Building Structures Associates
Structural Engineers
Building Structures Associates
The Hermitage, East Grinstead
# Building Structures Associates
Building Structures Associates is a specialist structural engineering practice based in East Grinstead, serving projects throughout the South East, London and the Home Counties. Founded in 1986 by David Wadsworth, the firm has built a reputation for delivering expert structural design and consultancy across both residential and commercial sectors.
The practice serves homeowners, developers, architects and contractors requiring structural engineering expertise for extensions, conversions, new builds and complex refurbishment projects. Their client base also includes those needing forensic engineering advice and expert witness services for structural defect claims.
What sets BSA apart is the calibre of their leadership. David Wadsworth holds an honours degree in Civil Engineering and is a Chartered Engineer with corporate membership of both the Institutions of Structural and Civil Engineers. He was made a Fellow of the Institution of Structural Engineers in 2009, reflecting his standing within the profession. Since 2022, Nicola—an experienced technician and director since 2017—now leads day-to-day operations, with David acting as consultant.
Rather than operating as a large impersonal firm, BSA maintains a lean core team that strategically engages specialist geotechnical engineers, drainage experts, party wall surveyors and architects as projects demand. This flexible approach ensures clients receive focused attention from principals rather than junior staff, combined with access to specialist expertise when needed.
The practice offers transparent, competitive fees on hourly or fixed-price bases, with invoices rendered on completion or monthly for longer engagements.
Building Structures Associates is a specialist structural engineering practice based in East Grinstead, serving projects throughout the South East, London and the Home Counties. Founded in 1986 by David Wadsworth, the firm has built a reputation for delivering expert structural design and consultancy across both residential and commercial sectors.
The practice serves homeowners, developers, architects and contractors requiring structural engineering expertise for extensions, conversions, new builds and complex refurbishment projects. Their client base also includes those needing forensic engineering advice and expert witness services for structural defect claims.
What sets BSA apart is the calibre of their leadership. David Wadsworth holds an honours degree in Civil Engineering and is a Chartered Engineer with corporate membership of both the Institutions of Structural and Civil Engineers. He was made a Fellow of the Institution of Structural Engineers in 2009, reflecting his standing within the profession. Since 2022, Nicola—an experienced technician and director since 2017—now leads day-to-day operations, with David acting as consultant.
Rather than operating as a large impersonal firm, BSA maintains a lean core team that strategically engages specialist geotechnical engineers, drainage experts, party wall surveyors and architects as projects demand. This flexible approach ensures clients receive focused attention from principals rather than junior staff, combined with access to specialist expertise when needed.
The practice offers transparent, competitive fees on hourly or fixed-price bases, with invoices rendered on completion or monthly for longer engagements.
Services offered
Structural design for extensions and loft conversionsNew build structural engineeringRefurbishment and reconstruction projectsIndustrial and commercial building designExpert witness and forensic engineeringParty wall surveyingGeotechnical engineering consultationDrainage design