Raising the Roof and Addition

[Zain B.]

Hello BP NJ,

Looking at a property in the Northern New Jersey Suburb (Think Gillette, Warren area). Property is fairly old and part of an estate sale. Seems like the property never had any additions and neighbors have raised their roofs and added an addition in the back. Anyone here have any experience with increasing the square footage of the house. How expensive is it and what are the steps involved. Property is currently 2 bed / 2 bath but there is an easy potential to add a master suite with ~500 sqft of living space. Any advice will be greatly appreciated. 

Thanks