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RERA carpet area is the better figure for comparing the private size of Indian apartments: compare each unit’s total quoted price against its disclosed RERA carpet area. Treat “saleable area” as a separate figure whose calculation the seller must explain in writing, not as a standard measure of usable apartment space.
At a glance
| Name | Best for | Key spec | Checked |
|---|---|---|---|
| RERA carpet area | Comparing apartment size on a consistent basis | Statutory measure; includes internal partition walls and excludes external walls, service shafts, exclusive balconies or verandahs, and exclusive open terraces | November 2026 |
| Saleable area | Understanding the area figure used in a particular seller’s quotation | No definition in the cited Act provisions; request a written component breakdown | November 2026 |
In practical terms: use RERA carpet area as your common size denominator, keep balcony, verandah and open-terrace areas separate, and compare what each quoted total includes. Do not assume that two saleable-area figures were calculated on the same basis just because both sellers use the same label.
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Which figure should I use to compare two flats?
Use each apartment’s disclosed RERA carpet area as the common size denominator, then compare total quoted prices on that basis. Saleable area may be useful for understanding a particular seller’s stated calculation, but it is not a statutory measure with a uniform definition in the cited provisions.
For a simple comparison, divide each unit’s total quoted price by its RERA carpet area. This gives you a price-per-carpet-area figure for comparing those quotations; it is a buyer’s calculation, not a price formula set by the Real Estate (Regulation and Development) Act, 2016. Apply the same approach to both flats and confirm that the quoted totals cover comparable items. If the quoted prices include different charges or terms, note that separately rather than assuming the area calculation accounts for the difference.
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The point of this calculation is consistency, not a claim that price per square unit of carpet area is the only measure of value. It puts two quoted prices over the same kind of area figure. It does not establish that the apartments are identical in quality, location, layout or terms, nor does the Act prescribe a universal weighting for those trade-offs. Use it as one comparison tool alongside the unit documents and the features that matter to your household.
Keep balconies, verandahs and open terraces in view, but compare them as separate features. They are excluded from RERA carpet area, and the Act requires applicable exclusive areas to be stated separately in project-registration information. A larger terrace may matter to your decision, but it does not increase the apartment’s statutory carpet-area figure.
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Likewise, a higher saleable-area figure does not by itself tell you that a flat offers more private interior area. First find the RERA carpet area for that specific apartment. Then ask what the seller has included in the other number and evaluate any shared facilities or accessory spaces separately.
What does RERA carpet area include and exclude?
Section 2(k) of the Act defines carpet area as “the net usable floor area of an apartment, excluding the area covered by the external walls, areas under services shafts, exclusive balcony or verandah area and exclusive open terrace area, but includes the area covered by the internal partition walls of the apartment.” Read the Act’s section 2 definitions alongside that wording.
That definition means RERA carpet area is not simply the clear floor space available to walk on. The area covered by internal partition walls is included, while external walls and service shafts are excluded. Exclusive balconies or verandahs and exclusive open terraces are also excluded. The Act’s explanation says these accessory spaces must be appurtenant to the apartment’s net usable floor area and meant for the allottee’s exclusive use.
The distinction matters when you read a plan or compare figures. “Carpet area” has a statutory boundary; it does not mean every surface inside the apartment that feels usable, and it does not include every space attached to a unit. Internal partition walls are expressly included even though they are not clear walking floor. Conversely, the specified external-wall and service-shaft areas are excluded. Avoid substituting a casual understanding of “usable” for the elements in the legal definition.
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Balcony, verandah and open-terrace space should not disappear from your decision just because it is excluded from carpet area. Record it separately if it is relevant to the way you expect to use the apartment. That keeps the comparison honest: the interior measure remains comparable, while the additional exclusive space is assessed as its own feature rather than quietly added to one unit’s carpet-area denominator.
Section 4(2)(h) requires the promoter’s project-registration materials to state the number and type of apartments and their carpet areas, as well as exclusive balcony or verandah areas and open-terrace areas where applicable. The Gazette-hosted text of the Act contains the statutory provisions. These disclosures give a buyer a more consistent starting point than an unexplained saleable-area number.
What does “saleable area” mean?
In the cited Act provisions, “saleable area” and “super built-up area” are not given statutory definitions. The Act does define common areas, including such shared parts as stairs, lifts, lobbies and shared facilities; it does not set a universal formula for adding those areas to an apartment’s saleable figure.
Do not assume every promoter calculates saleable area the same way. Ask for the calculation in writing: what area is being used as the base, what loading or proportionate shared-area components are added, and which facilities or common portions those components refer to. Then compare that explanation with the project disclosures and sanctioned plans. A saleable figure should not be treated as the apartment’s private usable area merely because it is the larger number in a quotation.
The phrase can be useful as a seller’s description of a particular calculation, but the label alone does not tell you the calculation. One seller may explain a figure using a specified proportionate common-area component; another may provide a different breakdown. Without the components, you cannot tell whether the figures are comparable. Ask the seller to identify the base area and each addition rather than relying on a verbal assurance that “saleable” means the same thing everywhere.
A government NBCC application for the Sarojini Nagar redevelopment illustrates why the written basis matters: that project describes built-up area using usable or carpet area plus specified proportionate common-area loading and shared facilities. It is a project-specific description, not a universal saleable-area formula. See the NBCC application form for its stated terms. The example is useful precisely because it is specific to that project; it should not be used to infer the components or percentage for another apartment.
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The same caution applies when a quotation uses “built-up area” or “super built-up area.” The cited Act provisions do not establish those labels as synonyms for RERA carpet area or prescribe a common conversion between them. Ask which exact figure the quotation uses, how it was calculated for this unit, and where the corresponding details appear in the project documents. Do not convert one label to another using an assumed ratio.
No typical carpet-to-saleable-area gap should be assumed from the Act. The central provisions discussed here do not prescribe a universal loading percentage, and a project-specific example cannot establish a national norm. If a seller gives you a percentage, request the underlying calculation and its project documentation rather than treating the percentage as a standard that applies elsewhere.
How do I compare two apartments step by step?
- Find the area for each specific unit. Look for the unit’s RERA carpet area in the project’s official disclosures and agreement documents. Check that you are comparing the intended units, not a sample floor plan or a general project figure. Record the unit identification alongside the area so you can trace the number back to the right apartment.
- Put the quoted totals on a consistent basis. Divide each total quoted price by that unit’s RERA carpet area. Keep the calculation method consistent, and note any differences in what each quoted total includes. This is a comparison calculation for the quotations in front of you, not a price rule under the Act.
- Record accessory areas separately. Note any exclusive balcony or verandah and open-terrace area stated for each unit. Do not add those figures to carpet area when comparing the statutory area measure. Consider what those spaces mean to you as distinct apartment features.
- Request a written saleable-area breakdown. Ask what the number includes and how any loading or shared-space component is calculated. If the seller cannot explain the basis clearly, avoid treating it as directly comparable with another seller’s saleable-area figure. Keep the answer with the quotation so you can distinguish a documented calculation from a label alone.
- Check the plans and project information. Compare the unit layout with the sanctioned plans and the project’s disclosures. The Act gives allottees an entitlement to relevant information about sanctioned plans, layout plans, specifications and other information provided for under the Act and related rules or regulations. Use the unit-specific documents where available, and ask how a quoted figure relates to the plan.
- Assess the layout and shared facilities on their own merits. Compare room arrangement and the usefulness of shared facilities for your household. A price-per-carpet-area calculation helps organize the comparison; it cannot decide whether one layout or set of common facilities suits you better. The Act does not prescribe a universal weighting for these trade-offs.
A simple comparison worksheet can keep the categories from getting mixed together. For each apartment, note the unit identifier, disclosed RERA carpet area, total quoted price, the calculation of total price divided by carpet area, separately stated balcony/verandah and open-terrace areas, and the seller’s written explanation of saleable area. Add a note on what the quoted total includes, then review the plan and layout. This is a way to organize the figures, not an additional statutory form or formula.
What should I ask the seller to clarify?
Ask the promoter or seller to identify the unit’s RERA carpet area and the separately disclosed exclusive balcony, verandah or open-terrace areas, if applicable. Request the saleable-area calculation in writing, including its components and any common-area loading, and ask where the relevant figures appear in the project disclosures and sanctioned plans.
To make the request precise, you can ask: “What is the RERA carpet area for this exact unit?” “What area has been used as the base for the saleable figure?” “What components or proportionate shared areas have been added?” “Where are the exclusive balcony, verandah or terrace areas stated?” and “Which plan or project disclosure should I use to verify these figures?” These questions do not assume a particular saleable-area formula; they ask the seller to identify the one being applied.
Compare the response with the project documents rather than relying on the headline number in an advertisement or quotation. If a figure in the quotation does not match the project disclosure or plan, ask for the discrepancy to be explained before relying on it. The Act provides allottees access to relevant information about sanctioned plans, layout plans, specifications and other information contemplated by the Act and related rules or regulations; keep the supporting documents with the quotation and agreement.
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For an actual purchase, check the project and unit against the relevant state or union-territory RERA records and review the agreement and sanctioned plans. The provisions discussed here are from the India-wide central Act. State rules, regulator practices and project documents can add details, so the exact records and documents for the project matter. If an actual unit measurement, plan or agreement is disputed, a locally qualified property lawyer or measurement professional may be relevant.
What can area figures tell me—and what can’t they?
RERA carpet area provides a defined basis for comparing apartment size. A saleable-area figure may communicate a seller’s project-specific calculation, but without its written components it cannot tell you how much private apartment area you are getting or whether another project calculated its figure the same way.
Nor does a single area ratio establish which flat is a better fit. Compare the unit’s room arrangement and accessory spaces alongside its carpet area, and consider shared facilities separately. The Act does not prescribe a universal weighting for these trade-offs. A buyer choosing between apartments still has to decide how the disclosed areas, layout and shared facilities fit their own needs.
Area figures also cannot, by themselves, resolve a mismatch between a quotation, an agreement and a plan. They tell you what is stated in those documents; the unit-specific disclosure and sanctioned plan help you check the context. If the terms appear inconsistent, ask for clarification and review the relevant records before treating one figure as definitive.
Common comparison mistakes to avoid
- Comparing unlike denominators. A price divided by one unit’s carpet area cannot be compared fairly with another price divided by its saleable area. Use the same denominator for both calculations.
- Assuming saleable area has one standard formula. The cited Act provisions do not define it. Get each seller’s written component breakdown before comparing the labels.
- Adding a balcony or terrace to carpet area. Exclusive balconies, verandahs and open terraces are excluded from the statutory figure. Record them separately rather than changing the denominator.
- Reading “carpet” as unobstructed walking space. Internal partition-wall area is included in the legal definition. The measure is not identical to clear floor space.
- Assuming an advertised loading percentage is universal. The Act does not set one general percentage. Ask for the project-specific calculation and do not apply it to another seller’s figure without documentation.
- Letting one ratio decide the purchase. The calculation is useful, but it does not account for whether a layout, accessory space or shared facility is more useful to your household.
What should I remember before comparing?
Start with the unit-specific RERA carpet area in official project and agreement documents. It is the defined common size measure: internal partition walls are included; external walls, service shafts and exclusive balcony, verandah and open-terrace areas are excluded. The latter spaces should remain visible in your comparison as separate features.
Divide each quoted total price by its carpet area only after checking that you have applied the same approach to both apartments and noted differences in what the totals include. Treat the result as a buyer’s calculation, not a statutory price formula. Ask for a written saleable-area calculation, inspect the project disclosures and sanctioned plans, and do not infer a universal loading or conversion from the label alone.
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Frequently Asked Questions
Does carpet area include the thickness of internal walls?
The Act’s definition includes the area covered by internal partition walls, so carpet area is not limited to unobstructed floor surface. It excludes the area covered by external walls.
Is super built-up area the same as saleable area under RERA?
The cited Act provisions do not define either term or establish them as equivalent. Ask the seller to identify the term used in the quotation and provide its written calculation, including any stated common-area component.
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Can a balcony be counted in RERA carpet area?
An exclusive balcony or verandah is excluded from carpet area under the statutory definition. Where applicable, its area is disclosed separately in the promoter’s project-registration information.
Should I compare price per saleable area or per carpet area?
Use RERA carpet area as the consistent denominator for comparing quoted prices. Saleable area can help you understand a particular seller’s calculation, but its components should be explained in writing before comparing it with another project’s figure.
Does the Act set a standard loading percentage from carpet area to saleable area?
The cited provisions do not set a universal saleable-area formula or loading percentage. Ask the seller for the project-specific written calculation; do not assume one percentage applies across projects.
The Bottom Line
Bottom line: Compare apartments using each unit’s disclosed RERA carpet area and calculate quoted price on that same basis. Keep exclusive balconies, verandahs and open terraces separate, and ask for a written explanation of every saleable-area component. The label alone is not a reliable basis for comparing private apartment size.
