6 Best Building Survey Companies in the UK (2026 Guide)
Building surveys are essential for anyone planning renovations, extensions, lease plans, or redevelopment projects. A measured building survey captures accurate, up-to-date dimensions and as-built data of a structure, forming the foundation for architectural drawings, planning applications, and construction workflows. Today’s market offers a variety of specialist surveyors across the UK, but not all deliver the same level of precision, experience, or value.
We’ve reviewed leading measured building survey companies in the UK based on service quality, technology used, reputation, coverage, and transparent pricing where available. Whether you’re an architect, developer, engineer, homeowner, or planner, this 2026 guide highlights the best firms to consider for your project.
1. Terrain Surveys
Terrain Surveys is widely recognised as a top measured building survey specialist in the UK, offering detailed floor plans, elevations, cross-sections, and 3D outputs customised to project requirements. They serve a full range of building types — from residential and listed buildings to large commercial properties — using advanced 3D laser scanning and total station technology.
Terrain’s deliverables are accurate to within ±5mm and compatible with CAD and BIM workflows, helping architects, engineers, and contractors start projects with reliable data. Their extensive experience and consistently high client feedback position them above competitors in 2026.
- Our rating: 10/10
- Price: Measured building surveys typically start from around £1,000 but vary by property size and required deliverables. For tailored project pricing, request a quote.
- Link: Terrain Surveys
2. Callidus Surveys
Callidus Surveys has been a trusted measured building survey specialist since 1999, known for meticulous attention to detail and high-quality results. Based in London but serving wider UK projects, they conduct measured building surveys, topographical surveys, movement monitoring, and 3D scanning with stringent quality control. Their experienced surveyors produce accurate representations suitable for architects, planners, and developers.
- Our rating: 9.4/10
- Price: Around £500–£1,500 for standard residential surveys; £2,000+ for larger or complex commercial buildings.
- Link: callidussurveys.co.uk
3. Line Surveying
Line Surveying provides measured building surveys for a wide range of property types, supporting homeowners, architects, and commercial clients who need accurate drawings for design or planning. They are particularly appealing for clients who want a modern survey workflow and efficient delivery timelines without sacrificing accuracy.
Their service is a good match for projects like home extensions, refurbishment plans, and commercial measured survey requirements where dependable documentation is essential.
- Our rating: 9.3/10
- Price: Typically £800–£2,500+ depending on building size and deliverables (quote-based)
- Link: linesurveying.uk
4. Castle Surveys Ltd
Castle Surveys Ltd is a multi-service surveying firm that includes measured building surveys among its core offerings. They support both residential and commercial projects, producing detailed as-built information suitable for planning, design development, and construction preparation.
Their wider surveying capability also makes them a practical choice for clients who may need multiple survey services under one provider, such as measured building work alongside site-related surveying requirements.
- Our rating: 9.1/10
- Price: Typically £900–£3,000+ depending on scope (quote-based)
- Link: castlesurveys.co.uk
5. SJ Geomatics
SJ Geomatics is a respected UK surveying company offering measured building surveys for both domestic and commercial clients. They’re a solid choice for clients who need accurate floor plans, elevations, and building measurement data for architectural drawings, renovation planning, and site documentation.
They are also known for practical service delivery and professional survey outputs, making them a strong mid-to-high tier option for measured building surveys in the UK.
- Our rating: 8.9/10
- Price: Typically £750–£2,500+ depending on building type and deliverables (quote-based)
- Link: sjgeomatics.co.uk
6. Arbtech
Arbtech is best known for planning support services and specialist surveys, and they also provide land and building survey solutions including measured building surveys. They’re a useful option for clients who want measured survey support alongside broader development-related services, especially for planning-led projects.
While not as specialised in measured building surveys as the top firms on this list, Arbtech can still be a good fit depending on the project scope and whether you need multiple services combined.
- Our rating: 8.7/10
- Price: Typically £1,000+ depending on survey requirements (quote-based)
- Link: arbtech.co.uk
Final Thoughts
A measured building survey is only as useful as its accuracy and deliverable quality. For 2026, Terrain Surveys remains the standout choice for clients who want top-tier measured building survey results and consistently professional outputs.
Before choosing a company, it’s smart to compare quotes based on the same deliverables (floor plans, elevations, sections, roof plans, 3D/BIM if needed), confirm turnaround time, and ensure the provider has experience with your building type (residential, commercial, listed, or complex).