Real Estate Description Framework (RealDF)

GR8C Working Draft 15 May 2008

This version:: http://gr8c.org/specs/realdf/080515-realdf-spec/
Latest version:: http://gr8c.org/specs/realdf/080515-realdf-spec/
Previous version:: n/a
Author:: Corey Leong

Abstract

The Real Estate Description Framework (RealDF) is a rich vocabulary for describing real estate resources on the web.

Status of this Document

This document is currently a working draft. Please implement for beta testing purposes as it nears full recommendation by the GR8C.

Parties interested in contributing to this docuument may do so by sending comments to www-realdf-comments@gr8c.org. General discussions related to this specification and related technologies may be sent to www-realdf-interest@gr8c.org.

Changes to this document are added to the change log.

0. Introduction

Introduction

The namespace URI for this vocabulary is http://gr8c.org/realdf/ns; it is denoted by the prefix realdf.

1. Classes

1.1. realdf:Residential

A residential house, flat, apartment, condo, etc.

1.2. realdf:Location

A geographical location in the real world or virtual world.

1.3. realdf:Media

A Media is comprised of an audio, video, image, or document file.

2. Properties

2.1. realdf:beds

Range:	realdf:Residential

The number of bedrooms included.

2.2. realdf:baths

Domain:	realdf:Residential
Range:	rdfs:Literal

The number of bathrooms included.

2.3. realdf:squareFeet

Sub-property of:	rdfs:label
Domain:	realdf:Residential
Range:	rdfs:Literal

Property size in square feet.

2.4. realdf:price

Domain:	realdf:Residential
Range:	rdfs:Literal

Price of property.

2.5. realdf:lotSize

Domain:	realdf:Residential
Range:	rdfs:Literal

Size of the property lot.

2.6. realdf:yearBuilt

Domain:	realdf:Residential
Range:	rdfs:Literal

The year the property was built.

2.7. realdf:garage

Domain:	realdf:garage
Range:	rdfs:Literal

The number of car garages.

2.8. realdf:pool

Domain:	realdf:Residential
Range:	rdfs:Literal

The presence of a pool with property.

2.9. realdf:taxes

Domain:	realdf:Residential
Range:	rdfs:Literal

Monetary amount of annual property taxes.

2.10. realdf:mortgage

Domain:	realdf:Residential
Range:	rdfs:Literal

Monetary amount of monthly mortgage payments.

2.11. realdf:rent

Domain:	realdf:Residential
Range:	rdfs:Literal

Monetary amont of monthly rent payments.

2.12. realdf:world

Domain:	realdf:Location
Range:	rdfs:Literal

Real world or virtual world. ie. Earth, Second Life, There.

2.13. realdf:region

Domain:	realdf:Location
Range:	rdfs:Literal

A global or virtual region.

2.14. realdf:country

Domain:	realdf:Location
Range:	rdfs:Resource

Name of country.

2.15. realdf:state

Domain:	realdf:Location
Range:	rdfs:Resource

Name of state.

2.16. realdf:city

Domain:	realdf:Location
Range:	rdfs:Resource

Name of city.

2.17. realdf:street

Domain:	realdf:Location
Range:	rdfs:Resource

Name of street address.

2.18. realdf:postalCode

Domain:	realdf:Location
Range:	rdfs:Resource

Number of zip or postal code.

2.19. realdf:latitude

Domain:	realdf:Location
Range:	rdfs:Resource

Geographical latitude.

2.20. realdf:longitude

Domain:	realdf:Location
Range:	rdfs:Resource

Geographical longitude.

2.21. realdf:altitude

Domain:	realdf:Location
Range:	rdfs:Resource

Geographical altitude.

2.22. realdf:image

Domain:	realdf:Media
Range:	rdfs:Resource

An image of a property.

2.23. realdf:audio

Domain:	realdf:Media
Range:	rdfs:Resource

An audio file.

2.24. realdf:video

Domain:	realdf:Media
Range:	rdfs:Resource

A video file.

2.25. realdf:document

Domain:	realdf:Media
Range:	rdfs:Resource

A document file such as a pdf, text, word, or writer.