Volunteer to build homes in Costa Rica

I graduated from Michigan State University with a degree in Social Work. I have always had a passion for helping people and after finishing school I want to follow my heart and do more for people. I want to travel to Costa Rica and build homes for underprivileged families for 8 weeks. However, after putting myself through school I have debt and not a lot of money to follow this dream. This is an experience I want to give to others but because of my financial situation I cannot do it on my own. Any help would be for these families in Costa Rica who don't have a roof over their heads. The amount that I am seeking donation for comes from the trip costs and the flight that is seperate. chttp://www.i-to-i.com/volunteer-projects/build-homes-in-costa-rica