It would depend on the specific property. For instance, in Eastvale, a similar home on the west side of Archibald may be $1500+ more in taxes than a home on the east side of Archibald. If you are able to look up the property on Trulia, Zillow, etc. then the tax information should provide a good approximation. For a more accurate answer, your Realtor is your best bet since they have access to that information through the MLS. Either way, Rancho Cucamonga or Eastvale are great areas to live. Best of luck to you!
Your property taxes will be approx. 1.5% of the homes purchase price, plus any special assessments to go along with certain communities. You must also know that you may have up to two supplimental tax bills as well. The supplimental tax bills are separate from your normal property taxes and any special assessments. The supplimental bills will not be included in any escrow accounts that are set-up through your purchase loan. You can count on any supplemental tax bills to arrive approx. 6 months after you close escrow on your home. All Seller's must disclose all special assessments for the property. That being said, I recommend that for any home you consider purchasing that you contact the County Tax Assessor and provide the properties address or APN number and purchase price. Ask them to let you know what your property taxes will be should you purchase the home? Ask them if their will be any supplimental tax bills, and if so how much will they be? This information can be gathered over the phone and will allow you to determine during your due dilligence period if the home falls within your budget. Do not pass this process off to your Agent. This call must be made by yourself so that you get the information first hand.
I hope this helps to answer your question. Should you have any other questions or feel the need to hire a Professional Realtor, please feel free to contact me at (626) 221-8252 or by email at firstname.lastname@example.org.