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Building plan approval is permission to build from submitted plans; an occupancy certificate is a post-construction document relevant to whether a building or part of it may be occupied. Neither label alone proves that a finished home matches the approved plans. Before buying, check the actual certificate, its scope and conditions, and the property’s records with the authority responsible for that location.
What each document establishes
| Document | When it applies | What it addresses |
|---|---|---|
| Building plan approval | Before the approved construction work proceeds | The authority’s permission for proposed work shown in submitted drawings. It does not establish that the finished building was built as approved or may be occupied. |
| Completion certificate | After construction | Whether the development was completed in accordance with the sanctioned plan, layout plan and approved specifications. |
| Occupancy certificate | After construction, under the applicable local process | The authority’s post-construction permission or finding relevant to occupation. The Ministry of Housing and Urban Affairs’ RERA FAQ describes occupancy in relation to a habitable building or apartment with civic infrastructure such as water, sanitation and electricity. Read the Ministry FAQ. |
Some jurisdictions issue one document that performs both completion and occupancy functions. The Ministry FAQ recognizes this possibility. Read the certificate and confirm its coverage with the issuing authority rather than assuming its title tells you everything.
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How the approval and certification process fits together
- Plans are submitted and reviewed. If approved, they establish the permitted proposal, subject to the approval and applicable rules.
- Construction proceeds. Proposed changes may require revised plan approval; Goa’s local FAQ, for example, describes approval requirements for certain changes. See Goa’s building FAQ.
- Completion is reported and checked. Depending on local procedure, the authority may review completion or as-built drawings, supporting documents and the site.
- The authority issues, refuses or conditions the relevant document. The result and any steps for addressing objections depend on the governing local rules.
The Ministry’s Model Building Bye-Laws describe inspection after notice of completion and require fire clearance for certain categories of buildings. They include model review periods of 30 days for plotted development and 60 days for group housing, subject to exceptions. These are provisions in the 2016 model text, not guaranteed current deadlines for every municipality. See Chapter 2 of the Model Building Bye-Laws.
Why local rules and certificate scope matter
Certificate names, application steps, inspections and supporting records vary by jurisdiction and building category. Official examples illustrate those differences; they should not be treated as one national procedure.
- Goa: The local FAQ describes an occupancy application supported by completion documentation and applicable NOCs, followed by inspection. Its deemed-occupancy language is local and should not be applied elsewhere. Goa building FAQ.
- Hyderabad: HMDA describes submission of as-built drawings after construction, document scrutiny, site inspection and review of deviations against the sanctioned plan. HMDA occupancy procedure.
- Delhi: DDA guidance says a building should not be occupied until an occupancy certificate is granted and describes completion notice, inspection, objection handling and issuance. Confirm current requirements with the responsible authority for the property. DDA building FAQs.
- West Bengal: The state department’s checklist includes the approved plan, building permit, completion plan and other records, with requirements varying by risk category. West Bengal occupancy checklist.
- Patna: The municipal AutoMAP portal presents separate application routes for building-plan approval and occupancy permits. Patna Municipal Corporation AutoMAP.
What homebuyers should ask to see
Request the records relevant to the specific property, then verify them with the issuing authority where possible. This is a practical investigation list, not a universal statutory checklist.
- The authority-approved building plan and building permit, including approved revisions.
- The final occupancy certificate, completion certificate or combined document, including any conditions or limitations.
- Completion or as-built drawings and available inspection or deviation records.
- Locally required NOCs or clearances, including fire clearance where applicable.
- Confirmation that the certificate covers the exact building, block, floor or phase being purchased.
How to check whether the finished home matches approval
Compare the approved plan with the completed property and the available completion or as-built documents. Look for material differences between what was permitted and what exists, and ask the seller for records explaining approved revisions or documented deviations. Plan approval alone is not evidence that the completed work matches the plan. In HMDA’s process, for example, the authority scrutinizes drawings and inspects the site to review deviations; other authorities may follow different procedures.
If a certificate is provisional, missing, limited to another phase, or subject to conditions, do not infer its legal effect from the label alone. Ask the relevant authority or a qualified local property professional how the document applies to that building and purchase. The consequence depends on the location, building facts and governing rules.
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