Dubai Municipality publishes a document titled Technical Guidelines for Indoor Air Quality for Healthy Life, under the reference DM-HSD-GU119-IAQ. The current issue is Version 4, dated 11 December 2024, superseding the issue of 10 July 2024. It runs to sixty-three pages and comes from the Health and Safety Department. It is the only published set of indoor air quality figures of its kind in the United Arab Emirates, and it is often described in the market as though it were a binding standard. It is not, and the document says as much about itself. This page sets out what it contains, what its tables give, how indoor air quality certification under it works, and why directive language appears inside a document that is expressly guidance.
The guideline is issued by the Health and Safety Department of Dubai Municipality under the document reference DM-HSD-GU119-IAQ, at Version 4 dated 11 December 2024. That issue supersedes one dated 10 July 2024, which matters whenever a specification or an earlier report cites the guideline without naming a version. Clause numbering and content both change between issues, so a citation without a version has to be checked.
The document states its own status in two sentences worth reading closely. The first: "This guideline issued by Dubai Municipality to serve as a tool to enable concerned establishment to comply with relevant local regulation." The second: "The purpose of the Guideline is to provide guidance for healthy indoor air quality and to improve the performance of buildings and built environments." Two things follow. The guideline positions itself as an aid to compliance with regulation sitting elsewhere, rather than as that regulation. And it describes what it provides as guidance. Neither sentence claims that the document creates an obligation of its own, and that framing governs how every directive sentence later in it should be read.
The scope statement reads: "These guidelines are applicable to the indoor environments of all kinds of Public facilities, installations and buildings, which occupied by persons ... except those that are exclusively dedicated to industrial and medical sectors". It is drawn broadly, and the qualifying condition is occupancy by people rather than any particular use.
Two categories are carved out, and the word doing the work is "exclusively". A building falls outside the scope because it is dedicated wholly to the industrial sector or wholly to the medical sector, not because it contains an industrial or clinical element. Where the classification of a particular building is genuinely unclear, that is a question for Dubai Municipality.
Table 1 applies to new buildings and is tied to testing before occupancy. It gives total fungal counts of 500 CFU/m³, total bacterial counts of 500 CFU/m³, total volatile organic compounds of 300 μg/m³ over eight hours, formaldehyde of 0.01 ppm over eight hours with a short-term maximum of 0.08 ppm (0.1 mg/m³) over thirty minutes, PM2.5 of 35 μg/m³ over twenty-four hours, PM10 of 150 μg/m³ over twenty-four hours, and lead of 0.15 µg/m³ over three months. The accompanying text reads: "Indoor air quality testing must be carried out prior to occupancy. The maximum limit for indoor air contaminants included in Table (1) must not be exceeded. A report which shows compliance with these requirements must be submitted to Dubai Municipality." The guideline states these microbiological limits without specifying a sampled air volume or a sampling duration for them — the Average Time column is left blank for total bacterial and total fungal counts, whereas every chemical and particulate limit in the same table carries one. Section 9-8-7 sets only a general sampling period, that measurements should be made on an 8-hour basis except where otherwise specified with an accepted surrogate of four averaged half-hour measurements, and does not assign that basis to culture-based sampling; no sampler type, flow rate, culture medium or incubation regime is given. The guideline requires only that testing be carried out by a laboratory accredited under the Emirates International Accreditation Centre (EIAC) scheme on calibrated equipment. A CFU/m³ figure is therefore not comparable between two surveys unless the reporting laboratory states the air volume it sampled and over what period.
Table 2 applies to existing buildings. It gives total fungal counts of 500 CFU/m³, total bacterial counts of 1,000 CFU/m³, carbon dioxide of 800 ppm over eight hours, total volatile organic compounds of 0.6 mg/m³ over eight hours, PM2.5 of 35 μg/m³ over twenty-four hours and PM10 of 150 μg/m³ over twenty-four hours. The guideline states this limit without specifying a sampled air volume or a sampling duration, so a CFU/m³ figure is only comparable between surveys if the reporting laboratory states the air volume it sampled and over what period.
The comparison between the two repays attention, because it is regularly reported incorrectly. The total fungal count is 500 CFU/m³ in both tables; there is no relaxation for an existing building. The bacterial count is the only difference between them for the parameters they share, rising from 500 CFU/m³ to 1,000 CFU/m³. Beyond that the tables are not stricter and looser versions of one another, because their parameter sets differ. Carbon dioxide appears only in Table 2, which follows from Table 1 being a pre-occupancy test in an empty building; formaldehyde and lead appear only in Table 1; and the volatile organic compound figure is expressed in different units in each. The guideline states these microbiological limits without specifying a sampled air volume or a sampling duration for them — the Average Time column is left blank for total bacterial and total fungal counts, whereas every chemical and particulate limit in the same table carries one. Section 9-8-7 sets only a general sampling period, that measurements should be made on an 8-hour basis except where otherwise specified with an accepted surrogate of four averaged half-hour measurements, and does not assign that basis to culture-based sampling; no sampler type, flow rate, culture medium or incubation regime is given. The guideline requires only that testing be carried out by a laboratory accredited under the Emirates International Accreditation Centre (EIAC) scheme on calibrated equipment. A CFU/m³ figure is therefore not comparable between two surveys unless the reporting laboratory states the air volume it sampled and over what period.
Table 3 covers thermal comfort and applies to all new and existing buildings. It is preceded by the statement that "the heating, ventilation, and air conditioning (HVAC) system must be capable of providing the following range of conditions for ninety five percent (95%) of the year". The conditions are a dry bulb temperature of 22.5–25.5 °C, described as "Based on 80% of occupants comfort"; relative humidity of 20–60%, qualified by "Never to exceed 56%RH at 80F (27C) and 86%RH at 67F (19C)."; and air movement of 0.2–0.3 m/s.
The humidity qualifier is the most consequential line in that table and the one most often dropped when the figures are repeated. It turns a flat band into a temperature-dependent one: 60% is not available at every temperature in the range, since the ceiling at 27 °C is 56% and at 19 °C it is 86%. In substance it constrains how much water the air carries rather than the ratio alone, which is the quantity that governs whether a cooled surface reaches its dew point. The preceding sentence matters too. It is framed as a capability requirement on the plant across ninety-five per cent of the year, not as a statement that every individual reading must fall inside the band.
These are the values Dubai Municipality's indoor air quality guideline sets for buildings that opt into its indoor air quality certificate. The guideline describes itself as guidance rather than as a binding standard, and the certificate route is expressly optional. They are a published reference point within a voluntary Dubai Municipality scheme, not an enforceable UAE limit.
On who carries out the work, the guideline states: "Air Quality testing must be carried out by an air testing accredited company or laboratory by Emirates International Accreditation center (EIAC), and the Compliant test results must be submitted to DM." Accreditation is a check on the testing body rather than on the building, and it is granted against a defined scope of methods, so the scope of an accreditation is the thing to examine rather than the fact of it.
The document also addresses instrument calibration, requiring that calibration certificates "must be saved in a special register to be checked by DM to ensure the accuracy of the readings as condition of renewal the indoor air quality certificate." That places a record-keeping expectation on the certificate holder and not only on the testing body, and it ties the register to renewal rather than to the initial award.
Section 9-8-3 opens with the sentence that determines how everything after it reads: "The buildings which optionally apply the following procedures will be awarded indoor air quality certificate by Dubai municipality." The word doing the work is "optionally". The sentence describes a route a building may elect to follow and states the consequence of following it, which is the award of an indoor air quality certificate.
It does not say that buildings are to follow the procedures, and it does not present the certificate as a precondition of occupying or operating a building. What follows in that section is the content of the option. This is the point lost when the guideline is summarised second-hand: it is the difference between indoor air quality certification being something a building owner in Dubai chooses to obtain and something a building owner is presumed to be in default for not holding.
The apparent contradiction is a genuine feature of the text rather than a misreading. A document describing its purpose as providing guidance nonetheless contains sentences of the form testing must be carried out and the results must be submitted. Both are true at once, and they fit together once the structure is visible.
Those directive sentences sit inside the certificate procedure, which is the part of the document a building elects into. They set out the terms of the option rather than a general obligation on every building in the emirate. Read in place, they say that a building seeking the certificate tests before occupancy, does not exceed the Table 1 figures, uses an EIAC-accredited testing body and submits compliant results to Dubai Municipality. A directive verb inside a voluntary scheme is a condition of the award, not a penalty on those who never sought it.
The document's own modal verbs support that reading, because they change when the subject changes. Section 9-8-10, on non-compliance areas, states that "The owners/management of the premises/buildings, with the assistance of the competent Consultant accredited investigator, should carry out remedial actions on those non-compliance areas." and that "Competent Consultant investigator may carry out IAQ re-measurements for those failed parameters after remedial actions have been taken." Remedial action is put as should, and re-measurement after remediation is put as may. Post-remediation re-measurement is recommended by this document, not required by it.
For a building owner the consequence is plain. The guideline is not a source of a general duty to test a building in Dubai, and its figures are not enforceable exposure limits. It is the published terms of a scheme a building can choose to enter — a useful thing to have, and a different thing from a standard that applies whether or not anyone opts in.
The certificate most often reaches a building owner through a contract rather than through the Municipality. A landlord, a developer, a fit-out agreement, a facilities management scope or an incoming tenant may ask for a certificate, or for results demonstrating compliance with the guideline's tables. A request of that kind binds as a matter of contract and says nothing about whether the guideline imposes a duty of its own. Where it is made, the guideline becomes the specification for the work.
Where nothing has been asked for, the tables remain the most locally relevant published figures in the country, and there is no disadvantage in using them to frame a result. A count read against 500 CFU/m³ is at least being read against the same number other buildings in the emirate are. The guideline states this limit without specifying a sampled air volume or a sampling duration, so a CFU/m³ figure is only comparable between surveys if the reporting laboratory states the air volume it sampled and over what period.
What a result does not do is settle the question a building owner usually has. A total fungal count above 500 CFU/m³ is a prompt to find the water, not a diagnosis, and it identifies neither the source nor its extent. A count below 500 CFU/m³ in a building with growth behind a wall lining is a measurement of the wrong thing, and a certificate obtained on the strength of it says nothing about the concealed reservoir. Where the suspected reservoir sits inside the ventilation system rather than in the occupied space, duct cleanliness verification and air handling unit hygiene form a separate discipline with their own methods. The guideline states these microbiological limits without specifying a sampled air volume or a sampling duration for them — the Average Time column is left blank for total bacterial and total fungal counts, whereas every chemical and particulate limit in the same table carries one. Section 9-8-7 sets only a general sampling period, that measurements should be made on an 8-hour basis except where otherwise specified with an accepted surrogate of four averaged half-hour measurements, and does not assign that basis to culture-based sampling; no sampler type, flow rate, culture medium or incubation regime is given. The guideline requires only that testing be carried out by a laboratory accredited under the Emirates International Accreditation Centre (EIAC) scheme on calibrated equipment. A CFU/m³ figure is therefore not comparable between two surveys unless the reporting laboratory states the air volume it sampled and over what period.
The certificate that can be sought on top of that guideline is an administrative process in its own right, and how the voluntary certificate route works and what conditions attach to it.
Technical Guidelines for Indoor Air Quality for Healthy Life, Doc Ref DM-HSD-GU119-IAQ, Version 4, issue date 11 December 2024, Health and Safety Department, sixty-three pages, superseding the issue of 10 July 2024.
Indoor environments of all kinds of public facilities, installations and buildings occupied by persons, except those exclusively dedicated to the industrial and medical sectors.
Tested prior to occupancy: total fungal counts 500 CFU/m³, total bacterial counts 500 CFU/m³, TVOC 300 μg/m³ over 8 hours, formaldehyde 0.01 ppm over 8 hours with a short-term maximum of 0.08 ppm (0.1 mg/m³) over 30 minutes, PM2.5 35 μg/m³ over 24 hours, PM10 150 μg/m³ over 24 hours, lead 0.15 µg/m³ over 3 months. The guideline states this limit without specifying a sampled air volume or a sampling duration, so a CFU/m³ figure is only comparable between surveys if the reporting laboratory states the air volume it sampled and over what period.
Total fungal counts 500 CFU/m³, total bacterial counts 1,000 CFU/m³, carbon dioxide 800 ppm over 8 hours, TVOC 0.6 mg/m³ over 8 hours, PM2.5 35 μg/m³, PM10 150 μg/m³. The guideline states this limit without specifying a sampled air volume or a sampling duration, so a CFU/m³ figure is only comparable between surveys if the reporting laboratory states the air volume it sampled and over what period.
Applying to all new and existing buildings: dry bulb 22.5–25.5 °C, relative humidity 20–60% subject to the stated temperature-dependent ceilings, air movement 0.2–0.3 m/s, with the HVAC system to be capable of the range for 95% of the year.
Testing by a company or laboratory accredited by the Emirates International Accreditation Centre, compliant results submitted to DM, and calibration certificates kept in a register checkable by DM as a condition of renewal.
Dubai Municipality's Technical Guidelines for Indoor Air Quality for Healthy Life (Doc Ref DM-HSD-GU119-IAQ, Version 4, 11 December 2024) sets total fungal counts of 500 CFU/m³ for both new buildings (Table 1) and existing buildings (Table 2); total bacterial counts of 500 CFU/m³ (new) and 1,000 CFU/m³ (existing); and, in Table 3, dry bulb temperature of 22.5–25.5 °C, relative humidity of 20–60% subject to the stated temperature-dependent ceilings, and air movement of 0.2–0.3 m/s. Section 9-8-3 opens: "The buildings which optionally apply the following procedures will be awarded indoor air quality certificate by Dubai municipality." The guideline states these microbiological limits without specifying a sampled air volume or a sampling duration for them — the Average Time column is left blank for total bacterial and total fungal counts, whereas every chemical and particulate limit in the same table carries one. Section 9-8-7 sets only a general sampling period, that measurements should be made on an 8-hour basis except where otherwise specified with an accepted surrogate of four averaged half-hour measurements, and does not assign that basis to culture-based sampling; no sampler type, flow rate, culture medium or incubation regime is given. The guideline requires only that testing be carried out by a laboratory accredited under the Emirates International Accreditation Centre (EIAC) scheme on calibrated equipment. A CFU/m³ figure is therefore not comparable between two surveys unless the reporting laboratory states the air volume it sampled and over what period.
These are the values Dubai Municipality's indoor air quality guideline sets for buildings that opt into its indoor air quality certificate. The guideline describes itself as guidance rather than as a binding standard, and the certificate route is expressly optional. They are a published reference point within a voluntary Dubai Municipality scheme, not an enforceable UAE limit.
Yes. Section 9-8-3 opens with the sentence "The buildings which optionally apply the following procedures will be awarded indoor air quality certificate by Dubai municipality." The section describes a route a building may elect to follow and the consequence of following it.
Because those directive sentences sit inside the certificate procedure, which a building elects into. They set out the terms of the option rather than a general obligation on every building. Where the subject changes, so do the verbs: remedial action on failed areas is put as should, and re-measurement afterwards as may.
No. Total fungal counts are 500 CFU/m³ in both Table 1 and Table 2. The bacterial count is the only difference between the tables for the parameters they share, at 500 CFU/m³ for a new building and 1,000 CFU/m³ for an existing one. The guideline states this limit without specifying a sampled air volume or a sampling duration, so a CFU/m³ figure is only comparable between surveys if the reporting laboratory states the air volume it sampled and over what period.
The guideline states that testing is to be carried out by an air testing company or laboratory accredited by the Emirates International Accreditation Centre, and that compliant test results are to be submitted to Dubai Municipality.
It is qualified by the note "Never to exceed 56%RH at 80F (27C) and 86%RH at 67F (19C).", which makes the permitted humidity depend on temperature. Sixty per cent is not available at every temperature within the band, and the qualifier is often dropped when the figure is repeated.
No. Air sampling characterises air at a moment in a location. A result below the table figure in a building with growth concealed behind a lining is a measurement of the wrong thing, and it says nothing about the concealed reservoir.