Measured Internal Floor Plans

Internal Measured Building Surveys are accurate internal layouts of a building that feature as little or as much information, as required. Features that can be picked up are:

  • Beams and columns (lengths, widths and heights
  • Wall positions and thickness (including any recesses)
  • Floor levels and ceiling heights
  • Door positions with height frame
  • Window positions including height from floor to bottom and top cills
  • Stair positions
  • Sanitary ware
  • Electricity points
  • Fixed furniture

Simple layouts can be used for the provision of Commercial EPCs, with more complex calculations of layouts featuring Gross External Areas and Net and Gross Internal Areas for commercial land lords (see below for definitions). Other types of plans are:

Footprint Plans

We can specifically pick up all ground floor internal and external features of a building to create a footprint of the building


We can show a slice through a building picking up floor, door and ceiling heights, wall thicknesses and window sill heights as well as roof detail.

These types of site surveys support office relocation or refurbishment and the commercial development of buildings for new or continuous use. They can be requested purely to get an understanding of the area makeup, or, at the other extreme, as a blank canvas for developers, interior designers and office planners to completely redesign the internal layout of their building, providing the ability to see the potential repercussions of change within a defined space.

The emphasis is on accuracy with all complex layout calculations following the Royal Institute of Chartered Surveyors (RICS) Standard Code of Measuring Practice (6th Edition).

Area Measurement Definitions

Net Internal Area (NIA) - The Net Internal Area is defined as the usable floor area within a building inside the internal face of the perimeter walls, but with certain specified areas excluded.

Gross Internal Area (GIA) - The Gross Internal Area is the area of a building measured to the internal face of the perimeter wall at each floor level.

Gross External Area (GEA) - The Gross External Area is the area of a building measured externally at each floor level

Layouts can be translated into 2D and rooms colour coded by use and either printed as a hard copy or sent in other formats such as via digital media (DWG/DXF) or by PDF via e-mail.

Frequently Asked Questions:

  1. What are measured building surveys?

    Measured building surveys are line drawings which show an accurate representation of a building’s existing floor plan.

  2. Why would I need a measured building survey?

    Measured buildings are useful to individuals who are looking at building extensions or reconfiguring internal layouts and require an accurate dimensional drawing of the existing property.

  3. What is surveyed on a measured building survey?

    Major structural features such as joists, beams, and door openings are accurately positioned so any proposed features can be positioned by an architect onto plans with the confidence that the existing drawing is highly accurate.

  4. How accurate is an MBS survey?

    With irregular shaped buildings and features, a standard EDM (Electronic Distance Measurement) instrument is used to accurately position walls.  This is then imported into the specialised MBS (Measured Building Survey) software where the existing features can be added with knowledge that the main structure is positioned accurately.