Will my mortgage lender accept an EJL?

Most do for minor matters — typically lenders' valuation reports flag 'structural movement/cracks/alterations' requiring 'structural engineer's report'. EJL fulfills this for minor items. Larger structural concerns (subsidence, major cracks, missing structural members): full structural report £450–£1,850 instead.

Can EJL replace a structural survey?

No — different scope. Structural survey is full inspection + report on whole building; EJL is targeted opinion on specific element/question. RICS Building Survey £950–£2,500 covers whole-building structural assessment for purchase; EJL £250–£950 covers narrow specific question.

What's engineer's liability on an EJL?

Professional Indemnity covers EJL — engineer's PI typically £2-10M cover. EJL based on visual inspection + sound professional judgement; limitations + assumptions stated in letter limit scope of opinion. Engineer carrier still significant liability — hence cautious EJL writing + refusal to issue EJL where full design needed.

Engineering Judgement Letter London 2026 | Builderr

What Is an Engineering Judgement Letter for a London Renovation?

Engineering Judgement Letter (EJL) is a qualified Chartered Engineer's signed letter confirming the structural adequacy of a building element or proposed alteration based on professional judgement + visual inspection — without full design calculations. Used for: removing minor non-loadbearing partition, sense-check of existing structure, retrospective sign-off, lender/warranty requirement. Fee £250–£950 typical. Accepted by Building Control + most warranty providers; not substitute for full design where calcs required.

When EJL is appropriate

Minor non-loadbearing partition removal: confirmation that wall is not structural (typically by visual inspection + tap-test + loft visit confirming no joist run above + no beam landing). EJL confirms; no calcs needed. Sense-check of existing structure during sale or remortgage: engineer inspects + confirms structure sound + foundation typical + no significant defect. Retrospective sign-off where previous work done without calcs (selling property, lender requirement, Building Regs regularisation): EJL can support regularisation application — engineer inspects + confirms compliance achieved. Lender condition: many UK mortgage lenders accept EJL on minor structural matters (Halifax, Nationwide, Barclays panel). Confirmation that adjacent works don't compromise existing structure (e.g. neighbour's extension — confirm party wall integrity).

When EJL is NOT appropriate

Beam/column design: new openings cut through loadbearing walls need full structural calcs (engineer's Eurocode design), not EJL. Building Control will reject EJL where full design needed — submitted calcs + drawings mandatory for any new structural member. Loft conversion structural design: full design required (joists, beams, dormer framing, roof modifications) — EJL insufficient. Extension foundations: full design required to Eurocode 7. Underpinning: full design required. Wall removal where any doubt about loadbearing status: full design required. EJL is for sense-check + verification — not for design of new structural elements. Misuse leads to liability exposure for engineer + project risk.

Format + cost

Format: 1–2 page letter on engineer's letterhead, addressed to client/Building Control/lender as required. Content: site visit date + description, member/element inspected, condition assessment, professional judgement statement, limitations + assumptions, engineer signature + qualifications (Chartered Member of IStructE or ICE, CEng status, PI insurance certified). Cost: £250–£950 typical including 30-60 min site visit + report writing. Premium engineers (top-tier London firms, complex situations) £450–£1,850. Turnaround 1–3 weeks typical. Builderr offers EJL service via panel of 4 Chartered Engineers for minor enquiries — useful for: 'is this wall structural before I knock it through?' + similar quick clarifications. Saves £1,500–£3,500 full structural fee where genuinely minor.