Interconnection between flats generally involves combining adjacent residential units through:

• Internal staircases
• Connecting doorways
• Duplex-style layouts
• Structural openings between units

These modifications are increasingly common in

• premium residential developments where buyers seek larger living spaces or
• multi-generational housing arrangements.
• Family-owned adjoining flats
• Penthouse combinations

Why Parking Compliance Is Important

When two flats are merged:

• The built-up area effectively becomes a larger dwelling unit
• Parking demand may increase
• Occupancy pattern changes

Hence authorities insist that:

• Approved parking slots cannot be removed
• Driveways cannot be blocked
• Turning radius and circulation space must remain compliant

In many projects, buyers illegally:

• Convert stilt parking into rooms
• Block fire driveways
• Extend private areas into common spaces

These rules aim to prevent that require revised approval if the modifications alter sanctioned planning parameters.

Permitted in HRB & NHRB

NHRB (Non-High Rise Buildings)

Generally buildings below 18.3 m height.

HRB (High Rise Buildings)

Buildings above 18.3 m height requiring:

• Fire NOC
• Enhanced safety norms
• Additional setbacks
• Refuge area compliance

CMDA permits interconnection in both categories, but only when:

• Parking norms remain intact
• Fire escape access is unaffected
• Structural stability is maintained
• Common area encroachment does not occur

Restriction in Affordable Housing Projects

Interconnection between dwelling units is not permitted in affordable housing projects.

This restriction exists because:

• Such projects are approved based on fixed unit configurations
• Infrastructure calculations are linked to approved dwelling sizes
• Unit consolidation may violate affordability objectives and planning incentives

Why These Regulations Matter

These compliance norms help:

• Prevent unauthorized building alterations
• Preserve infrastructure efficiency
• Maintain emergency access and fire safety
• Protect approved parking layouts
• Ensure planned urban density standards

Non-compliance may result in:

• Enforcement notices
• Approval complications
• Occupancy-related issues
• Penalties under planning regulations

Relevant Verified.RealEstate Services

Builders, architects, and property owners can also utilize:

• Architectural Planning & Design Services
• Building Plan Preparation
• CMDA Approval Assistance
• Building Approval Verification
• Planning Compliance Review
• Property Legal Due Diligence
• Approved Plan Verification

Verified.RealEstate offers these services to assist builders to ensure flat interconnections comply with approved development and safety norms. and verify whether apartment modifications comply with approved development norms.