Bedroom to bathroom/closet a good investment?

[Curtis J De Leon]

We (my wife and I) own a 3 bed 1 bath rental with a livingroom and a den. Its about 1500 sqft and we are thinking of converting the smallest bedroom into a bathroom and making the den into the master bedroom. The home is on a crawlspace and the other bathroom shares a wall so plumbing wouldn't be too difficult but we are wondering what type of return we would be looking at for the property value. We understand that it is a rental and we are not in this for appreciation but this house is a rent to own for us and we will need to get a conventional mortgage next year so the added value would definitely help. Any insight would be appreciated.