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Buying & Building Guide

Which Home Survey Do You Need?

A plain-English guide to RICS Level 1, 2 and 3 surveys, structural inspections, boundary surveys and more - so you can buy with confidence.

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A mortgage valuation is not a survey. It tells your lender whether the property is worth the loan - it tells you nothing about the condition of the building. Commissioning an independent survey before you exchange contracts is one of the most important steps you can take when buying a property, yet it is one of the most commonly skipped. This guide explains the different survey types available in the UK, what each one covers, and which is right for your situation.

The Three RICS Survey Levels

The Royal Institution of Chartered Surveyors (RICS) introduced a standardised three-level framework in 2021, replacing older terminology like "HomeBuyer Report" and "Full Structural Survey" with a clearer numbering system.

RICS Level 1

Condition Report

Formerly: Condition Report
  • Visual inspection of accessible areas only
  • Traffic-light condition ratings (1, 2, 3)
  • Flags urgent legal issues
  • No advice on repairs or maintenance
  • No market valuation included
Typical cost: £250 - £400

Best for: new-build or recently renovated properties in good condition

Choose Level 1 when…
  • The property was built within the last 10 years or is newly renovated
  • You have already had an informal viewing and are confident in its condition
  • Your mortgage lender requires a basic condition check before lending
  • You want the lowest-cost survey option and are comfortable accepting limited detail
Consider upgrading to Level 2 if the property is over 20 years old, has any visible defects, or is in a Conservation Area.
RICS Level 2 - Most Popular

HomeBuyer Report

Formerly: HomeBuyer Report
  • Visual inspection of accessible areas
  • Traffic-light condition ratings
  • Identifies significant defects and urgent repairs
  • Maintenance advice included
  • Optional market valuation add-on
  • Damp, timber and insulation checks
Typical cost: £400 - £900

Best for: conventional properties built after 1900 in reasonable condition

Choose Level 2 when…
  • The property is a conventional house, flat or bungalow built after 1900
  • It appears to be in reasonable condition with no obvious major defects
  • You want a traffic-light condition rating and clear maintenance advice
  • You would like the option to add a market valuation for an extra fee
Consider upgrading to Level 3 if the property is pre-1900, has been significantly extended or altered, or if your viewing raised any structural concerns.
RICS Level 3

Building Survey

Formerly: Full Structural Survey
  • Thorough inspection including concealed areas where safely accessible
  • Detailed defect descriptions with cause and risk
  • Repair and maintenance recommendations
  • Testing of services (heating, electrics, drainage)
  • Investigation of alterations and extensions
  • Most comprehensive report available
Typical cost: £600 - £1,500+

Best for: older, larger, unusual or significantly altered properties

Choose Level 3 when…
  • The property was built before 1900 or uses non-standard construction (timber frame, stone, thatched roof)
  • It has been extended, converted or significantly altered at any point
  • Your viewing revealed cracks, damp, roof issues or other concerns
  • You are planning major works and need to understand the full structural condition before committing
  • The property is listed, in a Conservation Area, or otherwise unusual
A Level 3 is also worth commissioning on any high-value purchase where the cost of missed defects would outweigh the extra survey fee.

Quick Comparison

Feature Level 1 Level 2 Level 3
Visual inspection✓✓✓
Condition ratings (traffic light)✓✓✓
Repair recommendations-✓✓
Damp & timber checks-✓✓
Investigation of concealed areas--✓
Services testing--✓
Cause & risk analysis--✓
Optional market valuation-✓✓

Specialist Survey Types

Beyond the three RICS levels, a number of specialist surveys are available for specific situations - particularly relevant for self-builders, those buying unusual properties, or where planning or legal disputes are involved.

Structural Engineer's Report

Commissioned separately from a RICS survey when structural concerns are identified - subsidence, cracking, roof spread, or inadequate foundations. A structural engineer can specify remedial works and provide calculations for building regulations approval.

Typical cost: £300 - £700

Boundary Survey

Establishes the precise legal boundaries of a plot using historical deeds, OS data and physical inspection. Essential before building near a boundary, erecting fencing, or resolving a neighbour dispute. Produced by a specialist boundary surveyor or land surveyor.

Typical cost: £500 - £1,200

Topographic Survey

Maps the physical features of a site - contours, levels, trees, services, structures and boundaries - to inform architectural design and planning applications. Usually required by architects before drawing up plans for extensions, new builds or significant landscaping.

Typical cost: £600 - £2,000+

Damp & Timber Survey

A specialist inspection focusing on moisture penetration, rising damp, condensation, wet rot and dry rot. Often triggered by findings in a Level 2 or 3 survey. Usually carried out by a specialist damp-proofing contractor or independent surveyor - be aware that contractor surveys may recommend more work than is needed.

Typical cost: £150 - £400

Drainage Survey (CCTV)

A CCTV camera is inserted into the drainage system to check for blockages, collapses, root ingress, misaligned joints and illegal connections. Highly recommended for older properties, those with large trees nearby, or where the drainage layout is unknown.

Typical cost: £100 - £350

Party Wall Survey

Required under the Party Wall Act 1996 when carrying out work that affects a shared wall, boundary, or excavations near a neighbour's foundations. A party wall surveyor prepares an Award setting out the rights and responsibilities of both parties before work begins.

Typical cost: £700 - £2,000

Which Survey Do You Need?

Buying a property
  • New build or recently renovated → Level 1
  • Standard post-war property → Level 2
  • Pre-1900, unusual or altered property → Level 3
  • Structural concerns flagged → Level 3 + Structural Engineer
Self build or extension
  • Buying a plot → Topographic + Boundary Survey
  • Extension near boundary → Party Wall Survey
  • Unusual ground conditions → Ground Investigation
  • Existing structure involved → Structural Engineer's Report

Frequently Asked Questions

Do I need a survey when buying a house?
A mortgage valuation is not a survey - it only confirms the property is worth the loan amount to your lender. You should always commission your own independent survey before exchanging contracts. Skipping a survey can leave you with costly repair bills you had no warning about. The cost of a survey is small compared to the potential cost of undiscovered defects.
What is the difference between a Level 2 and Level 3 survey?
A Level 2 HomeBuyer Report is a visual inspection of accessible areas, using a traffic-light rating to flag condition. It is suitable for conventional properties in reasonable condition. A Level 3 Building Survey is far more thorough - it investigates concealed areas where safely accessible, tests services, analyses the cause and risk of defects, and provides detailed repair recommendations. Level 3 is recommended for any property built before 1900, those with extensions or significant alterations, or where you have specific concerns.
Can I use the survey to renegotiate the price?
Yes - this is one of the key benefits of commissioning a survey before exchange. If the survey reveals significant defects, you can use the estimated repair costs to negotiate a reduction in the purchase price, ask the seller to carry out repairs before completion, or in serious cases, withdraw from the purchase without penalty (before exchange). Your solicitor and surveyor can advise on the best approach.
How long does a home survey take?
A Level 1 inspection typically takes 1-2 hours on site. A Level 2 takes 2-4 hours. A Level 3 Building Survey can take a full day for a large or complex property. Reports are usually delivered within 3-5 working days of the inspection, though this varies by surveyor and the complexity of the property.
Does a RICS survey cover everything?
No survey covers every possible defect. Surveyors inspect what is safely and reasonably accessible - they do not lift floorboards, open up walls, or test every electrical circuit. If the surveyor identifies concerns in specific areas (drains, structure, damp) they will recommend further specialist investigations. It is important to read the limitations section of your survey report carefully.
What is a topographic survey and do I need one for a self build?
A topographic survey maps the physical features of your site - ground levels and contours, existing structures, trees, boundary features and underground services. Most architects require one before they can draw up plans, and many planning authorities expect topographic data to accompany a planning application. If you are buying a plot, commission the survey as early as possible so your architect can work from accurate levels from day one.

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