Gross external area GEA - Revision history

Designing Buildings at 05:57, 2 October 2026

2026-10-02T05:57:31Z

178.248.34.141 at 15:57, 23 June 2022

2022-06-23T15:57:07Z

← Older revision		Revision as of 15:57, 23 June 2022
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	* Perimeter wall thickness and external projections.		* Perimeter wall thickness and external projections.
	* Areas occupied by internal walls (whether structural or not) and partitions.		* Areas occupied by internal walls (whether structural or not) and partitions.
		+	* Atria and entrance halls, with clear height above, measured at base level only.
	* Columns, piers, chimney breasts, stairwells, lift wells, and so on.		* Columns, piers, chimney breasts, stairwells, lift wells, and so on.
	* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.		* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.

178.248.34.141 at 15:56, 23 June 2022

2022-06-23T15:56:10Z

← Older revision		Revision as of 15:56, 23 June 2022
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	* Columns, piers, chimney breasts, stairwells, lift wells, and so on.		* Columns, piers, chimney breasts, stairwells, lift wells, and so on.
	* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.		* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.
−	* ~~Open-sided covered areas (should be stated separately)~~.	+	* Any area with a headroom of less than 1.5m.

	Gross external area excludes:		Gross external area excludes:
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	* Open sided covered ways.		* Open sided covered ways.
	* Open vehicle parking areas, terraces and so on.		* Open vehicle parking areas, terraces and so on.
−	* ~~Minor canopies~~	+	* Canopies
−	* ~~Any area with a headroom of less than 1.5 m (except~~ under ~~stairways).~~	+	* Voids over or under structural, raked or stepped floors
		+	* Greenhouses, garden stores, fuel stores, and the like in residential property
	* Any area under the control of service or other external authorities		* Any area under the control of service or other external authorities

Designing Buildings at 06:15, 1 September 2020

2020-09-01T06:15:01Z

← Older revision		Revision as of 06:15, 1 September 2020
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	* Total useful floor area.		* Total useful floor area.

−	[[Category:~~Standards_/_measurements~~]] [[Category:DCN_Standard]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]]

Designing Buildings at 13:56, 30 January 2019

2019-01-30T13:56:19Z

← Older revision		Revision as of 13:56, 30 January 2019
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	* Gross development area.		* Gross development area.
	* Gross internal area.		* Gross internal area.
		+	* Gross site area.
	* International Property Measurement Standards.		* International Property Measurement Standards.
	* Measurement.		* Measurement.
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	* Total useful floor area.		* Total useful floor area.

−	[[Category:Standards_/_measurements]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]]

Designing Buildings at 13:40, 30 January 2019

2019-01-30T13:40:01Z

← Older revision		Revision as of 13:40, 30 January 2019
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	The VOA Code of measuring practice is in general agreement with RICS Guidance Note, A guide for Property Professionals, 6th Edition Code of measuring practice 2007, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.		The VOA Code of measuring practice is in general agreement with RICS Guidance Note, A guide for Property Professionals, 6th Edition Code of measuring practice 2007, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Area.		* Area.
	* Floor area ratio.		* Floor area ratio.
		+	* Gross development area.
	* Gross internal area.		* Gross internal area.
	* International Property Measurement Standards.		* International Property Measurement Standards.

Editor at 11:42, 17 September 2018

2018-09-17T11:42:15Z

← Older revision		Revision as of 11:42, 17 September 2018
Line 11:		Line 11:
	* Perimeter wall thickness and external projections.		* Perimeter wall thickness and external projections.
	* Areas occupied by internal walls (whether structural or not) and partitions.		* Areas occupied by internal walls (whether structural or not) and partitions.
−	* Columns, piers, chimney breasts, stairwells, lift wells and so on.	+	* Columns, piers, chimney breasts, stairwells, lift wells, and so on.
	* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.		* Lift rooms, plant rooms, tank rooms, fuel stores, whether or not above roof level.
	* Open-sided covered areas (should be stated separately).		* Open-sided covered areas (should be stated separately).
Line 22:		Line 22:
	* Open vehicle parking areas, terraces and so on.		* Open vehicle parking areas, terraces and so on.
	* Minor canopies		* Minor canopies
−	* Any area with a headroom of less than 1.5m (except under stairways).	+	* Any area with a headroom of less than 1.5 m (except under stairways).
	* Any area under the control of service or other external authorities		* Any area under the control of service or other external authorities

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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Area.
	* Floor area ratio.		* Floor area ratio.
	* Gross internal area.		* Gross internal area.

Designing Buildings at 05:34, 21 May 2018

2018-05-21T05:34:00Z

← Older revision		Revision as of 05:34, 21 May 2018
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

−	* Beneficial occupation.
−	* Case notes for rating valuation (Garton V Hunter).
−	* Choice of method for rating valuation.
−	* Contractor’s basis for rating valuation.
	* Floor area ratio.		* Floor area ratio.
	* Gross internal area.		* Gross internal area.
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	* Measurement.		* Measurement.
	* Net internal area.		* Net internal area.
−	* ~~Profits method of rating valuation.~~	+	* Site area.
−	* Rating valuation.	+
−	* Rental method of rating valuation.	+
−	* Statutory formulae for rating valuation.	+
	* Total useful floor area.		* Total useful floor area.

	[[Category:Standards_/_measurements]]		[[Category:Standards_/_measurements]]

Designing Buildings at 06:46, 7 May 2018

2018-05-07T06:46:07Z

← Older revision		Revision as of 06:46, 7 May 2018
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	It suggests that party walls should be measured to their centre lines.		It suggests that party walls should be measured to their centre lines.
		+
		+	According to NRM1: Order of cost estimating and cost planning for capital building work, the gross external area is '...the area of a building measured externally (i.e. to the external face of the perimeter walls) at each floor level.The rules of measurement of gross external floor area are defined in the latest edition of the RICS Code of Measuring Practice.'

	The VOA Code of measuring practice is in general agreement with RICS Guidance Note, A guide for Property Professionals, 6th Edition Code of measuring practice 2007, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.		The VOA Code of measuring practice is in general agreement with RICS Guidance Note, A guide for Property Professionals, 6th Edition Code of measuring practice 2007, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.

Editor at 16:32, 21 December 2016

2016-12-21T16:32:52Z

← Older revision		Revision as of 16:32, 21 December 2016
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	* Choice of method for rating valuation.		* Choice of method for rating valuation.
	* Contractor’s basis for rating valuation.		* Contractor’s basis for rating valuation.
		+	* Floor area ratio.
	* Gross internal area.		* Gross internal area.
	* International Property Measurement Standards.		* International Property Measurement Standards.

← Older revision		Revision as of 05:57, 2 October 2026
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	It is very important to be clear about which measure is being used, for example in property sales, planning applications, building regulations applications, lease negotiations, rating valuations and so on.		It is very important to be clear about which measure is being used, for example in property sales, planning applications, building regulations applications, lease negotiations, rating valuations and so on.

−	The UK ~~government’s~~ Valuation Office Agency (VOA) [https://www.gov.uk/government/publications/measuring-practice-for-voa-property-valuations/code-of-measuring-practice-definitions-for-rating-purposes Code of measuring practice: definitions for rating purposes] suggests that ~~‘gross~~ external ~~area’~~ refers to the whole area of a building taking each floor into account, including perimeter walls. This includes:	+	The UK government's Valuation Office Agency (VOA) [https://www.gov.uk/government/publications/measuring-practice-for-voa-property-valuations/code-of-measuring-practice-definitions-for-rating-purposes Code of measuring practice: definitions for rating purposes] suggests that 'gross external area' refers to the whole area of a building taking each floor into account, including perimeter walls. This includes:

	* Perimeter wall thickness and external projections.		* Perimeter wall thickness and external projections.
Line 22:		Line 22:
	* Open sided covered ways.		* Open sided covered ways.
	* Open vehicle parking areas, terraces and so on.		* Open vehicle parking areas, terraces and so on.
−	* Canopies	+	* Canopies.
−	* Voids over or under structural, raked or stepped floors	+	* Voids over or under structural, raked or stepped floors.
−	* Greenhouses, garden stores, fuel stores, and the like in residential property	+	* Greenhouses, garden stores, fuel stores, and the like in residential property.
−	* Any area under the control of service or other external authorities	+	* Any area under the control of service or other external authorities.

	It suggests that party walls should be measured to their centre lines.		It suggests that party walls should be measured to their centre lines.

−	According to NRM1: Order of cost estimating and cost planning for capital building work, the gross external area is '...the area of a building measured externally (i.e. to the external face of the perimeter walls) at each floor level.The rules of measurement of gross external floor area are defined in the latest edition of the RICS Code of Measuring Practice.'	+	According to NRM1: Order of cost estimating and cost planning for capital building work, the gross external area is '...the area of a building measured externally (i.e. to the external face of the perimeter walls) at each floor level. The rules of measurement of gross external floor area are defined in the latest edition of the RICS Code of Measuring Practice.' NRM1 was republished in a new edition in October 2021 and reissued, unchanged, as RICS professional practice information in October 2022.

−	The ~~VOA~~ Code of ~~measuring practice is in~~ general ~~agreement with~~ RICS ~~Guidance Note~~, ~~A guide~~ for Property ~~Professionals~~, ~~6th Edition Code of measuring practice 2007~~, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.	+	The RICS Code of Measuring Practice, 6th edition (2007, amended 2015), on which the VOA's rating definitions were originally modelled, has since been superseded for general RICS practice by RICS Property Measurement, 2nd edition, which became mandatory for all RICS members and regulated firms on 1 May 2018 and aligns with the International Property Measurement Standards (IPMS). The VOA's own definitions for rating purposes, set out above, remain in force in their own right and continue to apply for rating valuations, other than, areas with a headroom of less than 1.5m which are excluded from the VOA measurement.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =