when will either decline or price for the uncertainty you have handed them.
A schedule of works a lender can underwrite
Line by line, with a contingency of 10% to 15% of build cost stated explicitly rather than assumed. Above roughly £500,000 of build cost expect a quantity surveyor's cost review, so it is worth writing the schedule as though one is coming.
Both values, at the right moments
Current value sets the day one advance and end value sets the total facility. We make sure the valuation is instructed on the right basis, because a report addressing only one of them will not support the structure.
Drawdowns and the monitoring surveyor
Works are funded in arrears against inspection. Monitoring surveyor fees are yours to pay, so visit frequency is a cost line and worth negotiating rather than accepting.
Planning and change of use resolved first
A conversion without its consent in place, or with conditions still to discharge, is a different risk and a different price. Knowing which conditions are outstanding before you apply is the cheapest work in the process.