Professional Statement
States that members must:
Details the use of IPMS!
IPMS 1 - GEA - All properties - Planning and Costings
IPMS 2 - GIA - Offices and Residential - Valuation, Agency and Taxation
IPMS 3 - NIA - Offices - Valuation, Agency and Taxation
IPMS 3A - GEA - Residential - Valuation, Agency and Taxation
IPMS 3B - GIA - Residential - Valuation, Agency and Taxation
IPMS 3C - EFA - Residential - Valuation, Agency and Taxation
Internal Dominant Face:
- The finished surface comprising of more than 50% of the surface – floor to ceiling height
- Ignore any columns either recessed or protruding perimeter trunking etc
Component Areas:
- External wall or Internal structural elements (walls and columns)
- Can be technical services (plant rooms, lifts)
Purpose = Planning and Costings
Types = Offices and Residential
Equivalent = GEA
Measure to = External Boundaries of Building
Included but State Separately =
- Covered Galleries
- External Balconies
- Rooftop Terraces
- Permanent Mezzanines
Exclude =
- Voids
- Patios and Decks
Difference with GEA =
- GEA Deducts:
o External Balconies
o Rooftop Terraces
Purpose = Valuation, Agency and Tax
Types = Offices and Residential
Equivalent = GIA
Measure to = Internal Dominant Face (middle of shared walls)
Included but State Separately =
- Covered Galleries
- External Balconies
- Rooftop Terraces
- Permanent Mezzanines
Exclude =
- Voids
- Patios and Decks
Difference with GIA =
- GIA Deducts:
o External Balconies
o Rooftop Terraces
Purpose = Valuation, Agency and Tax
Types = Offices
Equivalent = NIA
Measure to = Internal Dominant Face (middle of shared walls)
Included but State Separately =
- Covered Galleries
- All Balconies
- Rooftop Terraces (Exclusive Use)
Exclude =
- Voids
- Patios and Decks
- Standard Facilities:
o Stairs
o Lifts
o WCs
o Plant Rooms
Difference with GIA =
- NIA Deducts:
o External Balconies
o Rooftop Terraces
o Internal Structural Walls and Columns
o Measurement to middle of shared walls
o Areas of Below 1.5m Headroom
IPMS 3a – GEA
IPMS 3b – GIA
IPMS 3c – NIA (EFA – carpeted room by room basis)
Guidance Note
All types of properties
Industrial (including ancillary offices and mezzanine)
Offices and retail
Annually by the manufacturer.
Check against two points that you know to be a certain measurement before every inspection.
Check against EPCs and VOA measurements.
EPC – GIA – 15% to Net
VOA – Code of Measuring Practice