Al Sa'fat Green Building Rating System in Dubai: A Guide for Engineers

Al Sa'fat takes its name from palm fronds, the symbols used for its rating levels. Dubai first issued its Green Building Regulations and Specifications in 2010, applying them to government buildings before extending them to every building type. In 2016 those regulations were upgraded into a rating system, and from 19 October 2020 Dubai Municipality's Al Sa'fat system formally replaced the older framework.

The legal instrument is Administrative Resolution No. (154) of 2020, which approved the Bylaw on the Dubai Green Building System. Article 2 obliges every public and private entity to follow the Bylaw when designing, constructing and permitting buildings. The scope covers new buildings, later additions and modifications, and parts of older buildings touched by works that could compromise their energy efficiency. Temporary buildings scheduled for demolition within two years sit outside it.

The technical text in force is the second edition of the system, published by Dubai Municipality in January 2023. Labels such as "Al Sa'fat 2.0" appear in a lot of consultancy material and cause genuine confusion, since that version title belongs to the system document released in 2020. The edition reference on the Municipality's own page is the one to cite in any submission.

Al Sa'fat also works hand in hand with the Dubai Building Code. Dubai Municipality has confirmed that the Silver Sa'fa criteria are integrated into the code, with Gold and Platinum remaining optional.

Managing Al Sa'fat green building compliance in Dubai therefore sits inside the permit workflow itself, alongside structural, fire safety and utility approvals. A green building gap discovered at submission costs the same programme time as a structural or Civil Defence comment.

Silver, Gold and Platinum Sa'fa: How the Tiers Work

Article 5 of the Resolution sets out three classifications. Older articles still describe a four-level system with a Bronze tier; the Bylaw in force names three, and each higher tier builds on the one below it.

•         Silver Sa'fa is mandatory for every building in the emirate. Its certificate is valid indefinitely for private villas and industrial buildings, and for 15 years for all other building types, investment villas included.

•         Gold Sa'fa is optional. A Gold application must satisfy every Gold requirement plus every Silver requirement, including Silver items that would otherwise be optional for villas or industrial buildings. The certificate is valid for five years.

•         Platinum Sa'fa is optional and follows the same cumulative logic, with a five-year certificate.

Indicative energy savings attributed to Dubai Municipality place Silver at up to around 19%, Gold at roughly 32% and Platinum above 35% against the baseline, as summarised in an independent analysis of the regulation. Those differentials explain why some owners pursue a higher tier voluntarily, for operating-cost savings, green financing terms and institutional tenant requirements.

The five-year validity of Gold and Platinum carries an engineering consequence. Renewal depends on the building still meeting the tier's requirements, so metering, controls and maintainable plant become part of the design brief from day one. Owners may also apply to upgrade a certificate later under Article 8, which rewards designs that leave space, structure and electrical capacity for future improvements.

Article 5(b) allows certain Silver requirements to be optional for private villas, investment villas and industrial buildings, as the Bylaw specifies for each item. The relief is narrower than a blanket exemption. A villa brief that assumes full commercial Silver obligations may be over-specified, and a brief that assumes no obligations at all is exposed at permit stage.

Article 7 adds a separate exemption route, available on the owner's request and granted by the Director General or an authorised representative. It applies to three building types:

•         Special-purpose buildings, for which certain requirements are technically infeasible or would harm the building's function.

•         Heritage buildings designated by the Municipality's Architectural Heritage and Antiquities Department.

•         Buildings using new technologies that produce or save energy and water beyond what the standard requirements would achieve.

In each case the Municipality may replace the exempted requirement with an alternative one, so an exemption request needs a technical case prepared alongside the design.

Jurisdiction is the other early check. Al Sa'fat governs plots permitted by Dubai Municipality, while plots in free zones and special development areas may be permitted by another authority with its own sustainability framework. Merka's guide on how DM, DDA and Trakhees submissions differ covers that first question in detail.

Abu Dhabi runs a separate system altogether, the Estidama Pearl Rating System, with its own credit structure and permit minimum. Design teams working across both emirates can find the wider regulatory contrasts between Dubai and Abu Dhabi sites in Merka's site planning article.

The heaviest compliance load sits in energy and envelope performance. Silver compliance is demonstrated through a modelled improvement over a baseline reference building, supported by maximum thermal transmittance (U-values) for walls, roofs and glazing, a ceiling on solar heat gain coefficient (SHGC) and limits on window-to-wall ratio for most typologies.

Technical analyses of the regulation commonly cite the following reference limits:

•         External walls: 0.57 W/m²K

•         Roofs: 0.30 W/m²K

•         Glazing U-value: approximately 1.9 to 2.0 W/m²K

•         Glazing SHGC: 0.28 for a glazed area of 40 to 60%, with the ceiling banded by glazed area

The SHGC band is the figure most often misquoted. Summaries that state one number without its window-to-wall range simplify a value that directly governs façade design, so the band that matches the project's actual glazing ratio has to be read from the Municipality's current tables.

Those limits make glazing ratio and shading concept-stage decisions. A tower with 70% glazing and no external shading must lean on high-performance double or triple glazing to meet the SHGC ceiling, while the same tower with deep reveals or fins can specify glass for daylight and view. Our architectural design process sets envelope targets before massing is frozen for exactly that reason.

The Lattice Tower Hotel concept designed for Business Bay shows the approach at high-rise scale. A geometric exoskeleton wraps every elevation, and the lattice was developed as an integrated shading system for the guest rooms, reducing direct solar gain on the glazing behind it.

At mid-rise scale, the Creekside Curved Residences conceptualized for Dubai Creek Harbour use sculpted balcony edges and expansive terraces that overhang the glazing line. The concept pairs those projections with an energy-conscious façade orientation, so generous glazing and outdoor living space sit comfortably within a green building brief.

Orientation, self-shading and thermal mass all reduce the cooling load before any equipment is sized. Merka's article on passive strategies for hot-climate buildings covers those tools in depth.

Thermal limits also interact with other envelope rules. The separate guide to Dubai façade regulations explains how Al Sa'fat thermal performance sits alongside cladding fire safety, glazing orientation and wind load requirements on tower façades.

Al Sa'fat organises its requirements into five categories, and every discipline on the design team owns part of each one:

•         Ecology and Planning covers site selection, landscape, heat island effects and access to sustainable transport.

•         Building Vitality addresses occupant health and comfort: ventilation, thermal comfort, daylight, acoustics and indoor air quality.

•         Resource Effectiveness: Energy governs envelope performance, HVAC efficiency, lighting and metering.

•         Resource Effectiveness: Water sets fixture performance and alternative water use.

•         Resource Effectiveness: Materials and Waste covers material content, emissions and construction waste.

MEP engineering carries the largest share of the energy category. Cooling is the dominant load in Dubai's climate, so chiller and DX equipment efficiency, controls, zoning and fresh air strategy decide whether the energy model clears its baseline. Minimum equipment efficiencies vary by equipment type, with chiller coefficient of performance (COP) thresholds starting from around 2.8 for some categories, which makes equipment selection a line-by-line exercise.

The energy model and the HVAC design have to describe the same building. When the modeller assumes one cooling load and the mechanical engineer sizes plant to another, the discrepancy surfaces as a Municipality comment. Merka's HVAC load calculation and MEP design team runs both from a shared set of envelope inputs to keep them aligned.

Lighting follows the same discipline. Lighting power density limits, occupancy and daylight controls and exterior lighting spill all feed the energy category, and each fixture schedule needs manufacturer data that matches the calculated values.

Coordinated digital models make that alignment far easier to hold. Merka's piece on BIM coordination across disciplines explains how clash detection and shared models keep insulation thicknesses, duct routes and ceiling voids consistent from design through construction.

Water requirements are set at fixture level. Al Sa'fat caps flow rates for taps and showers and calls for efficient dual-flush toilets, and those limits belong in the plumbing fixture schedule at specification stage. Leaving them to fit-out product selection invites substitutions that fail the flow-rate check.

Alternative water sources carry their own obligations. Greywater recycling or treated sewage effluent used inside a building triggers a separate set of mandatory requirements covering treatment, separation and labelling, so the decision to use them needs to be made while the drainage and plumbing risers are still being planned.

Materials sit across two categories. Low-emission paints, adhesives and sealants protect indoor air quality under Building Vitality, while recycled content, responsible sourcing and construction waste management fall under Materials and Waste. The Municipality continues to strengthen the documentation it expects for material credentials, which moves product evidence from procurement into the design stage.

In practice, a compliant specification names the product category, the emission limit it must meet and the certification the contractor must submit. Merka's guide to specifying concrete, steel, glass and stone for climate durability covers how those performance clauses are written.

Ventilation completes the indoor environment picture. Fresh air rates, filtration and the separation of pollutant sources such as car parks and kitchens are all assessed, and each one has to be traceable from the mechanical drawings to the calculations submitted with the permit.

Al Sa'fat compliance is demonstrated on paper before it is demonstrated on site. The sustainability submission accompanies the permit application and is built around quantified evidence. A working documentation set typically includes:

•         The energy model with its baseline comparison, showing the modelled improvement numerically.

•         U-value calculation sheets for every external wall, roof and floor build-up.

•         SHGC and window-to-wall ratio calculations for each façade, matched to the applicable glazed-area band.

•         Mechanical and electrical equipment schedules carrying efficiency data for chillers, DX units, pumps, fans and lighting.

•         A water fixture schedule with manufacturer data sheets confirming flow rates.

•         A low-emission materials schedule with the product certifications that support it.

Consistency across the set decides how smoothly the review goes. A wall U-value calculated for 200 mm blockwork with 50 mm of insulation has to match the wall section on the architectural drawings, the insulation specification and the input in the energy model. One mismatch is enough to generate a comment and a resubmission cycle.

Merka prepares the calculations, drawings and specifications as one coordinated construction documentation package, so every figure the reviewer checks traces back to a single design source.

Portals, formats and checklists change over time. The Municipality's current guidance is authoritative at the point of submission, and a pre-submission check against it saves weeks compared with responding to comments after the fact.

A compliant permit set is only half the job. Under Article 6, the Municipality's Building Permit Department issues the Sa'fa certificate after verifying that the building meets the Bylaw's requirements, so the as-built building has to match the approved design.

Procurement is the stage with the highest risk. A glazing unit offered at a lower price may carry a higher SHGC, an alternative chiller may sit below the required COP, and a substitute sealant may exceed the emission limit. Cost savings are legitimate, and Merka's article on value engineering decisions made early in design explains how to capture them without eroding performance.

Every submittal therefore gets checked against the Al Sa'fat values in the approved documents before approval. Merka's site supervision and submittal review covers shop drawings, material approvals, testing and commissioning, so the equipment installed is the equipment the energy model assumed.

Commissioning closes the loop. HVAC balancing, controls verification and lighting control testing confirm that systems perform as designed, and the resulting records support both the certificate and any future renewal of a Gold or Platinum rating.

The same compliance gaps appear across project types, and nearly all of them trace back to timing or to outdated references:

•         Treating Al Sa'fat as a submission checklist. Envelope limits, glazing ratios and plant efficiencies are fixed at concept and schematic stage, and a check run after design freeze usually means redesign.

•         Substituting another rating system. LEED and BREEAM run in parallel as optional international certifications, and Abu Dhabi's Estidama applies only in Abu Dhabi. Dubai permits require Al Sa'fat regardless.

•         Working from superseded tiers or editions. Briefs that reference a Bronze tier or treat "2.0" as a new release are working from outdated material.

•         Assuming villas are fully exempt. Article 5(b) makes certain Silver items optional for villas and industrial buildings, and the remaining items still apply.

•         Quoting one SHGC value for every façade. The ceiling is banded by glazed area, and each façade needs the band that matches its own glazing ratio.

•         Leaving procurement unchecked. Unreviewed substitutions are the most common route from a compliant design to a non-compliant building.

Each of these is avoidable when the green building brief is written alongside the structural and MEP briefs, with one engineer accountable for keeping the energy model, drawings and specifications in step.

Merka's structural, MEP and architectural engineers work from a single coordinated model, with Silver Sa'fa targets set at concept stage and carried through permit, procurement and commissioning. Whether the project is a villa, a mid-rise residential block or a high-rise tower, the green building brief is written with the rest of the engineering.

Book a green building compliance review with Merka's engineers and share your plot details, brief and target Sa'fa tier.

Frequently Asked Questions

Is Al Sa'fat mandatory for all new buildings in Dubai? Yes. Administrative Resolution No. (154) of 2020 makes the Silver Sa'fa standard mandatory for all buildings in the emirate permitted under the Bylaw, including additions and modifications. Temporary buildings due for demolition within two years are outside its scope.

What separates Silver, Gold and Platinum Sa'fa? Silver is the mandatory baseline. Gold and Platinum are optional higher tiers, and each requires full compliance with its own requirements plus every requirement of the tiers below it.

How long is a Sa'fa certificate valid? A Silver certificate is valid indefinitely for private villas and industrial buildings and for 15 years for other building types. Gold and Platinum certificates are valid for five years and can be renewed when the building still meets the requirements.

Does Al Sa'fat apply to private villas? Yes, with some relief. Certain Silver requirements are optional for private villas, investment villas and industrial buildings, as the Bylaw specifies, while the remaining Silver requirements apply in full.

Can LEED or BREEAM certification replace Al Sa'fat? No. Both remain optional international certifications that owners may pursue in parallel, while Al Sa'fat compliance is a condition of the Dubai Municipality building permit.

Does Al Sa'fat apply in Abu Dhabi? No. Abu Dhabi applies the Estidama Pearl Rating System, which has its own credits, tiers and permit minimum.