1) As the flat is registered in name of two joint owners, please let me know what precautions I should take while doing payment, executing sale agreement and sale deed for same.
The title holders should execute a registered sale agreement in favor of the purchaser.
2) Can you please help me with the checklist of documents that I should inspect before considering to enter into a sale agreement and going for registration? Please only let me know documents that are absolute necessary for sale deed in Dombivali. (there is a very long list on internet)
Any list of documents given here shall not be a complete list giving proper opinion to the purchase, instead you may approach a local lawyer who will scrutinise all the relevant documents and would ask you to produce any other relevant document to confirm a genuine sale and genuineness of the property to be sold.
i.e., besides the original link documents depicting the title and transfer of the same to different hands, the Joint development agreement if any, power of attorney documents, if any, approval by competent authorities like town and country planing department , municipality permission or any other permission by a different authority etc need to be scrutinised.