Measurement

Question 1

What is GIA?

Answer 1

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

Question 2

What is NIA?

Answer 2

Net Internal Area is the usable area within a building measured to the internal face of the perimeter walls at each floor level.

Question 3

What is GEA?

Answer 3

Gross External Area is the area of a building measured externally at each floor level.

Question 4

What is IPMS 1?

Answer 4

The floor area measured to the external extent of the external walls.

Question 5

What is IPMS 3 Office?

Answer 5

The floor area available on an exclusive basis to an occupier, measured and stated
separately, but excluding standard facilities and shared circulation areas.

Question 6

What are some differences between IPMS 3 Office and NIA?

Answer 6

-Limited head height areas included in IPMS but stated separately.
-Area of window reveals where window is the internal dominant face included in IPMS.
-Half the area of the wall dividing occupiers included in IPMS.
-All internal walls and columns included in IPMS.

Question 7

What is excluded from NIA measurements?

Answer 7

Toilets
Areas used in common
Stairwells
Areas under 1.5m tall.
Plant rooms/tank rooms
Car parking spaces
Columns and internal structural walls
Permanent circulation areas

Question 8

What RICS document sets out NIA, GIA and GEA?

Answer 8

RICS Global Guidance Note - Code of Measuring Practice (6th Edn, Effective May 2015)

Question 9

What RICS document sets out IPMS?

Answer 9

RICS Global Professional Standard - Property Measurement (2nd Edn, Effective April 2018)

Question 10

What is the Internal Dominant Face?

Answer 10

The inside finished surface comprising more than 50% of the floor to ceiling height of each wall section.

Question 11

What is IPMS 3B - Residential?

Answer 11

The area in exclusion occupation, including the floor area occupied by internal walls and columns.