A void period — the time between one tenancy ending and the next tenant moving in — is the single biggest immediate cost in property investment. At the average UK private rent of £1,383/month in May 2026, a four-week void is over £1,250 of income that never comes back. Across a portfolio, the numbers multiply fast.
The good news is that most void periods aren't caused by bad luck or bad location. They're caused by fixable mistakes in how landlords market, price, and handle applications.
Mistake 1: Overpricing on launch
The most common and most expensive error. Landlords price high because they know they can always come down — but the data says that properties that launch at market rate let 40% faster than those that sit for two weeks and then reduce.
Rightmove and Zoopla both track days-on-market by initial price versus final let price. Properties that let within the first two weeks of listing almost always let at or close to asking price. Those that reduce after two or three weeks of sitting tend to let at 4–8% below asking — and still take longer in total.
How to price right on day one
Check the current let properties on Rightmove in your postcode sector — specifically the ones marked 'Let Agreed' in the last 30 days. That's your real comparables. Listed price is what landlords want; let-agreed price is what the market is paying. Price within 5% of the median let-agreed figure and you'll receive enquiries within 48 hours in most UK markets.
Mistake 2: Poor photos and incomplete listings
Renters in 2026 make their shortlist based almost entirely on photos and the listing description. A property with dark, narrow, or poorly composed photos receives dramatically fewer enquiries than an identical property with professional photography.
Rightmove's own research found that properties with professional photos receive up to 73% more enquiries than those with amateur photography. A professional property photographer costs £80–£150 and adds no measurable time to the marketing process. It's among the highest-ROI actions a landlord can take.
What makes a strong listing:
- Professional photography — wide-angle but accurate, well-lit, furniture moved for unobstructed sightlines
- Floor plan — a significant portion of renters filter out properties without one
- Complete EPC rating displayed — legally required and increases click-through
- Bills included or excluded clearly stated — ambiguity generates avoidable enquiries and drops quality leads
- Council tax band listed — renters factor this into total cost
- Transport links listed with walking times — tenants in every city prioritise commute time
Mistake 3: Slow response to enquiries
In competitive markets, the landlord or agent who responds within an hour converts a far higher proportion to viewings than one who responds the next morning. Speed matters because serious tenants often enquire on several properties at once.
If you're self-managing, set up push notifications for Rightmove and Zoopla enquiries. If you're using an agent, ask explicitly about their response-time SLA before you appoint them. Some agents don't call back the same day — and that's a void period in the making.
Mistake 4: Rigid referencing that filters out good tenants
Standard referencing templates exclude a significant share of the market: self-employed tenants, international renters, recently arrived workers, those without a guarantor. Many of these applicants are entirely creditworthy — they just don't fit the template.
Landlords who are willing to consider alternative income evidence, institutional guarantors, and legally permitted upfront structures access a much larger pool of applicants. They typically fill faster because they are not filtering out good tenants solely for being non-standard.
Mistake 5: Waiting too long to start marketing
Marketing should start 6–8 weeks before your current tenancy ends — not after the tenant has left. Most tenants are willing to allow accompanied viewings on two or three days per week in the final months of their tenancy. Properties that go live 6 weeks before vacancy can have a signed tenancy before the previous tenant leaves.
| Action | When to do it | Typical time saving |
|---|---|---|
| Book professional photographer | 8 weeks before vacancy | Eliminates a common bottleneck |
| List on Rightmove and Zoopla | 6–8 weeks before vacancy | 10–14 days average |
| Begin referencing shortlisted applicants | 4–6 weeks before vacancy | Avoids post-vacancy delay |
| Issue tenancy paperwork | 2–3 weeks before start date | Tenant moves in day 1 of vacancy |
The landlords with the lowest void periods are not lucky — they're systematic. They treat every tenancy end as a project with milestones, not an event that happens when the keys come back through the letter box.