1) When was the mezzanine floor constructed .? 

2) is it regularised by BMC 

3) modified DCR 38(6)(i) permitted exemption of mezzanine floors constructed prior to 15 August 1997 from FSI computation subject to special permission of the Municipal Commissioner and upon payment of premium as specified by him. To bring into effect the provision of DCR 38(6)(i) authorising the Municipal Commissioner to grant such permission and for determination of amount of payment of premium, the Municipal Corporation formulated Policy vide Circular dated 8 August 2005 for regularization of mezzanine flats and lofts constructed prior to 15 August 1997 in existing authorized buildings.

4) you should be entitled to additional area in new building on redevlopment 

Aclaim for a mezzanine floor would likely involve demonstrating its existence and value as part of the original property, and potentially seeking compensation for its loss or alteration during the redevelopment.

If the mezzanine was part of the original agreement, this is crucial evidence.

Determine whether the mezzanine is being removed, altered, or its functionality is affected by the redevelopment. 

Determine whether the mezzanine is being removed, altered, or its functionality is affected by the redevelopment.

Attempt to negotiate with the developer or relevant authorities for compensation for the loss or alteration of the mezzanine floor.

A mezzanine floor is typically not counted as one of the floors in the building, and hence, it is excluded when counting the maximum floor area.

You are legal owner of part of structure. You are entitled to equal share of your space at with other owners, what other get you will also get proportionately. 

No. You are not entitled to any extra area. In terms of rent agreement you will be entitled to any tenanted area as was originally assigned to you. 

If it's a legal structure then yes 

You'll need some document issued by BMC to show that the mezzanine is a legal structure 

Mere reflecting of the mezzanine floor in the assessment records will not suffice though 

It depends what is your existing area and FSI applicable in your area

Your entitlement to a mezzanine floor or extra carpet area in the redeveloped building depends on the following factors:

Key Considerations:

1. 
   Development Agreement with the Landlord – If the existing legal mezzanine floor was part of your leased/rented area, you can negotiate for an equivalent space in the redeveloped property.
2. 
   Municipal Approvals & Redevelopment Rules – Some cities allow extra FSI/FAR in redevelopment, which might impact your claim for a mezzanine floor.
3. 
   Customary Practices & Previous Agreements – If past tenants received additional area for their mezzanine, you can demand the same.
   

Possible Claims in Redevelopment:

✔ Same Carpet Area + Equivalent Mezzanine (if legal).
✔ Extra FSI if permitted by local authorities.
✔ Compensation or rent during redevelopment if relocation required.

What You Should Do:

• 
  Check the redevelopment agreement & your lease terms.
• 
  Negotiate with the landlord before signing any agreement.
• 
  Consult a lawyer to ensure your rights are protected.

For detailed, personalized advice, consider a phone consultancy. Hope you find the information helpful. You are free to contact me for further discussion. If you could spare two minutes of your time to write a review, it would be greatly appreciated and bring immense happiness to read it. Thank you. Shubham Goyal.