Osa Osa Properties
- Listings of land and lots, with background information on the area and on real estate laws.
- http://www.osaosaproperties.com

Pura Osa
- Information on typical construction, transactions in the country, and local ecology.
- http://www.puraosa.com/

Osa Land Office
- Offers opportunities for land purchase, with information about buying and owning, investment and development.
- http://www.osapeninsula.com/

Discovery Hills
- Specializing in properties on the Osa Peninsula, with listings and area info.
- http://www.discoveryhillscr.com/