Where do I get information on how to add a piece of property to a list
of locations available for shooting commercials/films/photography etc?

This piece of property includes a large home and surrounding gardens
and is located in Anaheim Hills, CA. I'd like it to be available for
rent to professional location scouts.

Do you need more information than this? Let me know!

Hello.

I have located a number of agencies that list properties for purposes
of location shooting in the Los Angeles area.  You'll need to contact
each agency individually to get listed with them.

Plan It Locations of Van Nuys.
http://www.planitlocations.com/
"Plan-It Locations has many successful locations in the greater Los
Angeles area, we enjoy working with property owner's like yourself. We
look forward to introducing your property to film producers,
photographers, video-graphers, event organizers, and television
production companies that may be interested in the rental of your
property.
source: Plan It Locations: Marketing
http://www.planitlocations.com/marketing.html
Plan It Locations: Property Registration
http://www.planitlocations.com/register.html

Legend Locations
"Celebrating 20 years as LA's premier Location Service. Make Your Home
a Star"
http://www.legendlocations.com/cgi/iServ.cgi

The Location Connection (based in Manhattan Beach)
http://www.locationconnection.com/f
" I would like my home represented by The Location Connection, Inc.,
for filming and/or special events. What do I need to do to get
started?
The best thing to do is to e-mail or send by regular post office mail,
pictures of your house.
http://www.locationconnection.com/faq.html#FAQ6
Contact Information:
http://www.locationconnection.com/aboutus.html

Stock Locations (based in L.A.)
http://www.stocklocations.com/
"Stock Locations: Getting Listed With Us"
http://www.stocklocations.com/gettinglisted.htm

Cast Locations
http://www.castlocations.com/
Cast Locations: 
Listing Your Property
http://www.castlocations.com/homeowners.html

Amazing Locations (based in Chatsworth)
http://www.amazinglocations.com/
Amazing Locations: List Your Property
http://www.amazinglocations.com/listproperty.html

Joe Darrell Location Service
http://www.jdls.com/jdls-form-clientinfo.html

Ferguson's Location Library
http://www.locations2film.com/

Pacific Locations
http://www.pacificlocations.com/paclocs.html

LA Scout Planet
http://www.lascoutplanet.com/

Real to Reel Locations: Get Listed
http://66.226.5.253/GetListed.asp

Hollywood Locations:
http://www.hollywoodlocations.com/filming.htm

search strategy:
"location scouts", locations, movie
hollywood, "l.a.", "los angeles"

I hope this helps.

Thank you for your quick response!