How Long Does an HMO Licence Take? Processing Times by Council

"How long will this take?" is usually the second question we get asked, right after cost. The honest answer is that it depends significantly on which council is processing your application — London's 33 boroughs do not operate to a shared timetable, and the gap between the fastest and slowest can be considerable. Two landlords submitting equally complete applications on the same day, in different boroughs, can end up with licences arriving months apart.

Why processing times vary so much

Each council manages its own HMO licensing team, with its own caseload, its own inspection scheduling, and its own internal service standards. A borough running a large, well-established additional licensing scheme with high application volumes may take longer simply due to backlog, while a borough with a smaller or newer scheme may process applications faster purely because there's less queue ahead of yours.

Staffing levels within each licensing team also fluctuate, and a council mid-way through a scheme renewal, when thousands of properties in a designated area reapply at once, can see genuine surges in processing time that have nothing to do with the quality of any individual application. A borough that was fast last year is not guaranteed to still be fast this year.

The general range across London

Across London, published and typical processing times for a complete, correctly-submitted HMO licence application commonly run from around 8 weeks at the faster end to as long as 16 weeks at the slower end. Some councils publish a target timescale on their website; others do not commit to one publicly at all, which makes it harder for a landlord to plan around a hard deadline like a mortgage condition or an existing licence expiry date.

It's worth treating any published timescale as an indicative range rather than a guarantee. Councils are managing live caseloads, and a target of, say, 10 weeks reflects an average across many applications, not a promise for any specific one.

What actually slows an application down

In our experience, the single biggest driver of delay isn't the council's baseline speed — it's an incomplete or incorrect application requiring back-and-forth queries, which can add weeks regardless of which borough you're in. Missing floor plans, an unclear management structure, gaps in the fit and proper person declarations, or unclear fire safety information are the most common triggers for a council to pause an application and write back for clarification, and each round of correspondence can add several weeks on top of the borough's normal timescale.

A complete, accurate submission with all required documentation attached the first time is the most reliable way to land toward the faster end of a council's own range. This matters more than picking an optimistic borough-wide average, because an application that sails through without queries in a slower borough can still beat a query-heavy application in a faster one.

Renewals carry the same risk as a first application

The same variance and the same query-driven delays apply just as much to licence renewals as to first-time applications, and a gap in licence coverage between an expiring licence and a newly granted one carries exactly the same penalties as never having applied at all — there's no informal grace period simply because a previous licence existed. Landlords who leave a renewal until close to expiry are particularly exposed to whichever end of the processing range their borough happens to be running at that month.

Why we recommend applying well ahead of any deadline

Because of this variance, and because a licence can't simply be rushed by asking nicely or paying extra, we recommend building in a comfortable buffer against any hard deadline — whether that's a mortgage condition, a sale completion, or an existing licence's expiry date. Applying at the last plausible moment assumes the borough will process at its fastest published speed and that no queries will arise, which is an optimistic assumption to build a legal compliance position on.

What to do if you're already close to a deadline

If time is already tight, the priority shifts from optimising for speed to eliminating query risk entirely, since a single round of council correspondence can consume whatever buffer remains. Getting the application right the first time — correct floor plans, complete management details, and a clear fit and proper person declaration — matters more under time pressure, not less.

We manage the timeline for you

As part of our service, we prepare a complete, fully-compliant application from the outset specifically to avoid query-driven delays, and we can tell you the typical processing time for your specific borough before you commit, so you know what to expect rather than guessing. Our Additional HMO Licence service is £300+VAT and our Mandatory HMO Licence service is £500+VAT, both handled start to finish so the timeline is out of your hands and in ours.