The Building Safety Levy: What Changes on 1 October 2026

From 1 October 2026, a new charge attaches to residential development in England: the Building Safety Levy. It arrives quietly, through the building control system rather than the tax return, and it will surprise anyone who prices a project without it. Here is what it is, who pays it, and what it changes in practice.

The Building Safety Levy is a charge on building control applications that provide new dwellings, or new bedspaces in purpose-built student accommodation, including schemes that change the use of an existing building to residential. It applies in England only, to applications made on or after 1 October 2026. Its purpose is to help fund the remediation of historical building safety defects, so the cost of fixing unsafe buildings falls on the development industry rather than on leaseholders.

The liability sits with the developer making the building control application, not with the homebuyer or leaseholder, and the levy is collected by local authorities as part of their role in the building control process. If your project provides new homes, the levy is a line in your appraisal from October onwards, alongside planning obligations and the community infrastructure levy you already know.

There is no single national figure. Rates are set per local authority, and they differ by land type: development on previously developed land pays a discounted rate, while greenfield development pays more. The published rate schedules are the reference, and because the rate depends on where you build and what the land was, two identical schemes in different boroughs will not pay the same levy.

The exemptions are substantial and worth knowing before you assume a liability:

• Small developments: schemes of fewer than 10 dwellings, or fewer than 30 purpose-built student bedspaces.
• Affordable and social housing delivered by non-profit registered providers.
• Care homes, hospices, NHS hospitals and supported housing.
• Refuges for those fleeing domestic abuse, and accommodation for armed services personnel.

And a category that matters to most homeowners: work that creates no new dwelling. An extension, a loft conversion or a refurbishment of your existing home is not what the levy targets.

Three practical consequences follow. First, appraisals for small residential schemes need a levy line and a check against the local rate schedule before land is bought, not after. Second, the 10-dwelling threshold makes scheme size a real decision again: nine units and eleven units are now different projects financially. Third, application quality matters even more, because every application now carries a cost of its own. In the higher-risk building regime, where Gateway 2 applications already carry long assessment times, a rejected application that must be resubmitted loses money twice: once in months, once in fees.

MVV builds and converts residential property across London, from single houses to small developments, and prices work from real project data. If you are weighing a scheme that crosses the levy's thresholds, or planning conversion work where the levy, planning and building control interact, we would rather be in the conversation before the appraisal is fixed than after. Talk to us early and the numbers you plan with will be the numbers you build with.