1. How come you have added your wife's name as co-applicant when the flat was already allotted to you based on your application? She could have been inducted as co-owner through a seperate letter and not as co-applicant,
2. However, since the subsequent aggrements with te builder and society have not been registered or notarised, you can withdraw the same, if possible and ask the builder and society to register the title deed in your favour,
3. If your wife has not paid any amount towards the consideration of the flat, then you can certainly claim its sole ownership,
4. If the property has already been registered in both of your names, then you shall have to file a declaratory suit praying for declaration that you are the sole owner of the property with a direction upon the registrar to cancel the earlier registratiion and register it in your name.