Legal Due Diligence for Under-Construction Property: Complete Verification Guide
Buying under-construction property carries unique legal risks. Learn what approvals to verify, how to check builder credentials, and protect your investment.
KASDEALS Editorial
December 30, 2025·6 min read
Introduction
Under-construction properties offer lower prices and payment flexibility but carry higher risks—project delays, builder defaults, and approval issues. Thorough legal due diligence before booking can save you from years of trouble.
Pre-Construction Approvals to Verify
1. Land Title and Ownership
Verify:
- Builder owns the land (or has development rights)
- Clear title for at least 30 years
- No encumbrances or litigation
- No government acquisition notices
Documents to check:
- Original title deed
- Development agreement (if builder doesn't own)
- Encumbrance certificate
- Revenue records
2. Land Use and Zoning
Verify:
- Land zoned for residential use
- Conversion from agricultural (if applicable)
- Master plan conformity
- No reserved/notified land
Documents to check:
- NA (Non-Agricultural) order
- Town planning scheme
- Master plan extract
- Zoning certificate
3. Environmental Clearances
Required for:
- Projects above 20,000 sq meters
- Near eco-sensitive zones
- Coastal areas
- Near water bodies
Documents to check:
- Environment clearance from SEIAA/MoEF
- CRZ clearance if coastal
- Forest clearance if near forest
- Pollution board NOC
Construction Approvals
4. Building Plan Approval
Verify:
- Approved by competent authority (municipal corporation/development authority)
- Approval is current (not expired)
- Project matches approved plan
- FSI/FAR compliance
Check for:
- Number of floors approved
- Setback compliance
- Common area provisions
- Parking as per norms
5. Commencement Certificate
What it is: Permission to start construction
Verify:
- Certificate is valid
- Project started after certificate
- Matches building plan
- All conditions being followed
6. Height Clearances
Required from:
- Airport authority (near airports)
- Defense (near cantonments)
- Telecom (certain areas)
- Fire department (for high-rises)
7. Fire NOC
Verify:
- Fire department approval
- Fire safety provisions in plan
- Regular compliance checks
Important for: All high-rise buildings (above 15 meters)
RERA Verification
8. RERA Registration
Must check:
- Project is registered
- Registration number is valid
- Match with RERA portal details
On RERA portal, verify:
- Project name and address
- Promoter/developer details
- Total units and sold units
- Completion deadline
- Financial details
- Approvals uploaded
- Quarterly progress reports
9. Compliance Status
Check on RERA portal:
- Any complaints against project
- Builder's other projects
- Delay history
- Penalty records
Financial Due Diligence
10. Land Not Mortgaged
Why it matters: If builder defaults on land loan, your property is at risk.
How to verify:
- Encumbrance certificate
- CERSAI check for registered charges
- Ask builder for NOC from lenders
11. Escrow Account
RERA requirement: 70% of collections in escrow
Verify:
- Escrow account exists
- Proper utilization
- Withdrawals only for project costs
12. Builder's Financial Health
Check:
- Past project completion record
- Any insolvency proceedings
- Loan default history
- Pending payments to vendors
Builder Verification
13. Company/Firm Status
For companies:
- MCA registration (CIN)
- Active status (not struck off)
- Authorized signatories
- Any pending cases
For LLPs/partnerships:
- Registration certificate
- Partner details
- Authority to execute agreements
14. Past Track Record
Research:
- Previous projects delivered
- Delay history
- Quality issues
- Buyer complaints
- RERA complaints in other projects
15. Litigation Check
Check for:
- Cases in consumer courts
- RERA complaints
- Civil suits
- Criminal cases
- Insolvency proceedings
Agreement Due Diligence
16. Builder-Buyer Agreement
Key clauses to verify:
| Clause | What to Check |
|---|---|
| Possession date | Clear and definite |
| Delay penalty | Same as buyer's default interest |
| Specifications | Detailed and measurable |
| Carpet area | Clearly defined |
| Common areas | What's included |
| Maintenance | Terms and costs |
| Parking | Allotment terms |
| Cancellation | Reasonable terms |
17. Payment Schedule
Should be:
- Linked to construction milestones
- Not front-loaded
- RERA compliant
- Grace period for payments
Red Flags to Watch
Document Red Flags
| Red Flag | Risk |
|---|---|
| Missing approvals | Project may be illegal |
| Expired approvals | Work should have stopped |
| Mismatched plans | Actual vs approved differ |
| Land disputes | Project may stall |
| No RERA registration | Illegal sale |
Builder Red Flags
| Red Flag | Risk |
|---|---|
| Multiple stalled projects | Financial trouble |
| Frequent company changes | Trying to escape liability |
| Aggressive sales pressure | Hiding problems |
| Refusal to share documents | Something to hide |
| Below-market pricing | Quality compromise or fraud |
Project Red Flags
| Red Flag | Risk |
|---|---|
| Slow construction progress | Financial issues |
| High inventory unsold | Demand problems |
| Labor disputes visible | Management issues |
| Quality complaints | Poor execution |
| Key personnel leaving | Internal problems |
Due Diligence Checklist
Before Site Visit
- Check RERA registration
- Research builder online
- Check builder's other projects
- Search for complaints/news
At Site Visit
- Ask for all approvals
- Verify construction quality
- Talk to existing buyers
- Check construction progress
- Verify amenities being built
Before Booking
- Get lawyer to review documents
- Verify land title
- Check all approvals
- Review agreement thoroughly
- Verify RERA details match
- Check bank approvals (loan sanction)
Before Registration
- Verify OC/CC obtained
- Check completed amenities
- Final site inspection
- All documents received
- Society formation plan clear
Professional Help
When to Hire Lawyer
- First under-construction purchase
- Project above ₹50 lakh
- Any red flags discovered
- Complex ownership structure
- Unusual agreement terms
What Lawyer Does
- Title verification
- Approval verification
- Agreement review
- RERA compliance check
- Risk assessment report
Cost
- Basic verification: ₹10,000-25,000
- Comprehensive due diligence: ₹25,000-75,000
Conclusion
Under-construction property purchase requires more due diligence than ready property because you're essentially trusting the builder to complete what they promised. The time and money spent on verification is insurance against major losses. Never skip this step—too many buyers have lost their life savings to unverified builders.
Written by
KASDEALS Editorial
Expert contributor at KASDEALS, providing insights and analysis on India's real estate market.
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