Mainline Surveys
Land and drone surveying for planning and development

Professional Land & Drone Surveys

We provide topographical, measured building, utility and drone surveys for planning, design and construction decisions.

Support is built for architects, developers and property owners across London, the South East and surrounding UK locations.

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  • Fully Insured
  • Commercial & Site Work Specialists
  • 5 Star Rated
  • Emergency Callout
What We Do

Land & Drone Surveying Services

From early feasibility through delivery, we provide survey outputs for planning applications, design coordination and construction control. Typical work includes boundary checks, utility risk mapping and measured surveys for extensions, redevelopments and commercial sites.

Building Surveys

Detailed property inspections to assess condition, risks, and required works.

  • Clear condition and defect overview before committing
  • Helps prioritise maintenance and planned repair works
  • Supports negotiations with evidence-led findings
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Party Wall Surveyors

Professional advice and notices for works affecting shared walls and neighbouring properties.

  • Clarity on whether the Party Wall Act applies
  • Correct notices and documentation for compliance
  • Helps avoid disputes and neighbour delays
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Topographical Survey

Detailed land surveys showing existing ground levels, features and boundaries.

  • OS-compliant level and feature data
  • Planning-ready CAD deliverables
  • Tree and boundary detail included
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Drone Survey

Rapid aerial surveys for sites, roofs and structures using UAVs.

  • Aerial orthomosaic and point cloud
  • Large-area coverage in a single visit
  • 3D models and volumetric calculations
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Measured Building Survey

Accurate internal and external measurements of existing buildings.

  • Floor plans, elevations and sections
  • Accurate to RICS standards
  • CAD and BIM-ready outputs
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Utility Survey

Detection and mapping of underground services before excavation.

  • GPR and electromagnetic location
  • PAS 128 compliant detection
  • Utility clash risk reporting
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Specialist Survey Services

For detailed site intelligence and boundary clarity, these specialist survey methods complement our core offering.

  • Planning-ready data

    Accurate surveys and deliverables suitable for design and approval.

  • Experienced survey partners

    Land, utility, measured building and drone capture under one roof.

  • Calibrated methods

    The right technique for your site, brief and output format.

  • Agreed programmes

    Clear milestones from brief through capture to delivery.

  • Flexible outputs

    CAD, point clouds, BIM-ready data and reports as required.

  • UK coverage

    Support for developments and infrastructure projects nationwide.

Our Work

Recent Projects

Recent survey work across the UK

These examples show recent survey projects across different property types, from planning-led reports to construction support surveys.

Topographical survey for constrained city-centre redevelopment site

Topographical survey for constrained city-centre redevelopment site

Topographical Survey · London

This London survey job covered a mixed-use redevelopment plot where the design team needed a planning-ready topographical base without disrupting the live city-centre access route.

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Measured building survey for Richmond period conversion

Measured building survey for Richmond period conversion

Measured Building Survey · Richmond

We surveyed this Richmond conversion ahead of internal reconfiguration works where the architect needed reliable as-built information from an occupied split-level property.

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Utility survey before excavation in Chiswick

Utility survey before excavation in Chiswick

Utility Survey · Chiswick

This Chiswick survey was commissioned before extension groundworks where the contractor needed buried services traced before any excavation started in the rear garden.

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Utility mapping on active school site in Wimbledon

Utility mapping on active school site in Wimbledon

Utility Mapping Survey · Wimbledon

We mapped services across this Wimbledon school site before phased refurbishment where the works team needed reliable underground information without disrupting term-time use.

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Boundary survey before title issue review in Kingston

Boundary survey before title issue review in Kingston

Boundary Survey · Kingston

This Kingston boundary survey was needed before fencing and extension planning where the owner needed a clear measured position of the rear boundary line.

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Laser scanning for Fulham commercial fit-out

Laser scanning for Fulham commercial fit-out

Laser Scanning Survey · Fulham

We scanned this Fulham commercial unit before fit-out where the design team needed dependable internal geometry for MEP coordination inside a live shell-and-core environment.

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Planning a survey? Start here

Practical guides and articles from our team.

Testimonials

What Our Clients Say

Don't just take our word for it – hear from some of our satisfied clients.

The topographical survey was delivered on time and the CAD drawings fitted straight into our design workflow. Clear, professional and exactly what we needed for planning.

James Richardson
Architect, London

We use Mainline Surveys for measured building and drone surveys across our development portfolio. Reliable data, clear pricing and no surprises on site.

Sarah Mitchell
Development Manager, Surrey

Booked a drone survey for our extension project. The orthophoto and levels were spot-on and saved us a lot of design time. Would recommend.

Michael Chen
Homeowner, Kent

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