RICS Building Surveys: Which Level Do You Need Before You Buy?

**Level 1 — RICS Home Survey (Condition Report)**: The most basic survey available. Provides a traffic-light rated assessment of the major visible elements of a property — roof, walls, floors, services. It does not include a valuation, does not give a detailed description of defects, and is designed only for new-build or recently constructed properties in excellent, well-maintained condition.

**When Level 1 is appropriate**: Rarely, for a new property in perfect condition where the buyer wants a basic condition check. Not appropriate for any London Victorian or Edwardian property, any older stock, any property that has had DIY work, or any property with known or suspected defects.

**Level 2 — RICS Home Survey (HomeBuyer Report)**: The mid-tier survey — the most commonly commissioned by London homebuyers. A Level 2 survey includes a visual inspection of all accessible parts of the property, a traffic-light rating for each element, a description of significant defects identified, and advice on maintenance and urgent repairs. It can optionally include a market valuation.

**What Level 2 does NOT include**: It does not open up surfaces, lift floorboards, or investigate behind finishes. Where a surveyor identifies a suspected defect they cannot see behind a surface (e.g., suspected structural movement, damp in a wall, suspected failed cavity wall tie), they will note it as a 'further investigation recommended' item but will NOT investigate it themselves. The buyer must then commission specialist reports.

**When Level 2 is appropriate**: For properties that appear to be in reasonable condition with no major visible defects and no suspected structural issues. Suitable for modern or recent construction (post-1970s), conventional construction types, well-maintained properties.

**Level 3 — RICS Home Survey (Building Survey)**: Formerly known as a 'Full Structural Survey'. This is the most detailed survey available and is the appropriate choice for most older London properties, any property with suspected structural issues, any property being purchased for renovation, and any non-standard construction.

• A Level 3 survey includes:
• •A thorough inspection of all visible and accessible elements
• •A detailed description of all defects found, their likely cause, and their severity
• •Where the surveyor suspects defects hidden behind surfaces, they will recommend further investigation AND describe the likely cause and implications
• •Advice on repair and maintenance
• •An assessment of construction type and any non-standard elements
• •An assessment of any alterations to the property and whether they appear to have been competently executed and (where relevant) whether they would have required planning and Building Regulations approval
• •Advice on legal matters (party walls, boundaries, rights of way) that may affect the property

• **When Level 3 is essential**:
• •Any Victorian or Edwardian terrace (pre-1920 construction)
• •Any property with solid brick walls (as opposed to cavity wall construction)
• •Any property where DIY works, conversions, or extensions have been carried out
• •Any property with visible signs of damp, structural movement, or unusual alterations
• •Any property the buyer intends to substantially refurbish or extend
• •Any property above £500,000 where the cost of a Level 3 is proportionate to the risk
• •Any property of non-standard construction (timber frame, prefabricated concrete, steel frame)

The practical difference between a Level 2 and Level 3 survey becomes clear when you look at what the surveyor investigates and how they communicate it.

• **Damp**:
• •Level 2: If damp is suspected, the surveyor will use a moisture meter on accessible surfaces and note 'suspected damp — recommend further investigation by a specialist damp contractor.'
• •Level 3: The surveyor will investigate the damp more thoroughly, discuss the likely cause (rising damp vs penetrating damp vs condensation — three completely different problems with completely different remediation approaches and costs), and will describe the likely extent and required treatment. This prevents the buyer from commissioning a 'specialist damp contractor' who may diagnose rising damp (and propose a chemical DPC injection at £3,000–£8,000) when the actual issue is penetrating damp from a failed render (fixed for £1,500–£3,000 in patching and re-render).

• **Structural movement**:
• •Level 2: 'Cracks noted in external brickwork. Recommend further investigation by a structural engineer.'
• •Level 3: The surveyor will assess the cracks in detail — their width, pattern, location, and correlation with other evidence (door frames out of square, floors sloping, cracking pattern suggesting specific failure mode). They will distinguish between shrinkage cracking (cosmetic), historic but stable settlement (monitor only), or active structural movement (urgent structural engineer assessment required). This distinction can save the buyer thousands in unnecessary structural engineer fees and reduces negotiation uncertainty.

• **Unauthorised alterations**:
• •Level 2: May note that an extension or conversion is present; rarely comments on whether it appears to have had Building Regulations approval.
• •Level 3: Will specifically assess extensions, conversions, and alterations and comment on whether they appear to have been carried out to a competent standard and whether they would have required Building Regulations and/or planning approval. Where evidence of approval is absent, the Level 3 surveyor will flag the implications for insurability, mortgageability, and future sale.

• **Party walls**:
• •Level 2: May mention the existence of a party wall.
• •Level 3: Will assess the party wall structure in more detail, flag any evidence of party wall repairs or alterations that may affect the buyer's rights or obligations, and raise any concerns about the structural condition of the party wall.

**Services (heating, plumbing, electrics)**: Neither Level 2 nor Level 3 includes a specialist services inspection — both surveys are visual, and the surveyor cannot operate appliances or test systems. For older properties being refurbished, an independent EICR (Electrical Installation Condition Report) from a Part P electrician and a Gas Safety check from a Gas Safe engineer are essential in addition to the survey.

**RICS survey costs (London, 2025)**:

| Survey Level | Typical London Property | Cost | |---|---|---| | Level 1 (Condition Report) | Flat, new build | £250–£400 | | Level 2 (HomeBuyer Report) | Standard terrace / flat | £450–£900 | | Level 2 with valuation | Standard terrace / flat | £550–£1,000 | | Level 3 (Building Survey) | Victorian terrace | £700–£1,500 | | Level 3 on larger property (5+ beds) | Larger detached / commercial | £1,200–£2,500 |

Costs vary by property size, property age, surveyor's firm, and the specific location within London. Some surveying firms charge significantly more in Prime Central London (SW3, W1, etc.).

• **How to choose a surveyor**:
• •Always use a RICS-registered surveyor — check membership at rics.org
• •Choose a surveyor who is local to the area — they will understand local building types, drainage issues specific to the area, and the history of construction methods in that postcode
• •Read the sample report before commissioning — some Level 3 reports are 80 pages of specific, detailed findings; others are 30 pages of boilerplate. Ask to see an example
• •Do not use the mortgage lender's in-house surveyor for your buyer's survey — the mortgage valuation is not a building survey and serves the lender's interests, not yours
• •For a property over £600,000 in London, commission the survey before finalising the offer price — a Level 3 survey may reveal significant remediation costs that allow for price renegotiation

• **What to do with the survey findings**:
• A Level 3 survey with a list of significant defects is not a reason to walk away — it is a negotiating tool. Most defects can be priced by a contractor. With contractor-priced costs in hand, the buyer can:
• •Renegotiate the purchase price by the cost of the remediation
• •Ask the vendor to carry out specific works before exchange
• •Factor the costs into the refurbishment budget
• •In extreme cases (structural movement, significant damp throughout the property, non-standard construction that makes the property unmortgageable), decide not to proceed