22/06/2026
A 4-week void on a £1,500 rental costs you £1,500. Wrong.
It costs you £1,500 in rent, £200 in council tax, £100 in standing charges, plus tenancy fees and your own time.
Here's how to price a void properly.
Many landlords think of voids as lost rent. They are. They're also a lot more.
The full cost of a 4-week void on a typical £1,500 a month rental looks like this.
£1,500 in lost rent (the headline cost).
£175 in council tax. The landlord pays it while the property is empty.
£100 in standing charges for gas, electric, water.
£200 in re-let fees. Agent finds a new tenant.
£75 in inventory and check-in costs.
£100 to £400 in light refurb. Clean, repaint, replace worn carpet at threshold.
£50 to £100 in marketing. Photos, listing fees, agent admin.
That's £2,200 to £2,500 for one void on one rental. The headline rent cost was £1,500. The real cost is 50% to 65% higher.
Now run that across a portfolio of ten houses, with an average void of three weeks a year per house.
The real cost runs into £20,000 to £25,000 a year that nobody is modelling.
Many cashflow forecasts model rent loss only.
They miss the rest.
The portfolio looks more profitable on the spreadsheet than it is in your bank account.
How to reduce void cost.
Pre-let.
Start advertising 4 to 6 weeks before tenancy end.
Aim for a same-day handover.
Use a fixed-fee letting agent rather than a percentage one if you're high-turnover.
Build a refurb pack.
Standard kit you reuse on every changeover.
Same paint, same carpet, same fittings.
Keep one decorator on retainer who can do a 24-hour turnaround.
The portfolios with the lowest void costs aren't the ones with the best tenants.
They're the ones with the best operational processes.
If you've had a long void recently and want help working out what it cost you, drop me a message.
The real number is almost always worse than people realise.