What is loading factor?
Also called: loading, loading percentage, common area loading
Loading factor is how much a builder adds to the carpet area to reach the super built-up area, shown as a percentage. With 35% loading, you pay for 1,350 sq ft to get 1,000 sq ft of carpet.
The usual formula is (super area minus carpet area) divided by carpet area. Some brokers calculate it on the super area instead, which makes the same flat look better: 1,350 against 1,000 is 35% loading on carpet but only about 26% of the super area. When someone quotes you a loading figure, ask which way round they worked it out.
In NCR towers the range is roughly 30% to 40%. Builder floors and older low-rise societies in Mumbai's suburbs often sit near 20% to 25%, because there's less lobby, fewer lifts and no clubhouse. Very high loading, 45% or more, usually means large amenity blocks, wide corridors or, occasionally, a builder being generous with itself. It's worth asking for the common area statement that goes to the RERA authority, which lists what has been counted.
Loading isn't a cost in itself. It becomes one because the base price, the PLC, floor-rise charges, IFMS and maintenance are all commonly calculated per sq ft of super area. A five-point difference in loading between two otherwise similar projects can mean several lakh on the purchase and a few thousand every year after.
The cleanest way to compare is to ignore loading altogether and divide the all-inclusive price by the carpet area. Loading only tells you why the answer came out the way it did.
In Noida Sector 150, a 1,600 sq ft super area flat has 1,150 sq ft of carpet, so the loading is about 39%. At ₹9,000 per sq ft of super area the price is ₹1.44 crore, which is roughly ₹12,520 per sq ft of carpet.
Comparing a loading figure worked out on carpet area with one worked out on super area. Recalculate both yourself from the two raw numbers.
Questions people ask about loading factor
What is a good loading factor for a flat?
Around 25% to 35% is normal for a high-rise with basic amenities. Anything over 40% needs an explanation, such as a large clubhouse you actually want.
Does loading factor apply to resale flats?
Yes, if the seller quotes super area. Ask for the carpet area from the original agreement or measure the flat, then work out the loading from those two figures.