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RICS Home Survey Standard 2023 · Level 3

RICS Level 3 Building Survey reports for older, larger or non-standard properties

The deepest RICS residential survey. Comprehensive narrative, probable-cause analysis per defect, dedicated Energy Matters section, R-flag for documents the buyer should request. AI drafts from your notes — never invents materials, measurements or causes.

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What's in the report

Sections A–M of the RICS Home Survey Standard 2023, plus auto-rendered house diagram.

  1. AAbout the inspectionSurveyor, RICS number, client, date, weather, related party disclosure, UPRN, property reference.
  2. BOverall opinionOverall narrative, documents received and to request, repairs cost guidance, further investigations.
  3. CAbout the propertyConstruction, year built/extended, accommodation, means of escape, EPC rating, energy efficiency issues, mains services, listed-building flag.
  4. DOutside the property9 elements: chimneys, roof, gutters, walls, windows, doors, conservatory, joinery, other. CR1/2/3/NI per element with description, defects, probable cause, recommendations.
  5. EInside the property9 elements: roof structure, ceilings, walls, floors, fireplaces, fittings, woodwork, bathrooms, other.
  6. FServices7 elements with safety warnings: electricity (RCD/EICR), gas/oil (Gas Safe), water, heating, water heating, drainage, common services.
  7. GGrounds8 elements: garage, outbuildings, trees, boundaries, retaining walls, driveways, other features, common areas.
  8. HIssues for legal advisersRegulation, guarantees, boundary issues, rights of way, statutory/planning matters.
  9. IRisksBuilding risks, ground risks, people risks (subsidence, flooding, structural movement, asbestos, radon, fire safety, trip hazards).
  10. JEnergy mattersJ1 Insulation, J2 Heating, J3 Lighting, J4 Ventilation, J5 General — dedicated to L3 only.
  11. KSurveyor's declarationSigned declaration, qualifications, RICS-aligned AI disclosure (text/photo/research/confirmation).
  12. LFurther investigations & quotesSpecialist investigations recommended, advice on obtaining quotations.
  13. MService description & termsStandard L3 service terms boilerplate.

What makes Level 3 different

Three things L3 has that L1 and L2 don't.

Section J

Energy Matters

Dedicated 5-part energy analysis: J1 Insulation, J2 Heating, J3 Lighting, J4 Ventilation, J5 General. Surfaces what the EPC misses — fabric performance, ventilation strategy, retrofit suitability.

Per-element

Probable cause field

L3 splits each defect into description, defects, probable cause, and recommendations. The cause analysis is what buyers (and their solicitors) need to make repair decisions. L1 and L2 stop at "what's wrong" — L3 asks "why".

RICS-only

R-flag (Documents to Request)

Per-element flag with structured document list. EICR, FENSA, HETAS, boiler commissioning, building regs sign-off, gas safety. Independent of the CR1/2/3 rating — a CR1 element can still need an R-flag if paperwork is missing.

Level 3 FAQs

When is a Level 3 building survey appropriate?
For older properties (pre-1900), listed buildings, properties built with non-standard materials (timber frame, steel frame, concrete), properties showing visible defects, properties with extensions or major alterations, and where the buyer wants the deepest possible inspection. For typical 1930s+ residential properties without obvious concerns, Level 2 is usually proportionate.
How is Level 3 different from Level 2?
L3 is more thorough, takes longer on site, produces a longer report, and includes (a) per-element probable cause analysis, (b) a dedicated Energy Matters section (J1–J5), (c) means-of-escape capture, and (d) listed-building support. L2 is a HomeBuyer-grade overview; L3 is a Building Survey grade investigation.
Does the Level 3 template support CR1/CR2/CR3 condition ratings?
Yes. Every element has a CR1/CR2/CR3/NI rating, and the Summary section auto-generates the condition rating table. CR3 elements require an "urgency reason" field before export — a hard validation gate.
Can I include valuations in a Level 3 report?
No — L3 is an inspection, not a Red Book valuation. For valuation alongside inspection, use the Level 2 + Valuation template, which adds Red Book compliance fields. L3 + valuation is uncommon in practice; most L3 instructions are inspection-only.
How does AI help with Level 3 reports?
The AI drafts the formal description, defects, probable cause, and recommendations from your short on-site notes. Strict-literal mode means it never invents materials, measurements or causes. Every AI-assisted L3 report carries the RICS 2026 AI disclosure block in Section K.

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£35/month or £30/month annually. All templates, unlimited reports, web + iOS + Android.

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Last reviewed: · Updated as RICS guidance changes.