Three certificates determine whether a Lower Parel or Prabhadevi flat is legally occupiable, mortgageable and resaleable: the Commencement Certificate (CC), the Occupancy Certificate (OC), and the Part-OC. Buyers in this corridor routinely conflate them — a confusion that costs lakhs in stamp duty, GST, and society-formation delays. Property Butler tracks 410 active Lower Parel and 575 active Prabhadevi listings as of May 2026, and approximately 12-15% of those listings sit on Part-OC or CC-only status. This decoder explains exactly what each certificate authorises, what it does not, and the buyer due-diligence playbook for every certificate state in this corridor.
Property Butler — Certificate State Snapshot
CC (Commencement Certificate): permits construction, not occupation | Part-OC: permits occupation of specified floors only | Full OC: permits occupation of entire building, enables society conveyance | Active LP / Prabhadevi listings on Part-OC: ~80-110 units | Average premium of full-OC over Part-OC on same project: 4-9%.
What Each Certificate Actually Means
The three certificates are issued at different stages of a building's life by the Bombay Municipal Corporation (BMC) Building Proposal Department. Understanding the sequence is the first step:
| Certificate | Issued When | What It Authorises | Buyer Action |
|---|---|---|---|
| CC (Commencement) | Before construction starts | Permits builder to start construction | Pre-launch / under-construction booking; no occupation |
| Plinth CC | After plinth-level work | Permits superstructure above plinth | Mid-construction marker; banks pre-approve loans |
| Floor-wise CC | As construction reaches each floor | Permits next floor construction | Pace marker; check for stalled CC issuance |
| Part-OC (Partial) | After lower-floor completion | Permits occupation of named floors only | Restricted handover; full-OC still pending |
| Full OC (Occupancy) | After building completion | Permits occupation of entire building | Society formation, conveyance possible |
The non-obvious item is that a building can be sold at any certificate stage, but the certificates each carry different legal-and-financial consequences for the buyer. A flat sold during CC stage requires full possession via subvention or self-funded payment until OC. A flat sold during Part-OC stage permits occupation but cannot get society conveyance until full OC arrives. A flat sold post full-OC is the cleanest state — bank loan disbursement is straightforward, occupation is legal, society formation is permitted.
The Part-OC Trap — Where Buyers Lose Money
Part-OC is the most-misunderstood state in this corridor. It is issued when lower floors of a multi-phase tower are complete and habitable while upper floors are still under construction. The BMC permits occupation of the lower floors but withholds full OC until the entire building is structurally complete. For the buyer, this creates four practical problems:
Part-OC Buyer Risks
- Society cannot be formed until full OC arrives — no society NOC for resale, no maintenance billing structure
- Bank loan disbursement constrained — some banks (HDFC, SBI) require full OC for final tranche
- Property tax assessment delayed — BMC issues property tax notice only post full OC
- Resale at Part-OC stage trades 4-9% lower than identical full-OC stock in same project
Part-OC Buyer Advantages
- Lower entry price — sellers often discount Part-OC stock by 4-9%
- Legal occupation — unlike CC-only stock, you can move in
- Stamp duty + registration possible — agreement-for-sale + sale-deed both registerable
- Arbitrage at full OC — when builder secures full OC, value uplifts 4-9% within 1-2 quarters
Property Butler's experience with Part-OC transactions in Lower Parel and Prabhadevi: the structural arbitrage is real when the project is from a Tier-1 builder with clean RERA milestones and a credible path to full OC within 6-15 months. The risk is real when the builder is from the second tier with execution slippage history — Part-OC can sit for 24-48 months while construction stalls, and the buyer loses society-formation, conveyance, and resale optionality for the entire stretch.
The CC-Only Sale — Subvention, Pre-Launch, and Direct Allotment
A CC-only sale is a pre-launch or under-construction transaction where the building does not yet have OC. The buyer pays in milestones tied to construction progress; the builder issues an allotment letter, then progresses to agreement-for-sale registration, and finally to sale-deed registration post OC. Three structural variants exist:
- Direct allotment with no possession until OC: Standard structure. Buyer pays 20-25% as token, balance in construction-linked milestones. Possession only after full OC. Risk: full builder execution risk; no occupation rights pre-OC.
- Subvention scheme (interest-free EMI till possession): Builder bears EMI on bank loan until possession; buyer pays only after OC. Common with Lodha and Indiabulls. Risk: if builder fails subvention obligation, EMI shifts to buyer; bank still recovers from buyer.
- Construction-linked plan (CLP) with self-EMI: Buyer takes bank loan from day 1, pays EMI through construction. Standard with Tier-1 brands on launches under ₹5 Cr. Risk: 18-30 months of EMI on under-construction stock.
Verification Checklist — What to Demand from Seller
For any LP / Prabhadevi flat purchase regardless of certificate stage, demand these documents in original or certified copy:
Property Butler Verification Stack
- BMC Commencement Certificate (CC) with floor-wise revisions — should match current construction level
- MahaRERA registration certificate + latest quarterly progress report
- OC / Part-OC if issued — verify on BMC online portal independently
- Sanctioned building plans — match flat carpet area, layout, FSI used
- Original allotment letter from builder (for resale of under-construction stock)
- Original agreement-for-sale registered with sub-registrar
- NOC from builder for resale if under-construction
- Latest society maintenance bill (post full-OC) — verifies society formation
- Index II from sub-registrar verifying registered conveyance chain
- Encumbrance certificate from sub-registrar — last 30 years
The BMC online verification portal is the single most important step. The certificate seller produces must match what BMC's records show online. Builders occasionally produce CC or OC documents that have been amended or revoked — checking the BMC portal independently catches this. For Lower Parel and Prabhadevi properties, the BMC G-South ward (Lower Parel, Worli, Prabhadevi) office in N. M. Joshi Marg holds the master files; certified copies of CC and OC are obtainable for ₹500-1,500.
Specific LP / Prabhadevi Project Certificate States — May 2026
| Project | Locality | Certificate State (May 2026) |
|---|---|---|
| Lodha World Crest | Lower Parel | Full OC, society formed |
| Lodha World One | Lower Parel | Full OC, society formed |
| Lodha Vista | Lower Parel | Full OC, conveyance pending |
| Indiabulls Sky Forest | Lower Parel | Full OC, society formed |
| Lodha Allura | Lower Parel | Full OC received recently |
| Marathon Next Gen Era | Lower Parel | Full OC, society formed |
| Lodha Ciel | Lower Parel | CC, full OC expected Q4 2026 - Q2 2027 |
| Rustomjee Crown Phase 1 | Prabhadevi | Full OC December 2025 |
| Rustomjee Crown Phase 2 | Prabhadevi | Part-OC for some towers, full OC expected Dec 2026 |
| Lodha Grandeur | Prabhadevi | Full OC, society formed |
| Kalpataru Oceana | Prabhadevi | Part-OC for some floors |
| The V Mansion | Prabhadevi | CC, full OC expected 2027 |
Note: certificate states evolve quickly — verify the current state with BMC directly before any agreement-for-sale execution.
The OC-Premium Math — Why Full-OC Stock Costs More
Full-OC stock trades at a structural premium over Part-OC or CC stock in the same project, for three reasons:
- Bank-loan eligibility: Most banks fully fund full-OC stock at 70-80% LTV. Part-OC stock often caps at 60-70% LTV. CC stock requires construction-linked disbursement which slows the closing process.
- Society formation: Full-OC enables society formation, which in turn enables society conveyance — both of which are required for clean resale. Part-OC blocks both until full OC arrives.
- GST avoidance: Sales of fully-completed flats post-OC are GST-exempt. Sales of under-construction flats attract 5% GST on the property value (1% on affordable). On a ₹10 Cr buy, this is ₹50 L of saved GST going to full-OC stock.
Full-OC vs CC GST Math on Rs 10 Cr Buy
CC stock: +₹50 L GST | Full-OC stock: ₹0 GST
Plus 4-9% premium on full-OC over equivalent Part-OC asking — but the GST gap usually exceeds the premium
On a ₹10 Cr LP / Prabhadevi 3 BHK purchase, the GST saving on full-OC stock typically exceeds the 4-9% pricing premium versus Part-OC. Buying full-OC stock is therefore the structurally smarter route in most cases, except where the buyer has a specific tax-arbitrage reason to buy under-construction (carry-forward of unabsorbed deductions, capital-gains LTCG exemption timing, etc.).
Related Reading
→ Real Buyer Cost — Stamp Duty + GST 2026→ GST Under-Construction + Input Credit Decoder→ MahaRERA Project Extension + Completion Slip Decoder→ Title Search + Encumbrance Diligence→ 2026-2030 Forward Supply Pipeline RoadmapFrequently Asked Questions
What's the difference between CC and OC?
CC (Commencement Certificate) is issued before construction starts and permits the builder to begin construction. OC (Occupancy Certificate) is issued after construction is complete and permits occupants to legally move in. A flat with only CC is under-construction; a flat with full OC is legally habitable.
Can I move into a flat with only Part-OC?
Yes — if the Part-OC explicitly covers your floor. Part-OC is issued for specific named floors of a building when those floors are complete but other floors are still under construction. Occupation of unnamed floors is not authorised until full OC arrives. Verify your floor is named on the Part-OC document independently with the BMC G-South ward office.
Will my bank loan disburse fully on a Part-OC flat?
Most banks (HDFC, SBI, ICICI, Kotak, Axis) treat Part-OC stock cautiously. Disbursement caps at 60-70% LTV are common until full OC arrives. Private-bank wealth-channel relationships can sometimes unlock 70-75% LTV on Part-OC stock with strong borrower profile. Always verify with your bank's credit policy before signing agreement-for-sale.
Does GST apply on a full-OC flat resale?
No — sales of fully-completed flats post-OC are GST-exempt. The 5% GST (or 1% for affordable housing) applies only to under-construction sales by the developer to the first buyer. A resale from one individual to another post-OC carries stamp duty + registration but no GST.
How do I verify the OC document is genuine?
Cross-check on the BMC online building approvals portal — search by project name or CTS number. If the online record matches the seller's document (number, date, building name, floor list), it is genuine. For added security, obtain a certified copy directly from the BMC G-South ward (Lower Parel / Worli / Prabhadevi) office for ₹500-1,500. Property Butler's diligence team runs this check for every closing in this corridor.
Buying in Lower Parel or Prabhadevi?
Property Butler runs full certificate verification on every shortlisted property — BMC online + ward-office certified copy + MahaRERA progress audit. Get certainty before the agreement-for-sale.
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