The Building Safety Levy is live 1 October 2026.
Don’t fail the 5-week assessment.
BSL Prep extracts chargeable GIA from your architectural PDFs, compiles the PDL evidence pack that halves your liability, and produces the submission-ready proforma for your collecting authority.
GIA extraction
Upload architectural PDFs. Claude Vision + pdfplumber extract chargeable residential and communal floorspace per unit, with page citations and source bboxes. Every number is auditable.
PDL evidence pack
Automatically compiles brownfield-register matches, historic OS maps back to 1948, and Land Registry title history into a single PDF evidence pack supporting your 50% discount.
Collecting authority proformas
Templates for 296 English collecting authorities. Populate, generate cover letter, download submission-ready pack.
Who this is for
SME housebuilders (10–500 units/year) managing 3+ live schemes through building control and commencement. Architects, planning consultants, and finance teams responsible for BSL liability.
Every AI claim in BSL Prep is source-cited and stored. The product produces evidence; the collecting authority makes the statutory determination.