Visual Structural Appraisal in London for Cracks & Movement

A visual structural appraisal is an inspection-led first-stage review of visible structural indicators such as cracking, distortion, differential movement and settlement. It gives the client a clear view on whether the signs appear historic, minor, progressive or potentially more significant, and what practical next step is justified.

HCS are RICS chartered building surveyors, not structural engineers. A building surveyor can inspect visible cracking and movement, report on the observed pattern and recommend proportionate next steps. A structural engineer is the right call where the brief requires calculations, structural design, load-path or stability analysis, foundation or temporary-works design, or an engineered opinion on adequacy; we say so plainly and recommend that referral rather than acting outside our role.

We can comment on the apparent pattern, likely cause and significance of the cracking, and whether the visible signs suggest monitoring, repair or further specialist input. Categorising severity definitively can require monitoring or structural engineering input, which we identify where relevant.

Not usually. The appraisal is generally visual and non-intrusive. Where the findings suggest opening-up or deeper investigation is needed, that next step is set out clearly so the client can scope and price it.

Yes. Where visible movement is a concern during acquisition, a visual structural appraisal helps the buyer understand the apparent issue, its likely significance and whether further action or specialist input is needed before proceeding.

We can recommend and set up crack or level monitoring where the pattern is uncertain and time will clarify whether movement is progressive. Monitoring over a period is often the proportionate step before committing to remedial works.

An inspection-led report on the visible cracking, movement or distortion, an opinion on whether it appears longstanding, minor, progressive or potentially significant, the limitations of a visual non-intrusive review, and clear next-step recommendations aligned to the level of concern.

Where the appraisal indicates active or significant structural movement, a load-path or stability concern, or a need for design, calculations or remediation, a structural engineer should be instructed. We identify that clearly and can coordinate the right specialist rather than acting outside our role.

Yes. Subsidence and heave on London clay, bay-window and bonnet-roof movement, and historic settlement on period property are common. We interpret the visible signs in that context and advise whether monitoring, drainage investigation or structural engineering input is the proportionate next step.

No. A visual structural appraisal reports on visible indicators within the agreed scope and the areas accessed. It is not a guarantee that the building is structurally safe or defect-free, and where structural certainty is needed we identify that a structural engineer's assessment is required.

People use ‘structural survey’ for both. A RICS Level 3 Building Survey — previously called the RICS Building Survey and, before that, commonly if loosely known as a ‘full structural survey’ — is a whole-building pre-purchase survey, while a visual structural appraisal is a focused inspection of specific cracking or movement. If you are buying and want the whole building covered, choose the Level 3 survey; if a specific crack or movement concern on a building you already own or manage is the issue, the appraisal is usually the proportionate route.

Often, yes. Insurers and loss adjusters generally want an independent record of the damage, an opinion on cause and significance, and a recommended next step, and the appraisal provides that evidence trail. Notify your insurer first — many policies require it and the insurer may appoint its own experts; our appraisal then serves as your independent record alongside that process. Where calculations or detailed design are required, we identify that clearly and coordinate the right specialist.

For a higher-risk building (HRB), yes. A dated, documented structural appraisal — sometimes called a structural risk assessment — is evidence the accountable person can hold in the building’s golden thread and place alongside fire safety information in the safety case, supporting the safety case report and any building assessment certificate application the Building Safety Regulator (BSR) directs. Structural failure is, with the spread of fire, one of the two building safety risks defined by the Building Safety Act 2022. For HRBs and tall buildings this is our high-rise and higher-risk structural surveys instruction; the appraisal supports that evidence rather than replacing the accountable person’s duties or a structural engineer’s design work.