1. Without mentioning a part of a property in the sale deed , it would not be considered to have been transferred.

2. The deed of modification will not rectify this defect either.

3. You will have to get a fresh deed executed and registered with respect of the parking space.

Hello, 

1)  As the first sale agreement has description about the stilt parking,  you can add those details in a rectification deed that must be registered. 

2)  Besides agreement of both the parties,  you must get the approval from the registrar for rectification as there would be a change in the area with the addition of the car parking. You will also have to pay the applicable stamp duty. 

There is no sale of car parking slot to you 

parking slot has been allotted to you 

on sale of flat have to apply to society to allot car parking slot

bo need to execute rectification deed 

Yes a rectification deed can be made or alternatively separate.deed if the car parking is garage like structure.

Future if it is allowed car parking the seller can get NOC from CGHS and transfer allotment in your favour.

Parking spaces are common spaces which belong to the housing society. Allotment of the same is at their discretion and the same can be done by means of First Come, First Serve or however the managing committee deems fit.

Allotment of Parking space is a “Administrative function” and the Managing Committee as well as General Body are empowered to allot the parking space to its own registered members

Yes through rectification deed or separate agreement specigying the context of agreement to sale

Not rectification deed but fresh addendum deed to sale deed.

legally if the car parking space in in stilt of the building then it comes under common areas of society and cannot be sold

that may be the reason why in conveyance deed in favour of B, the car parking is not mentioned

if the society is giving its NOC for allotment of car park space to you, then you can sign and register a rectification deed with your seller by paying additional stamp duty on the car park

1. Open /Stilt /Podium Parking spaces are all classified as "common open spaces" under the Regional Town Planning Act and CANNOT be Sold or Purchased or Registered . Parking spaces can be allotted (most of the times by illegally collecting money, which is a criminal offence).

2.  Further immovable property deals based on SPA /GPA is legally invalid according to a Supreme Court judgement.

You can ask your vendor to execute a registered rectification deed to add the stilt car parking space in the registered sale deed which was available ion the original sale deed in the name of A.

This would ensure you the rights for car parking space.

1. There has already no mention about the car parking details when the property sold to Mr. B, and so none has been mentioned in your documents also.
2. If the same (car parking area) was the part of the area mention in the documents executed by A in B’s favour then it may not be required to get the consent of A also when going for the rectification deed.
3. But, if the area is separate in the details mentioned therein then you may have to take the consent from both, Mr. A and Mr. B.