Khari Willis Jersey  Adrian & Diane Ondatje | Mainstreet Realtors

About Us


Phone: 909.994.8567
BRE: #01184865

Hello we are Adrian & Diane with Mainstreet Realtors and we have lived in the North Fontana area for the last 21 years when we first met.
We have raised our children here and really love working together to help our clients find their dream home. Meeting new people and helping them make good buying decisions or selling their home is something we take great pride in. As a matter of fact, if it is not the right time to sell or buy, we have no problems giving that advice to them.
We also work with investors and help them grow their retirement. We have a great contractor that wants to build new affordable homes in well-established areas.
We are here to answer any questions you might have to take the worry and stress out of the real estate process.
We have the most amazing team in place to help you with the sale or purchase of your home. Photographers, handymen, roofers, marketing team, lenders, inspectors, escrow, title experts and transaction coordinators. So please give us a call to help you with your dream of owning or selling your home.

The Testimonials

Trevor and Danelle Sturgill (Buyer)

We were so lucky to have Adrian and Diane as our realtors. They were the reason why we got our home. Both were on top of everything and we got the home of our dreams because of their knowledge of the industry and them being able to get our offer accepted quickly before others could out bid us. They genuinely care about their clients and do whatever it takes to make you happy. Adrian and Diane love what they do and take the time to make sure you are getting exactly what you want in your next home. It was a great experience and we recommend them to anyone and have already referred a few other friends. You will be glad you went with them as your agents they are the best around.

Angie Miranda (Buyer)

Adrian and Diane were amazing during my first home purchase. I met them at an open house and it was my lucky day because they were beyond responsive and within 24 hours we were out looking at homes within my price range and within the parameters I needed. Not only were they really responsive (which is clutch in time sensitive situations like real estate) but they are SO knowledgeable about real estate and home improvement too! They definitely made the process for me, a first time home buyer, easy. I would definitely recommend them to anyone looking for a home!

Dennis and Tina Walker ( Sellers & Buyers)

WE recently used Adrian and Diane to help us to sell our home in Fontana and also to purchase a new home in Jurupa Valley. this is the third time we have used their services over about 20 years. they are very professional and are always available to answer questions or step in deal with any unanticipated issues that come up during the buying and selling process. My wife and I would highly recommend their services to anyone looking to buy, sell or both.

Chris and Melinda Miller (sellers & Buyers)

Adrian and Diane helped us find our first home 7 years ago. They were patient, easy to work with and always ready to answer our questions. So when we decided to move into a new build, we called them up. They got our first house sold in no time for a great price and walked is through everything to get into our new home. They're supportive, encouraging and really knowledgeable. I always feel comfortable trusting their advice, and they've never steered up wrong. Highly recommend Adrian and Diane.

Curt & Gail Elwood (Buyers)

I had a very positive experience with Adrian and Diane. They kept in touch with us on a daily basis emailing us homes to look at, set up appointments to look at each one, met us there in a timely fashion and very sincere people. I have dealt with others realtors in the past and Adrian and Diane surpass anyone we ever dealt with prior. I would recommend them 100% . They are a team and will deliver what you want. They work very hard and are very sincere people. They love what they do and it shows. You won't be disappointed!!!