Tax related queries

Dear Sir, Hope you are doing well... Wondering if i may have your valuable opinion on following points :- 1) If an organization mistakenly considered Income from "Home - let out property" and deducted around Rs. 50K extra [as in Form 16]; while, No property exist so far... Would ITR-1 be enough to claim for refund or whats else we should furnish to IT while filing IT returns? What are the documents / proofs one should carry to comply the Income tax department investigation ? 2) We [Me & spouse -> Co-owner & Co-Applicant] Bought a First home in FY 2016-17 of value < 50L and Loan is < 35L. I have Declared and claimed for 100% home Loan Interest under section 24 [Which is less than 2L]. should WE both file ITR-1 OR ITR-2 [with Property details declaration] ? Would it be possible if my spouse could claim additonal 50K under section 80EE ? Or can be it be claimed next FY too ? is it to be claimed 100% only by me or my spouse can do too ? or in Proportionate ratio / parts also in consecutive Financial years ? claimed amount should not exceed from 50K under section 80EE until the Loan is fully repaid...right ? This is something one time benefit ? 2) Can one claim HRA from IT department; if living in a home that registered in guardians name. ? Thanks a lot in advance.. Have a nice day...