Prepare for the Building Safety Levy

The levy applies to new-build residential development, conversions that create new dwellings, and purpose-built student accommodation (PBSA) above a bedspace threshold, wherever the building control application is made in England on or after 1 October 2026. It does not apply in Scotland, Wales, or Northern Ireland, which have their own building safety regimes.

Planning permission does not trigger the levy - it is charged at the building control stage. A scheme with planning permission already in place can still be caught if its building control application is made on or after the start date.

Sites with fewer than 10 dwellings are fully exempt from the levy, regardless of building height or value - this is the main protection built into the regulations for SME developers. PBSA developments with fewer than 30 bedspaces are also exempt. Other exemptions cover social and supported housing built by non-profit registered providers, NHS hospitals, care homes, children's homes, domestic abuse shelters, armed services accommodation, and criminal justice accommodation.

If your scheme sits close to the 10-dwelling threshold, it is worth checking your unit count carefully - the difference between 9 and 11 units has a real cost impact, not just a marginal one.

The levy is charged per square metre of chargeable residential floorspace, including residents' communal space. Rates are set locally and vary widely, reflecting local house prices - from £12.70 per square metre in County Durham to £100.35 per square metre in Kensington and Chelsea, with an average of around £33 per square metre.

If at least 75% of your site is previously developed (brownfield) land, you qualify for a 50% discount on the rate. Confirm the current published rate for each local authority area you build in before you commit to a scheme - don't assume a rate from one site carries over to another.

Remember the levy sits alongside, not instead of, your other developer contributions: Section 106 obligations, the Community Infrastructure Levy where it applies, and CITB/ECITB training levies all continue as normal.

The levy is collected by the local authority acting as the collecting authority for building control, whether your project is supervised by the council, the Building Safety Regulator, or a registered building control approver. You do not pay it upfront when you submit your application - it is payable before the earlier of your completion certificate application (or completion-stage notice) and first occupation of the building.

If you don't pay, the building control authority can withhold your completion certificate or reject your final certificate. For higher-risk buildings going through the Building Safety Regulator's gateway process, this sits alongside - not instead of - your Gateway 2 and Gateway 3 obligations, so plan your programme around both.

The levy adds a cost that lands before you receive sales revenue, which makes it a cash flow issue as much as a budgeting one - particularly for schemes that straddle the start date. If your building control application is made before 1 October 2026, that project is not charged; if it's made on or after that date, it is. For phased developments, each phase with its own building control application may be assessed separately, so a later phase can fall inside scope even if an earlier one didn't.

Model the levy into your development appraisals now, including the correct local authority rate and any brownfield discount, and check whether land acquisition terms for sites you're negotiating should reflect the new cost.

The levy is one part of a wider set of obligations on residential development. Before you commit to a scheme, you still need planning permission (or confirmation that permitted development rights apply), and - for higher-risk buildings - sign-off through the gateway regime up to Gateway 3 completion. Treat the levy as an additional line in your viability appraisal, not a replacement for any of these.