Diseño de portal inmobiliario

Hello!
New business start-up searching for:
-Developer/web designer for property portal start up
- Spanish is a BIG plus!
Will have to build from zero a portal where visitors can see a list of properties for rent, sale, holiday rentals (based on ranking).
It should include a filter for price, location, price, rooms… Site will need to be in English and Spanish!
Every property should include a location map, photos, property details and contact form. If possible a calendar.
We also need every Estate agent and us to have access to their profile and be able to modify their information.
Similar websites:
http://www.zonaprop.com.ar/
http://www.rightmove.co.uk/
http://www.zoopla.co.uk/
http://www.propiedadesenuruguay.com/


Please show us your portfolio and how would you build this one (which platform, time frame, etc).

We are a start up business and will consider lowest rates but we promise more future work or long-term collaboration if you do a good job