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Business Details
22 Years
experience
Expert Chartered Building Surveyors in Windsor
Established over two decades ago, Spencer Lion is a respected firm of Chartered Building Surveyors serving residential and commercial clients across London and the Thames Valley. Our practice combines more than 30 years of industry expertise with a client-focused approach, delivering tailored solutions that prioritise precision and responsiveness. Regulated by the Royal Institution of Chartered Surveyors (RICS), we uphold the highest standards of professionalism in every project. Our services span comprehensive building surveys, party wall advisory, and project management, with a particular specialism in historic and listed building refurbishments. We pride ourselves on demystifying complex processes, from Section 20 compliance to party wall legislation, ensuring legal protections and minimising project delays.

Our team's deep understanding of maintenance planning and contract administration supports clients through every phase, from initial brief to project completion. With a portfolio ranging from 50,000 to 2.5 million, we combine technical excellence with practical problem-solving. Our role as Principal Designer under CDM regulations underscores our commitment to safety and quality. Located in Eton near Windsor, we offer the personal service of a boutique practice while maintaining the rigour of industry-leading standards. Client testimonials consistently highlight our thoroughness, responsiveness, and ability to transform property transactions and renovation projects into confident, well-managed undertakings.
Services
Building Surveys Party Wall Advice Project Management Contract Administration Defect Analysis
Details
  • Year established: 2004
Highlights and features
  • We offer 30+ years of chartered surveying expertise
  • Our RICS regulation ensures industry-leading standards
  • Specialist knowledge of historic and listed building projects
  • Proven track record managing projects up to 2.5 million
  • Principal Designer under CDM Health & Safety Regulations
Associations and certifications
  • Royal Institution of Chartered Surveyors (RICS)
What people say
Thorough building survey Responsive team Knowledgeable staff Confidence in purchase Pleasure to deal with
Services
Building Surveys
Comprehensive property inspections identifying structural integrity and maintenance needs. Our RICS-compliant surveys provide detailed defect analysis with prioritised repair recommendations. Ideal for pre-purchase decisions or planning major renovations, these reports combine technical expertise with clear, actionable advice for residential and commercial properties.
Party Wall Advice
Expert guidance on Party Wall Act compliance for construction projects. We manage the full process from serving notices to award preparation, acting for both building owners and adjoining parties. Our services ensure legal compliance while minimising disputes through transparent condition surveys and impartial documentation.
Project Management
End-to-end management of building refurbishment projects, specialising in historic properties. We handle tender processes, contract administration, and site monitoring from 50k to 2.5m budgets. Our CDM-regulated approach ensures compliance with safety standards and statutory requirements throughout the Thames Valley region.
Contract Administration
Specialist administration for Section 20 works under Landlord & Tenant Act. We coordinate maintenance projects across apartment blocks, managing tender processes, valuations, and final account agreements. Our services ensure transparent cost recovery and compliance with statutory consultation procedures for property management companies.
Defect Analysis
Detailed investigation of building defects including damp, subsidence, and structural movement. We provide photographic documentation and technical analysis with repair strategies. Our reports serve as critical evidence for insurance claims, legal proceedings, and remedial works planning across residential and commercial properties.
Questions
What areas do Spencer Lion cover?
We serve London and the Thames Valley region from our Eton-based office.
Are your surveyors RICS qualified?
Yes, we are a RICS-regulated practice with chartered surveyors holding full professional accreditation.
Do you handle commercial property surveys?
We provide building surveys and project management services for both residential and commercial properties.
What party wall services do you offer?
We manage the complete party wall process including notices, awards, and condition surveys for both building owners and adjoining parties.
Can you manage listed building renovations?
We specialise in refurbishment projects for historic and listed buildings across our service area.
What project sizes do you handle?
Our project management covers works from £50,000 up to £2.5 million budgets.
Reviews (1)
Bvc
Nov 05, 2020 Report
I bought a place located around West London and spoke to different surveyors prior to booking Spencer Lion and got numerous quotes. I, of course, got a quote from Connells, which was the cheapest.
Having seen an example of a Connells survey from a friend of mine I was not convinced on the level of detail so opted not to go for them. I spoke to Adam at Spencer Lion who was very professional and knowledgable about what needs to be achieved. He asked the right questions about the property that no other surveyor asked.
Adam survey was thorough and his report is exactly what one needs before purchasing