Costa Rican Chamber of Real Estate Brokers

http://www.camara.cr

National Association of Realtors
http://www.realtor.org

National Registry

http://www.rnp.go.cr

General Direction  of Immigration in Costa Rica

http://www.migracion.go.cr

National Institute of Insurance
http://portal.ins-cr.com/ 

Central Bank of Costa Rica
http://www.bccr.fi.cr

La Nacion Newspaper
http://www.nacion.com

Costa Rican Investment Promotion Agency
http://www.cinde.org

Costa Rican Institute of Electricity
http://www.grupoice.com

COSTA RICA SOL FIRST REALTY has what you are looking for!