Green Building Ratings in India: IGBC and GRIHA Explained

Walk through any new residential launch in Ahmedabad, Pune, Bengaluru or Surat and the brochure will probably carry a green badge: IGBC Gold, GRIHA 4 Star, LEED Platinum, or simply "green certified". For most buyers these labels are vague. They sound good, they may come with a slightly higher price, and almost nobody asks what they actually measure, who issued them, or whether the building has been certified at all or only registered with a promise to comply.

That vagueness is a missed opportunity. A properly rated green building usually means lower electricity and water bills, better daylight and fresh air, shaded windows, fewer harmful chemicals in finishes and a healthier site. Those benefits are real and measurable. But the rating systems are also complex, they come in many versions and programmes, and a pre-certificate issued at design stage is not the same as a final certificate issued after construction. Homeowners, business owners and students who understand how the systems work can read a brochure critically, design better buildings and choose interiors that support the rating rather than undo it.

This article explains India's two main home-grown rating systems, IGBC and GRIHA, along with the international LEED system that is also used in India; how they score buildings; the process and timeline of certification; what green features cost in October 2026; how to verify a claim; and where green building rating in India is going. It is general information to help readers ask good questions; the official rating manuals are the final word on any requirement.

Where green building ratings came from

Green building rating systems began in the 1990s as a way to make sustainability measurable. The United Kingdom's BREEAM, launched in 1990, was the first widely used system. In the United States, the U.S. Green Building Council launched LEED (Leadership in Energy and Environmental Design) in 2000, and its points-based approach — credits for site, water, energy, materials and indoor quality, adding up to a certification level — became the model that much of the world followed.

India took two paths at once. In 2001 the Confederation of Indian Industry formed the Indian Green Building Council (IGBC). Its own office, the CII–Sohrabji Godrej Green Business Centre in Hyderabad, was one of the earliest buildings in India to receive a LEED Platinum rating, in the early 2000s, and it became a demonstration of what was possible in an Indian climate. IGBC then developed its own rating systems for Indian conditions, starting with commercial buildings and homes. In parallel, The Energy and Resources Institute (TERI) developed GRIHA — Green Rating for Integrated Habitat Assessment — which the Ministry of New and Renewable Energy adopted as the national rating system in 2007. The same year the Bureau of Energy Efficiency launched the Energy Conservation Building Code (ECBC) for commercial buildings, the first national energy code for buildings.

The codes and the ratings work together. ECBC, revised as ECBC 2017, sets minimum energy performance for commercial buildings above a threshold connected load (100 kW) or contract demand (120 kVA), and states adopt it into their building rules. The Eco-Niwas Samhita, launched by the Bureau of Energy Efficiency in 2018, sets envelope requirements for residential buildings, including a limit on heat gain through walls and windows. The National Building Code of India 2016 added Part 11, Approach to Sustainability. The ratings sit on top: they are voluntary, they cover far more than energy, and they reward going beyond the minimum.

IGBC explained

The Indian Green Building Council, part of the Confederation of Indian Industry, runs a family of rating systems tailored to building types. Each is a points-based checklist: a project must meet a set of mandatory requirements, then earns credits in several categories, and the total decides the certification level. The levels are Certified, Silver, Gold and Platinum, and for many IGBC systems the bands begin at roughly 50, 60, 70 and 80 points out of 100; some newer systems add a higher tier. Thresholds and credits change between versions, so the current abridged reference guide for the specific system is the document to check.

The IGBC Green Homes system groups its credits under headings such as site selection and planning, water conservation, energy efficiency, materials and resources, indoor environmental quality, and innovation. In practice that means credits for things a homeowner can see — rainwater harvesting, water-efficient fixtures, solar water heating or photovoltaics, efficient lighting and appliances, daylight and ventilation in rooms, low-VOC paints and adhesives, waste segregation — and things they cannot, such as the energy model of the building envelope or the construction waste plan.

GRIHA explained

GRIHA was developed by TERI and adopted by the Ministry of New and Renewable Energy as India's national rating system in 2007. It is now administered by the GRIHA Council. Where IGBC uses metal levels, GRIHA awards one to five stars. In recent versions, the bands are roughly 25–40 points for one star, 41–55 for two, 56–70 for three, 71–85 for four and 86 or more for five, out of a base of 100, with a few extra points available for innovation. Again, the current manual is the authority on exact values.

GRIHA's sections follow the life of a building: sustainable site planning, construction management, energy optimisation, occupant comfort, water management, solid waste management, sustainable building materials, life-cycle costing, socio-economic strategies and performance metering. It places weight on actual performance, with metering of energy and water. GRIHA also has a family of variants: a simplified system for small projects (SVAGRIHA), versions for large developments, existing buildings and affordable housing, and frameworks for cities. Central government departments and several states require or encourage GRIHA ratings for public buildings, which is why the star rating appears on many government offices, campuses and hospitals.

What the ratings actually check

Behind the different names, the systems check the same five things, and understanding them is more useful than memorising credit numbers. Site: is the project on a sensible site, does it protect soil and trees, does it manage rainwater and heat islands, is it near public transport? Energy: is the envelope designed for the climate, are windows shaded, are lighting, air-conditioning, pumps and lifts efficient, is there renewable energy? Water: are fixtures water-efficient, is rainwater harvested, is wastewater treated and reused? Materials: are local, recycled and low-emission materials used, and is construction waste managed? Indoor environment: do rooms get daylight and fresh air, are paints and adhesives low in volatile organic compounds, is noise controlled?

How certification works, step by step

Certification is a process that runs alongside design and construction, not a test at the end. The developer or owner registers the project with IGBC or GRIHA, appoints a team (often with an accredited professional or consultant), designs to meet the mandatory requirements and target credits, submits design-stage documentation, and — in many programmes — receives a pre-certification or provisional rating. After construction, the team submits as-built documentation, test results and site evidence, the rating body reviews it, often with a site visit, and issues the final certificate. Registration and certification fees are published by each organisation, usually in slabs by built-up area.

The timing of the badge matters to buyers. A housing project marketed at launch can usually only show registration or a pre-certification, because the building does not yet exist. A pre-certificate says the design, if built as described, is expected to earn a level; it is a useful sign of intent, but the final certificate is what proves it. A careful buyer asks the developer to commit in the agreement to pursuing final certification and to sharing the certificate on completion.

For homebuyers: how to read and verify a green claim

Green claims in brochures range from rigorous to meaningless. A phrase such as "eco-friendly design" or "green living" is marketing; a statement such as "IGBC Green Homes Gold, final certificate, issued in a stated year" is verifiable. The checklist below separates the two.

It is also worth knowing what a rating does not cover. A green rating does not certify structural safety, legal title, RERA compliance or the quality of the interior work. A green-rated building can still have leaking bathrooms; a non-rated building can still be well designed. The rating is evidence about environmental performance, not a general quality stamp.

Interiors that support a green rating

Interiors can either reinforce or quietly undo a building's green performance. A flat in a rated building that is fitted out with high-VOC adhesives, full-height curtains closed against the daylight, old fixed-speed ACs and 6500 K tube lights has lost most of its advantage. For commercial fit-outs, IGBC Green Interiors offers a way for a tenant to certify its own space. For homes, the principles are the same even without a certificate, and Aaditya Interior follows them as a default in specifications: low-emission boards and finishes, efficient lighting with controls, BEE star-rated appliances, water-efficient fittings and layouts that keep daylight and cross-ventilation working.

Where green rating in India is going

Three shifts are already under way. The first is from green to net zero: IGBC's net-zero programmes and similar frameworks ask buildings to balance energy, water or waste over a year, not merely reduce them. The second is from operational to whole-life carbon: as buildings become more efficient to run, the carbon embodied in cement, steel, glass and aluminium becomes a larger share of their footprint, and ratings are beginning to reward low-carbon materials and reuse. The third is towards health and wellbeing, with ratings that measure air quality, daylight, acoustics and access to green space as outcomes for occupants.

At the same time, the line between voluntary rating and mandatory code is moving. ECBC is being adopted by more states for commercial buildings, the Eco-Niwas Samhita brings envelope requirements into housing, and the 2022 amendment to the Energy Conservation Act extended the scope of building codes towards sustainable buildings more broadly. Over the next decade, measures that earn credits today — shaded glass, insulated roofs, efficient equipment, rainwater harvesting — are likely to become baseline expectations, and the ratings will move on to harder targets.

Rules for using green ratings well

• Decide the target rating and level at concept stage, when credits cost least.
• Read the current manual for the exact programme and version; do not rely on generic point bands.
• Meet every mandatory requirement first — missing one means no rating at any score.
• Design the envelope for climate before adding equipment: shading, insulation, glass choice.
• Treat a pre-certificate as a promise and ask for the final certificate at completion.
• Verify claims on the rating body's website and ask for programme, level, stage and date.
• Keep interiors consistent with the rating: low-VOC finishes, efficient lighting and ACs, efficient fittings.
• Remember what a rating does not cover — structure, legal title and workmanship need their own checks.

Frequently asked questions

What is the difference between IGBC and GRIHA?

IGBC is run by the Indian Green Building Council, part of the Confederation of Indian Industry, and uses Certified, Silver, Gold and Platinum levels across many programmes; it is widely used by private developers. GRIHA was developed by TERI, adopted by the Ministry of New and Renewable Energy as the national rating system, and uses one to five stars; it is common on government and public buildings and is used by private projects too. Both assess similar categories, but their credits and baselines differ.

Is green building certification mandatory in India?

Voluntary ratings such as IGBC and GRIHA are generally not mandatory for private homes, though some public bodies require ratings for their own buildings, and some states and cities offer incentives for rated projects. Energy codes are different: ECBC for commercial buildings and the residential Eco-Niwas Samhita become mandatory where states adopt them into their building rules.

Does a green-rated flat cost more?

It can carry a small premium, but much of a green rating comes from good design rather than expensive equipment — orientation, shading, daylight and water-efficient fittings. Residents usually recover part of any premium through lower electricity and water bills, though the amount depends on the building and on how it is used.

How can I check whether a project is really IGBC or GRIHA certified?

Ask the developer for the certificate showing the programme, level, stage and date, and check the project against the lists published by IGBC or GRIHA. Be clear whether it is a pre-certification at design stage or a final certificate after construction.

Can an individual flat be green certified?

Rating systems generally certify whole buildings or projects rather than single flats in a larger building. An owner can still apply the same principles to their own interior — low-VOC finishes, efficient lighting and ACs, water-efficient fittings — and benefit from them, even without a certificate.