Here is the General list of papers required for NRI salaried persons (Some of them may not be applicable for you) 

NRI Applicant
1)  Latest 3 months salary slips (6 months in case of Merchant Navy cases)
2)  Contract letters/Apptt letters for last 3 yrs (If they are in Non-English language, then English translation, duly attested by employer must accompany)
3)  Latest salary certificate mentioning name, date of joining, passport number, designation and salary details
4)  Copy of  Identity card/labour card.
5)  Income Tax Returns for last 3 yrs, if available in that country.
6)  Photo
7)  Pan card copy
8)  Aadhaar card copy
9)  Passport copy
10) Copy of visa
11) Latest work permit copy
12) Last 3 years CDC (For Merchant Navy cases)
13) Credit Bureau Report, if available in foreign country
14) Address proof of foreign
15) Address proof of permanent address in India
16) Min.6 month bank st(salary a/c) and other accounts of foreign country
17) Min. 6 month bank st of NRE account  in India.
18)  Highest Qualification proof
19)  GPA duly executed on bank performa with  applicable stamp duty.
20)  Copy of all property papers , if selected, along with Sanction Map and Completion Certificate ( If applicable)

(Although under Preapproval Scheme, sanction process can be started without property papers also. 

PAPERS OF GPA
1)   Photos
2)   Pan card
3)   Aadhaar card
4)   Address proof, if Aadhaar is of different address 

Papers required in case of House Wife/Non working Coapplicant:- 
1) Photo
2)  Pan card
3) Aadhaar card copy
4)  Address proof if Aadhaar is of different address)
5) Passport and Visa copy in case of NRI co-applicant     

For any further clarification, pl call

Financial Point
Narinder Singh
Mob:- 999 999 9625, 9811559940