BRR explained: buy, refurbish, refinance.

BRR is the engine room of most UK portfolio building. The idea is simple: buy below potential, add value, then refinance against the new value — so the same pot of cash recycles into the next deal instead of being locked in the last one.

Step 1 — Buy

BRR properties are usually bought with bridging or cash, because the best candidates — tired, unmortgageable, fast-completion — don’t suit a standard mortgage. A bridge typically advances the lower of 90% of the price and 75% of the value, with fees and interest rolling up to be cleared at the refinance.

Step 2 — Refurbish

The works are what create the value, and lenders will often fund them through a drawdown facility — staged releases as the project progresses, with interest only on the drawn balance. The discipline is matching spend to uplift: £1 of refurb should create comfortably more than £1 of end value.

Step 3 — Refinance

On completion of the works, a term lender values the property and advances around 75% of the new value. That mortgage clears the bridge (loan, fee and rolled interest); what’s left over is your cash back. Two checks decide whether the plan holds: the valuation itself, and the ICR stress test — if the rent can’t support 75% of the new value, the rent caps the loan, not the value.

The maths, worked

Buy at £200,000 with a £150,000 bridge; £40,000 refurb; end value £280,000. Cash to acquire (deposit, SDLT, legals, fees) is about £64,800, plus the £40,000 works — call it £104,800 in. The refinance at 75% is £210,000; after clearing the bridge (£163,800 with rolled interest) about £46,200 comes back, leaving £58,600 in a property worth £280,000that also cashflows. Push the end value or buy better and the cash-out climbs towards everything you put in — the famous “all money out” deal.

Where BRR goes wrong

Optimistic end values, refurb overruns, and bridges that outlive their term. All three are modelling problems before they’re site problems — which is exactly why you run the whole structure before you offer, not after you’ve exchanged.