Green Building Ratings and Indoor Air in the UAE

Two government green building schemes in the UAE carry indoor air requirements, and they work in different ways. Al Sa'fat, the Dubai Green Building System, 2nd edition January 2023, sets conditions inside a tier that Dubai Municipality describes as mandatory for all new buildings to obtain the Silver Sa'fa, with Golden and Platinum optional, and requires testing of listed categories of existing building. Estidama in Abu Dhabi runs a Pearl Rating System of one to five pearls with minimum ratings tied to obtaining a building permit, and places indoor air quality within its indoor and outdoor livability credit category. Neither is a private certification, and neither can be replaced by one: government instruments apply independently of any voluntary badge a project may also hold.

Al Sa'fat as a green building instrument

Dubai Municipality states that from 19 October 2020 Al Sa'fat replaced the Dubai Green Building Regulations and Specifications, and that Al Sa'fat includes a set of mandatory requirements for all new buildings to obtain the Silver Sa'fa, with Golden and Platinum optional for higher performance. Silver is therefore the mandatory tier for new buildings.

Its indoor air content sits in four places. Clause 401.01 requires the latest edition of ASHRAE Standards 62.1, 62.2 and 170, with no edition year attached. Clause 401.02 requires return air filters of minimum MERV 8. Clause 401.07 requires listed categories of existing building to apply testing, with a retesting interval of within 5 years of the last compliant test. Clauses 404.01 and 404.02 require VOC content limits set by Dubai Municipality and certified by Dubai Central Laboratory, landing on standard DMS 0020:2016, which are grams per litre limits on product composition rather than airborne concentrations, so no averaging period applies.

The mechanism is therefore a mixture of design conditions, product conditions and, for listed existing buildings, measured parameters, all carried inside a tiered system whose lowest tier is compulsory for new construction.

Estidama as a green building instrument

Abu Dhabi City Municipality states that the Pearl Rating System is a tiered evaluation system ranging from one to five pearls, that government-funded projects must achieve a minimum two-pearl rating while privately funded projects must achieve at least a one-pearl rating, and that meeting these requirements is essential for obtaining a building permit.

The system has mandatory and optional credits, and indoor air quality sits within its indoor and outdoor livability credit category. Pearl Qualified Professionals prepare and submit Estidama compliance applications, the Department of Municipalities and Transport governs the system's policies, and Abu Dhabi City Municipality's Sustainable Buildings Section implements the system during the design and construction phases.

No credit code or point value is reproduced here. What matters structurally is that indoor air quality enters Abu Dhabi construction compliance as a subject inside a rating tied to permitting rather than as a table of airborne values.

How the two schemes differ in mechanism

Al Sa'fat expresses a compulsory floor as a tier: the requirements needed to obtain Silver apply to all new buildings. Estidama expresses its floor by funding source, at a minimum of two pearls for government-funded projects and at least one pearl for privately funded projects, and ties meeting those requirements to obtaining a building permit.

Al Sa'fat reaches existing buildings directly through clause 401.07 for named categories. Estidama is implemented during the design and construction phases, so its engagement with a project is at those stages rather than as a continuing duty on an occupied existing building.

Al Sa'fat publishes parameters with bases for its measured requirement, including formaldehyde below 0.08 ppm as an 8-hour time-weighted average and bacteria and fungi each below 500 CFU per cubic metre as per-sample counts that are not time-weighted. Estidama's treatment of indoor air sits within a credit category rather than in a published parameter table of that kind.

Both are government schemes administered by public bodies, which is what separates them from any privately operated rating.

Voluntary certification does not discharge a government requirement

A project may hold a certification issued by a private organisation in addition to whatever government instruments reach it. Holding one does not answer the other, because the government instruments apply on their own terms and are administered by the authorities that set them.

In Dubai, an existing building remains subject to clause 9-8-4 of Dubai Municipality's Technical Guidelines for Indoor Air Quality for Healthy Life, reference DM-HSD-GU119-IAQ, Version 4, issued 11 December 2024, which states that indoor air testing for the contaminants in Table 2 must be carried out, whatever private certification it also holds. Table 2 sets TVOC at 0.6 mg/m3 over 8 hours, carbon dioxide at 800 ppm over 8 hours, carbon monoxide at 9 ppm over 8 hours and ozone at 0.06 ppm over 8 hours.

In Abu Dhabi, the Codes of Practice under the ADOSH-SF framework administered by the Abu Dhabi Public Health Centre are mandatory to all entities regardless of risk classification, with indoor-environment duties inside Code of Practice 8.0, General Workplace Amenities, Version 4.0 of 15 July 2024, at section 3.7 on HVAC. A private certification does not displace that layer either.

WELL, BREEAM and ASHRAE are named here factually only: WELL and BREEAM are voluntary schemes operated by private organisations, ASHRAE is a private standards organisation whose standards clause 401.01 references, and all are separate from UAE government requirements, with no affiliation or endorsement implied.

Reading the schemes alongside the air instruments

The Dubai green building system and the Dubai indoor air guideline are separate documents with separate structures, and the guideline's own asymmetry has to be preserved when they are read together: clause 9-8-3 covers new buildings that optionally apply the procedures and leads to a certificate awarded by Dubai Municipality, while clause 9-8-4 states that testing must be carried out for existing buildings.

The Municipality guideline's scope excludes premises exclusively dedicated to industrial and medical sectors, for example hospitals and factories, whereas the Al Sa'fat clause 401.07 category list includes healthcare facilities, so a building may be inside one and outside the other.

Values also differ across the schemes and must always be quoted with their instrument and period. Al Sa'fat clause 401.07 sets TVOC below 300 micrograms per cubic metre as an 8-hour time-weighted average; the guideline sets 300 micrograms per cubic metre over 8 hours in Table 1 for new buildings and 0.6 mg/m3 over 8 hours in Table 2 for existing buildings.

Neither scheme creates a UAE-wide rule. There is no single UAE-wide indoor air rule, and Al Sa'fat and Estidama operate in their own emirates.

International assessment schemes are sometimes assumed to substitute for the local systems, and why a voluntary international rating is secondary in the UAE.

Al Sa'fat

Mandatory requirements for all new buildings to obtain the Silver Sa'fa, with Golden and Platinum optional, plus clause 401.07 testing for listed existing buildings.

Estidama

One to five pearls, minimum two for government-funded projects and at least one for privately funded projects, tied to obtaining a building permit.

Different mechanisms

Al Sa'fat carries published parameters with bases; Estidama places indoor air quality within its indoor and outdoor livability credit category.

No substitution

A privately issued certification does not discharge a Dubai Municipality or Abu Dhabi requirement, which apply independently.

Status of the instruments

Al Sa'fat, the Dubai Green Building System, 2nd edition January 2023, includes a set of mandatory requirements for all new buildings to obtain the Silver Sa'fa and requires listed categories of existing building to apply testing under clause 401.07. Abu Dhabi City Municipality states that Estidama minimum pearl ratings are essential for obtaining a building permit, with indoor air quality inside the indoor and outdoor livability credit category. Both are government schemes and operate alongside the Dubai Municipality guideline and the ADOSH-SF Code of Practice layer.

WELL and BREEAM are voluntary schemes operated by private organisations and are separate from UAE government requirements. No affiliation with any scheme or standards organisation is implied.

Which UAE green building schemes carry indoor air requirements?

Al Sa'fat in Dubai and Estidama in Abu Dhabi. Al Sa'fat carries indoor air content at clauses 401.01, 401.02, 401.07, 404.01 and 404.02, and Dubai Municipality states that mandatory requirements apply to all new buildings to obtain the Silver Sa'fa. Estidama places indoor air quality within its indoor and outdoor livability credit category inside a rating tied to obtaining a building permit.

Does a private green certification satisfy UAE requirements?

No. Government instruments apply independently. An existing building in Dubai remains subject to clause 9-8-4 of the Dubai Municipality guideline, which states that indoor air testing for the contaminants in Table 2 must be carried out, and entities in Abu Dhabi remain subject to Codes of Practice that are mandatory to all entities regardless of risk classification.

How do Al Sa'fat and Estidama differ?

Al Sa'fat sets a compulsory tier for new buildings and reaches listed existing buildings directly with published parameters and bases, while Estidama sets minimum pearl ratings by funding source, ties them to obtaining a building permit, and is implemented during the design and construction phases with indoor air quality handled inside a credit category.

How are WELL, BREEAM and ASHRAE relevant?

WELL and BREEAM are voluntary schemes operated by private organisations, and ASHRAE is a private standards organisation whose Standards 62.1, 62.2 and 170 are referenced in their latest edition by Al Sa'fat clause 401.01. All are separate from UAE government requirements, and no affiliation with or endorsement by any of them is implied.