Survey finding
LPS construction blocks: should you buy a flat in one?
LPS is the structural type behind Ronan Point. This page covers strengthening, lender appetite, and major works exposure.
Last updated: 6 May 2026. Editorially reviewed: 20 May 2026.
Finding
Large panel system (LPS) construction
What this usually means
Large panel system construction (LPS) is a form of high-rise concrete panel construction popular in the 1960s-70s. After the Ronan Point partial collapse in 1968, many blocks have been strengthened, but unstrengthened blocks remain. Identification is from local authority records and building age.
Why it matters
Some lenders refuse outright; most require evidence of post-Ronan Point strengthening. Insurance is similar to other ex-local-authority blocks.
Ask your surveyor
- Check:Has the block been strengthened post-Ronan Point, and is there documentation?
- Check:What is the freeholder's planned works programme over the next 5 years?
Ask the seller
- Check:Can you share the last 3 years of service charge accounts?
- Check:What major works are scheduled?
Next steps
- •Get two written quotes from local trades before negotiating with the seller.
- •Speak to your mortgage broker before exchanging if the finding affects mortgageability.
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What you need to know
Severity
Serious. Lender and insurer involvement likely; structural or specialist remediation.
Typical cost to fix
Strengthening works are managed at block level by the freeholder; individual leaseholders typically face significant service charges over multi-year programmes (£10,000-£30,000+ per flat in major works).
Mortgage impact
Mainstream lender appetite is mixed; specialist lenders cover most LPS blocks. Letter from the freeholder confirming strengthening is the key document.
Insurance impact
Block insurance arranged by freeholder; check service charge accounts for premium trends.
When to pull out
Walk away if strengthening cannot be evidenced.
When to renegotiate, and by how much
Discount typically already priced in; further negotiation depends on planned major works.
Thinking of pulling out or renegotiating? What to do after a bad survey
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Run a free previewHow MyPropertyScan produces this guide, and what it is not
Published by MyPropertyScan and written by Ziad Nasr, who is accountable for its accuracy. No page here is written or reviewed by a chartered surveyor, conveyancer or regulated adviser, and we do not claim otherwise.
This page is not:
- Chartered surveying — we do not inspect properties or produce RICS Home Survey reports
- Legal advice — we do not act as conveyancers or advise on title, tenure or contracts
- Mortgage or insurance advice — we are not regulated by the FCA and give no recommendations
Figures and process steps come from the published UK datasets and standards listed on this page, not from professional practice. Pages are updated when source coverage, survey cost assumptions, or lender and legal requirements materially change. Dataset limitations are set out on the methodology page.
Spotted something out of date or wrong? Email hello@mypropertyscan.com and we will correct it and change the update date.
Sources used
We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.
Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.
- Professional standard: RICS Home Survey StandardRICS standard for condition-based residential surveys in the UK.
- Learn more from: RICS consumer guide to surveysConsumer-facing guide to survey types and when each level is appropriate.
- Official guidance: GOV.UK buying or selling your homeGovernment overview of the home buying and selling process.