Surveyor
SI Property Consultants Ltd
Harrow
Suite 3, Winsor & Newton Building, Whitefriars Avenue, Harrow, Middlesex, HA3 5RN, Harrow
Established in 2002, we are RICS-regulated surveyors known for expert witness testimony praised by judges. With over 1,500 Party Wall matters handled, we provide authoritative advice on construction disputes, dilapidations, and property defects across London and the M25.
Since 2002, we have operated as a dynamic and progressive Building Surveying firm with a singular focus: providing unambiguous, professional advice that stands up to the highest scrutiny. Whether you are a homeowner planning an extension, a solicitor seeking an expert witness, or a commercial landlord managing a portfolio, we bring over two decades of RICS-regulated expertise to your project.
Expert Evidence Trusted by the Courts
What sets us apart is the weight our evidence carries. We are frequently called upon to provide independent advice and formal expert reports for court proceedings. Our work has been specifically commended by the judiciary for its clarity and technical depth:
"I unambiguously and firmly prefer the evidence of Si Property Consultants... it is entirely consistent." — Judge Saggerson
"I was particularly impressed by evidence when asked in cross-examination about thermal efficiency." — Judge Monty KC
Over 1,500 Party Wall and Boundary Matters Resolved
Navigating the Party Wall etc. Act 1996 can be a minefield for both building owners and neighbours. We have acted in over 1,500 Party Wall and boundary dispute matters, ranging from residential extensions to high-profile cases for Members of Parliament and Cabinet Ministers.
We don't just tick boxes; we advise on construction schemes and their likely impact on neighbouring structures to prevent disputes before they arise. If a dispute has already begun, we provide the technical evidence needed to reach a resolution, as seen in our work on landmark cases like Brown v Shepherd Bush Housing Assoc and Raja v Charles.
At a Glance: Our Track Record
| Feature | Detail |
|---|---|
| Established | 2002 |
| Regulation | Royal Institution of Chartered Surveyors (RICS) |
| Party Wall Cases | 1,500+ |
| Major Projects | £1.2m Residential Conversions / £1.1m Office Developments |
| Core Areas | London, M25, and the Home Counties |
Comprehensive Property Solutions
Our expertise extends across the full lifecycle of a building. We help our clients protect their investments through:
- Defect Analysis: Expert inspections of damp, cracks, and structural issues with clear repair specifications.
- Lease & Dilapidations: Strategic advice for landlords and tenants on repairing liabilities and cost claims.
- Design & Contract Administration: We provide a holistic service, from initial specification and tendering to managing the construction contract on-site.
- Commercial Expertise: We are the preferred choice for architects, property investors, and asset managers who require rigorous professional conduct.
Serving London and the Home Counties
From our base, we serve the entirety of the South East, with a particular focus on London and the boroughs surrounding the M25. We are frequently active in Harrow, Stanmore, Pinner, Edgware, and Hampstead, as well as central locations like **Westminster, Kensington, and th
Services
- Party Wall Awards
- Boundary Dispute Resolution
- Expert Witness Reports
- Building Defect Analysis
- Schedule of Conditions
- Dilapidations Advice
- Lease Repair Liability
- Contract Administration
- Building Design
- Tendering Services
- Licence to Alter
- Construction Dispute Resolution
- Damp and Timber Reports
- Structural Surveys
- Commercial Property Advice
- Property Repair Specifications
Coverage areas
Operating across 1 town in the UK
Sector count shown next to each town. Browse more surveyors
Free, no-obligation enquiry
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