A qualifying lease is a specific kind of long residential lease that gets extra legal protections under UK building-safety law, especially around certain service charges and remediation costs. In simple terms, it is usually a lease of a single dwelling in a relevant building, with the tenant meeting conditions set by the Building Safety Act 2022.

Quick Scoop

Under the Building Safety Act 2022, a qualifying lease generally means:

  • It is a long lease of a single dwelling in a relevant building.
  • The tenant is liable to pay a service charge.
  • The lease must meet the Act’s detailed eligibility rules, including conditions linked to who held the lease and how the property was used at the relevant time.

Why it matters

Qualifying leaseholders can benefit from stronger protection against some building-safety related costs, which is why the term matters so much in leasehold reform discussions. Recent leasehold reform coverage also notes that qualifying leaseholders of flats continue to have rights to lease extensions under the current framework, while broader reform remains in flux in 2026.

Plain-English example

If someone owns a long lease on a flat in a relevant building and meets the statutory conditions, that lease may be “qualifying,” meaning the leaseholder may be shielded from some of the financial burden tied to historic building- safety issues.

If you want, I can also give you:

  • a one-line definition ,
  • the exact legal criteria in plain English, or
  • a checklist to see if a lease qualifies.