The three RICS survey levels under the 2021 RICS Home Survey Standard serve different purposes and different property types. Level 1 is appropriate only for new-build or recently renovated properties in excellent condition. Level 2 covers most conventional post-1900 properties. Level 3 is required for older, non-standard, or defective properties — the surveyor has access to roof spaces, floor voids, and concealed areas, and provides detailed narrative advice on defects and repair costs.
BTL landlords are particularly exposed to survey risk because they are purchasing as an investment — the level of dilapidation affects both rental yield and future resale value. Non-standard construction (concrete panel systems such as Airey, BISF, Cornish Unit, and Wimpey No-Fines) can be designated as 'defective dwellings' under the Housing Act 1985, making them unmortgageable with conventional lenders and unmarketable without remediation. A Level 3 survey will identify this. In Scotland, the mandatory Home Report (which includes a Single Survey equivalent to RICS Level 2) must be provided by the seller before marketing the property.
RICS Level 1, 2 and 3 survey standards, when Level 3 is required, mortgage valuation vs private survey, Scotland Home Report and surveyor liability
The complete RICS survey framework for BTL landlords:
- RICS Level 1 Condition Report, Level 2 Home Survey Standard, Level 3 Home Survey Premium (Building Survey) — contents, costs and when each level is required: RICS LEVEL 1 — CONDITION REPORT: traffic light condition ratings for key elements of the property (C1 — no immediate repair needed; C2 — repair or replacement needed but not urgent; C3 — urgent repair or replacement required); no market valuation (Level 1 does not include a valuation); no advice on specific repairs or maintenance actions; no inspection of drainage; suitable for: new-build properties (NHBC or Premier Guarantee warranty); recently renovated or refurbished properties where defects are visible and recent; conventional brick or masonry construction in excellent condition with no history of defects; cost: approximately £250-£400 depending on property size and location. RICS LEVEL 2 — HOME SURVEY STANDARD: the most commonly purchased survey — replaces the former RICS HomeBuyer Report (which was retired in 2021); includes: (a) visual inspection of all accessible parts of the property — exterior (roof covering; chimney stacks; guttering; downpipes; external walls; windows and doors; damp-proof courses; drainage gullies; outbuildings and boundary structures); interior (roof space via inspection hatch; ceilings; walls; floors; fireplaces and chimney breasts; internal doors; bathrooms; kitchens); (b) condition ratings (C1/C2/C3) for each inspected element with brief description; (c) advice on significant defects and urgency of repair; (d) recommendations for further specialist investigations where appropriate (e.g., CCTV drain survey; electrical test; gas safety test; structural engineer's report for specific cracks; damp and timber specialist for suspected dry rot or rising damp); (e) optional RICS valuation (the surveyor must be separately RICS-registered for valuation — available at extra cost; typically £100-£200 additional); not suitable for: pre-1900 properties with potential structural issues; non-standard construction (concrete panel; steel frame; timber frame); properties with visible structural movement; thatched roofs; properties requiring significant repair; cost: approximately £400-£900 depending on property value and location. RICS LEVEL 3 — HOME SURVEY PREMIUM (BUILDING SURVEY): the most detailed RICS survey product — formerly known as the 'Building Survey' or 'Full Structural Survey'; includes: (a) detailed inspection of all accessible areas including ROOF SPACES (the surveyor enters the roof space where safe and accessible — identifies: roof structure condition; rafter deterioration; sarking felt condition; insulation levels and type; water damage; signs of vermin); FLOOR VOIDS (where accessible via inspection hatches — identifies: dampness; timber decay; structure condition; vermin); (b) detailed narrative report on construction; defects; maintenance requirements; repair options; risks of inaction; (c) provisional cost estimates for significant repairs (where sufficient information is available); (d) specific recommendations for specialist investigations (structural engineer; damp and timber specialist; CCTV drain survey; asbestos survey under CAR 2012; electrical installation condition report (EICR); gas safety check); cost: approximately £600-£1,500+ depending on property size; complexity; and location. WHEN IS A LEVEL 3 REQUIRED: (a) PRE-1920 CONSTRUCTION (particularly Victorian — pre-1901; Edwardian — 1901-1910): lime mortar pointing (softer; may have failed; allows water ingress); lath and plaster walls and ceilings (fragile; difficult to repair; potential for hidden defects); original solid wall construction (225mm or 450mm solid brick; no cavity; high heat loss; condensation risk); original single-glazed sash windows; potentially original lead water pipes (drinking water contamination risk); historic structural settlement or movement; early use of asbestos products (post-1920); (b) NON-STANDARD CONSTRUCTION: concrete panel systems — BISF (British Iron and Steel Federation — steel frame with concrete infill panels; 1940s-1950s; NHBC warranty issues; some designated as Defective Dwellings under the Housing Act 1985); Airey (concrete post and panel; 1940s-1950s; designated as Defective Dwelling after BRE report; many lenders will not lend); Cornish Unit (concrete frame with cladding panels; 1940s-1960s); Unity; Wimpey No-Fines (concrete aggregate infill; porous; prone to carbonation); Laing Easiform; Orlit (reinforced concrete frame; may have rusting reinforcement — HAC — high alumina cement issues); for any of these systems, the buyer must check whether the property has been PRC (Prefabricated Reinforced Concrete) repaired (BRE/Agreed Repair Schemes); timber frame construction (normal for Scottish building stock; issues of interstitial condensation; VCL condition; head binder moisture content); steel frame (Reema; Dorran; Colt); cob; chalk; clay lump (organic material; susceptible to water damage; specialist lime mortar repairs); (c) THATCHED ROOFS: fire risk (thatched properties have higher fire insurance premiums — usually requiring specialist insurers such as Thatched Mutual; NFTSC-member thatchers); RICS specialist sub-report on thatch condition recommended; ridge and thatch condition; fire barriers in roof void; (d) SUBSIDENCE HISTORY: visible diagonal cracking at window and door corners; stair-step cracking in brickwork; underpinning on historic conveyancing file; proximity to trees (shrinkable clay soils — London Clay; Gault Clay; Keuper Marl — susceptible to subsidence from root shrinkage); (e) SIGNIFICANT EXTENSIONS OR CONVERSIONS: particularly commercial to residential conversions; barn conversions; loft conversions with structural alterations
- Mortgage valuation (V1) vs private survey, Smith v Eric S Bush [1990], Watts v Morrow [1991], surveyor liability and Scotland Home Report: MORTGAGE VALUATION (V1 — LENDER'S VALUATION): the mortgage lender commissions an RICS-registered valuer to confirm: (a) that the property exists in the condition described; (b) that the property is adequate security for the loan amount; (c) a market value estimate; the V1 report is prepared for the lender — IT DOES NOT PROTECT THE BUYER; the V1 valuer does not carry out a detailed structural survey; defects that would have been identified in a Level 2 or Level 3 survey may not appear in the V1; a buyer who relies solely on the V1 and later discovers structural defects cannot generally sue the lender's valuer for failing to identify them. SMITH v ERIC S BUSH [1990] UKHL: the House of Lords held that in the context of an ORDINARY DOMESTIC MORTGAGE VALUATION (i.e., a typical residential purchase by a private buyer, not a commercial or large investment transaction), the surveyor engaged by the mortgage lender owes a limited duty of care to the buyer — this duty cannot be excluded by a standard disclaimer clause in the lender's terms (UCTA 1977 s.2(2) applies). HOWEVER: the duty in Smith v Bush is narrow — it does not require the valuer to carry out the equivalent of a full Level 2 or Level 3 survey; it relates to the valuer's duty not to be negligent in their valuation function; the decision does NOT apply to commercial transactions, large transactions, or sophisticated buyers. WATTS v MORROW [1991] CA: even if a surveyor is found liable for a negligent survey, the measure of damages is: (a) the DIMINUTION IN MARKET VALUE of the property at the date of purchase (i.e., the difference between what the buyer paid and what the property was actually worth given the defects); PLUS (b) consequential loss directly resulting from the defect being present; the full cost of repairing the defects is NOT recoverable unless the buyer was negligently induced to purchase a property they would not otherwise have purchased at all. SURVEYOR LIABILITY CAPS: most RICS survey instruction terms now contain liability caps (typically at 3× the survey fee; or the purchase price of the property; whichever is lower); such caps in consumer contracts are subject to the UCTA 1977 s.11 reasonableness test — a cap must be REASONABLE having regard to the resources available to the surveyor for meeting the liability and the extent to which the surveyor could have covered the risk by insurance. BTL LANDLORD RECOMMENDATION: always commission a Level 2 or Level 3 private survey (from an independent RICS surveyor — not the lender's valuer) for any BTL purchase; for properties built before 1920; non-standard construction; or with any visible defects, commission a Level 3 Building Survey; budget for specialist reports recommended by the surveyor (CCTV drain survey approximately £200-£400; electrical EICR approximately £150-£300; gas safety check approximately £80-£120; structural engineer approximately £500-£1,500; damp and timber specialist approximately £200-£500). SCOTLAND — MANDATORY HOME REPORT: all residential properties marketed for sale in Scotland (from 1 December 2008 under the Housing (Scotland) Act 2006 s.98-100) must have a HOME REPORT provided to prospective buyers on request; the Home Report comprises: (a) SINGLE SURVEY — equivalent to a RICS Level 2 survey (visual inspection; condition ratings A/B/C; market valuation; accessibility profile for disabled occupants); (b) ENERGY REPORT — Energy Performance Certificate (EPC) with recommendations; (c) PROPERTY QUESTIONNAIRE — completed by the seller (information on: council tax band; parking; alterations; guarantees; dispute history; specialist reports); cost for seller: approximately £500-£900; Scotland Home Reports are refreshed if the property has been on the market for more than 12 weeks without sale; buyers in Scotland can request their own RICS Level 3 survey at their own cost if they require more detailed information than the Single Survey provides
Frequently asked questions
What is the difference between a RICS Level 2 and Level 3 survey?+
A RICS Level 2 (Home Survey Standard — approximately £400-£900) covers a visual inspection of all accessible parts of the property with condition ratings (C1/C2/C3) and repair advice. A RICS Level 3 (Home Survey Premium / Building Survey — approximately £600-£1,500+) is more detailed: the surveyor inspects roof spaces (entering via hatch) and floor voids, provides detailed narrative on defects and repair options, gives provisional cost estimates, and recommends specialist investigations. Level 3 is required for pre-1920 properties, non-standard construction (BISF, Airey, Cornish Unit, timber frame), thatched roofs, properties with subsidence history, or any property with significant defects.
Does the mortgage lender's valuation (V1) protect me as a BTL buyer?+
No — the mortgage valuation (V1) protects only the lender. It confirms the property's suitability as security for the loan amount; it is not a detailed structural survey. A buyer cannot generally rely on the V1 to recover losses from defects the valuer failed to identify (though Smith v Eric S Bush [1990] creates a limited duty of care in ordinary domestic mortgage contexts). BTL landlords should always commission an independent RICS Level 2 or Level 3 survey in addition to the lender's V1.
Can I sue a surveyor for a negligent survey?+
Yes — RICS surveyors can be liable for negligent surveys. Under Watts v Morrow [1991], damages for a negligent survey are limited to the diminution in market value of the property at the date of purchase (not the full cost of repairs), plus consequential loss directly resulting from the defect. Most survey instructions contain liability caps (typically 3× the survey fee or the purchase price) subject to UCTA 1977 reasonableness. Smith v Eric S Bush [1990] confirmed that a lender's valuer owes a limited duty of care to domestic buyers and cannot exclude it by a standard disclaimer.
Is a Home Report required in Scotland before selling a property?+
Yes — under the Housing (Scotland) Act 2006, all residential properties marketed for sale in Scotland must have a Home Report available to prospective buyers on request. The Home Report comprises: a Single Survey (equivalent to a RICS Level 2 survey with condition ratings A/B/C and market valuation); an Energy Report (EPC); and a Property Questionnaire (seller-completed information). Cost to the seller: approximately £500-£900. Buyers who want more detailed information than the Single Survey provides can commission their own RICS Level 3 survey.
- Property searches — pre-purchase environmental and local authority due diligence →
- Land contamination — Phase 1 and Phase 2 environmental surveys →
- Asbestos surveys — inspection and management obligations for landlords →
- Japanese knotweed — disclosure obligations and mortgage impact →
- Conveyancing for buy-to-let — the legal purchase process →
- New-build warranty defects — NHBC and developer remedies →