Grade A vs Grade B Office Space: What the Grade Means for Rent, Vacancy and Resale

Grade A office space rents for more, stays fuller and resells to a far deeper pool of buyers. JLL puts rents in aged, outdated buildings 10% to 40% below modern ones in the same location, and a Grade B unit's higher starting yield usually shrinks once you price in longer voids, weaker rent growth and a higher exit yield when you sell.

Key takeaways

• "Grade A" is a market convention, not a regulated label. Check the specification, the owner structure and the building's age, not the brochure.
• City averages hide the grade gap: Knight Frank's Q1 2026 averages run from Rs 74.5 per sq ft a month in Chennai to Rs 125 in Mumbai, and older buildings trade at a discount to those.
• Single-owner buildings command rents up to 32% above strata-sold ones, according to CRE Matrix.
• About 47% of India's office stock is more than ten years old (ANAROCK). Age without a refit is the main route from A to B.
• In our ten-year illustration, a 7% Grade A unit beats a 9% Grade B unit by about Rs 92 lakh on a Rs 1.5 crore outlay, almost all of it at exit.

What the grade actually measures

No law or regulator defines Grade A in India. Consultants and developers use it for buildings with large, column-free floor plates, good floor-to-ceiling heights, full power backup, modern HVAC, professional facility management, adequate parking and, increasingly, a green certification such as LEED or IGBC. Grade B covers functional buildings that miss several of these: older construction, smaller or irregular floors, patchy backup, weaker management.

For an investor, three questions matter more than the label. Who owns the rest of the building? How old is it, and has it been refitted? And would a large company's real estate team shortlist it today? Our checklist for Grade A office space in Gurgaon goes through the specification item by item.

Rent and vacancy, city by city

Published city figures are averages across grades, so treat them as the ceiling a Grade B building works down from. Rents below are Knight Frank's Q1 2026 averages; vacancy is Vestian's March 2025 snapshot, the latest city-by-city split we could verify. Colliers put pan-India vacancy at around 15% in Q2 2026 and Knight Frank at 13.9% in early 2026, so the direction since then is down.

The gap between grades is wider than any gap between cities. JLL's research found aged, outdated buildings renting 10% to 40% below up-to-date, well-managed ones in similar locations; brokers' guides quote Grade B at 30% to 50% below comparable Grade A. In Delhi-NCR, JLL tracked a split even within the top tier, with Grade A+ rents rising from Rs 99.6 to Rs 123.5 per sq ft and Grade A from Rs 79.4 to Rs 93.8, and A+ taking 65% of demand. CBRE said in September 2026 that contiguous Grade A+ space on Golf Course Road, NH-8 and in BKC is scarce, which is what props up premium rents there.

High-vacancy cities punish Grade B hardest. In Hyderabad or NCR, with around a sixth of stock empty in early 2025, a tenant leaving an older building has plenty of newer options at a small premium.

Strata-sold B units against single-owner A buildings

Most Grade B stock an individual can buy is strata-sold: floors or units owned by many investors, each leasing separately. CRE Matrix found single-owner offices renting up to 32% above strata ones. In Mumbai the gap was about 30% in the western suburbs, 27% in the central suburbs and 26% in the CBD, but only about 3% in BKC, where strata buildings are newer and better run. So strata is not automatically Grade B; badly run strata usually is.

The reasons are practical. Leasing terms differ unit by unit, maintenance suffers when some owners don't pay their share, and a large tenant wanting 50,000 sq ft cannot assemble it from twenty landlords. Single-owner Grade A buildings mostly sit with developers, funds and REITs. For a small investor the practical route into them is a listed REIT, which our REIT guide and the sibling post on REITs versus InvITs cover.

Obsolescence and re-leasing risk

Buildings age out of Grade A. ANAROCK estimates 47% of India's office stock is over ten years old, and JLL found 28% of Grade A stock already past a decade without the latest facilities. Tenants have moved the goalposts: Colliers expects green and technology-integrated buildings to take close to 80% of 2026 leasing. JLL's estimates of the green rent premium vary by study, from 9% to 13% (with occupancy 300 to 500 basis points higher) up to 36% in an earlier report, so treat the higher figure with care.

A single owner can refit a lobby, replace chillers and apply for certification. A strata building needs dozens of owners to agree and pay, which is why many never upgrade. The risk shows up at lease expiry: the tenant leaves for a newer building, and the next one wants a lower rent, a rent-free fit-out period, or both.

A ten-year illustration

Compare two Rs 1.5 crore purchases. The assumptions are ours, chosen to reflect the patterns above, not market data for a specific building. Tax and maintenance are ignored for both.

The Grade B unit collects slightly more rent over the decade, and still ends about Rs 92 lakh behind, because buyers price an ageing strata building at a higher yield. Change the assumptions and the gap moves, but the shape rarely does: the extra two points of starting yield are payment for the exit risk.

How easily each one sells

Grade A offices in prime Gurgaon, Mumbai and Bengaluru are priced at yields of about 7.5% to 8.4%; Embassy REIT's recent Pinehurst purchase at Embassy GolfLinks was at a 7.9% cap rate. Buyers include REITs, funds, family offices and investors using lease rental discounting, which lenders price better when the tenant and building are strong. A Grade B unit sells mainly to local investors and owner-occupiers, often at a yield two points higher, and its buyer may find a bank less willing to lend on an older strata building.

When Grade B still makes sense

• You are the occupier. A CA, clinic or small firm using the space cares about cost and location, not institutional appeal.
• The location is irreplaceable and the building is well run, such as an older tower near a metro station with strong local demand.
• You price it for the exit. Buy at a yield that still works if you have to sell at 10% or more.
• The tenant is strong and the lease long. A nine-year lease to a bank branch covers much of the obsolescence risk.

It suits no one relying on the headline yield alone, or buying in a high-vacancy city where newer buildings compete on price. Our office market overview and India's most expensive office markets give the wider context.

Frequently asked questions

Is Grade A office space a better investment than Grade B?

Usually, for anyone holding for more than one lease cycle. Grade A buildings let faster, keep rent escalations and sell at lower yields, around 7.5% to 8.4% in prime markets. Grade B units start with a higher yield but face longer voids and a higher exit yield. They can work for an owner-occupier or when bought cheaply enough to survive a weak resale.

How much lower are Grade B office rents in India?

JLL's research found aged and outdated buildings renting 10% to 40% below modern, well-managed buildings in similar locations, and broker guides quote 30% to 50% below comparable Grade A. The gap is widest in high-vacancy markets such as Hyderabad and Delhi-NCR, where tenants have many newer buildings to choose from, and narrowest in tight markets such as Bengaluru, Chennai and Pune.

Why do single-owner office buildings get higher rents than strata buildings?

One owner means one leasing policy, consistent maintenance and the ability to offer large contiguous floors, which big tenants want. CRE Matrix found single-owner offices renting up to 32% above strata-owned ones, around 26% to 30% in most Mumbai markets, but only about 3% in BKC, where strata buildings are newer and professionally managed.

Can a Grade B building become Grade A again?

Yes, with a serious refit: new lobbies, lifts, chillers, power backup and a green certification. JLL has put the upgrade opportunity across Indian offices at about Rs 45,000 crore. It is far easier in a single-owner building than a strata one, where many owners must agree and share the cost, which is why many older strata buildings never upgrade.

If you are comparing a Grade A and a Grade B office on price and yield, the Realty Hunting team can walk through the lease, the building and the exit with you. Our pre-leased listings show current options with tenants in place.