Intero Real Estate Union City

Before Silicon Valley was duly named, its history as the hotbed of innovation was well noted. Our catchy moniker reflects the giants of technology who line the corridors of Cupertino, Mountain View, Menlo Park, Palo Alto, and Sunnyvale; the wave of progressive firms that have shaped electronics, e-commerce and social interaction all call this place home.

In its truest form, innovation knows no boundaries. It isn’t contained by market or economic trends. Silicon Valley is where everyone gathers at the water cooler of progress, questioning why things can’t be better.

It’s from that fountain that the founders of Intero drank.

It was 2002. Silicon Valley was mired in the dot-com bust affecting all corners of the technology sector. As a result the local real estate market grinded to a halt. In true Silicon Valley spirit, that was the exact, perfect moment to launch a startup real estate brokerage.

Intero’s desire wasn’t to be like all other brokerages. Not only were we committed to providing our residents and neighbors a service that heralded the very nature of where we live, we owed it to our new neighbors, recruited from all over the world to come and work for many of the most creative, progressive companies on the planet.

Powered by an entirely new technology platform, backed by a solid investment, led by a team of real estate veterans who were all born, raised, and weaned right here in the Silicon Valley, Intero Real Estate Services was born.

While the dot-com bust remedied, in 2007, the real estate bubble burst and its subsequent effects on the market and economy were well documented. For us, this signaled a moment in time to do what we do best - invest in our company and innovate further.

Over the past seven years, against the pressures of a challenging market, we continued to advance our training programs, update all of our technology, grow our brand into other markets, and build a luxury sub brand.

We did all this because this is who we are.

In 2014,


Recommendations (611)

3 days ago

Chris Traina recommends Cara Milgate


So I met with my new broker, Cara L. Milgate yesterday morning and it was everything I ever wanted with a broker. I told her all of my crazy ideas. Big ideas.

She mapped them out for me and discovered the best way to use technology and resources to elevate me to my next level in each. Also, we both share similar mindsets in what motivates us which is always encouraging.

I’ve never raved about a broker I’ve hung my license under, I’m raving.
3 days ago

Cara Milgate recommends Chicklet Medina

Vice President

Chicklet Medina is an excellent Realtor, she uses technology to give her clients an extra advantage when locating the perfect home or selling their home for the highest value. She takes care of her clients and put their needs as a priority. I highly recommend her as your realtor.
3 days ago

Ashveen Naicker & Ravineshni recommend Mukesh Kumar

Product Specialists

We Received A Very Great Services From Realtor Mukesh Kumar , His A Very Friendly Person , Firstly He Find Out Our Needs Assessment Like A Property We Are Interested , He Has A Ocean Full Knowledge On His Field , His Speed Up Process Was Beyond Our Expectation , We Still Did Not Believe That We Are Finally A Home Owner , The Buying And All The Paperwork Was So Smooth , Thanks To Intero Real Estate Service For Keeping A Very Reliable And Honest Person In Your Company

Thanks Again Mukesh
Jan 21, 2020

Richard Gonzales recommends Pia De Castro

Private client banker

Pia did an amazing job helping close in a second rental property in Concord Ca. She also assisted me with setting up paperwork’s with the current renters in order for us to keep them.

A+++++ highly recommended!!! Don’t look further, Pia is your realtor!

Thank you Pia for all your help and for a smooth close.
Jan 21, 2020

Kim D recommends Joraine Costales

Joraine is an amazing advocate for her clients!
Jan 20, 2020

Rebecca Gonzalez recommends Antonette Llanza


Thank you to Antonette, very patient with us. When we first started started working with her last year we had paused our search for awhile while we tried to figure out what we really wanted to do. She understood and gave us our space. Once we were ready again we decided to contact her because we liked her patience and knowledge of the market. Always in contact via email, looking out for listings. Gets it right away as to what we were looking for. Great at communicating with us during the process of home buying. Thanks to Antonette we found our home.
Jan 20, 2020

Ryan Rapada & Emelyn Viray recommend Antonette Llanza

Bus Driver & Teller

We couldn’t be more happy with our new home! After renting for the last 5 years, it’s a breath of fresh air knowing our hard earned money is going towards something we can call our own. Antonette definitely helped us with this process as quick and efficient as possible. We closed within a little over a month, which includes the house hunting process and close of escrow. Our two kids love our new home, and we can’t wait to begin our new memories here! Thank you Antonette!
Jan 20, 2020

Monette Santillan recommends Marcel Calderon

I met Marcel during an open house. I knew instantly that he had the passion for the job he is into. Although I have long time relationship with other agents, I contacted him when I decided to buy a house.

He was very attentive to my needs (as if I am his only customer) , knowledgeable in the contract negotiations that we were able to close in 20 days. He still returns my messages promptly up to this day even when all I need is help on internet connections, moving arrangements, security connections...all the little things I'm not fond of googling.

I highly recommend Marcel for all your real estate needs.
Jan 14, 2020

Jenna G recommends Joraine Costales

Joraine and Marc made our home ownership dreams come true! They were so attentive and helpful during the process. I really appreciated that they were really on top of everything, ensuring to keep us in the loop and providing quick responses to our questions. Thank you!!
Jan 14, 2020

Paul Calub recommends Joraine Costales

Home Seller

My family and I would like to give a big thank you to Joraine, Marc, and the rest of the Costales team! From beginning to end, you were right there answering any questions. I never write reviews but this is a special case. We’re very shocked in the happiest way possible, that you have made selling our house stress free! Our timeline was on point!

Anybody looking for a realtor, contact Joraine Costales. The Costales team are simply the best! Thank you, I now have a realtor for life!
Jan 14, 2020

Anonymous recommends Margaret Lin

Margaret recently helped me sell my home. That may sound simple to some, but all of those who have gone through the all the troubles that can come up while selling a house can tell you, it’s not always simple. Margaret was supportive and extremely helpful throughout the entire process. She cares about her clients like they are family and is dedicated to doing everything she can to support them. Her passion is evident in all of her work. Margaret will be my go-to real estate agent for any future sales/purchases.
Jan 9, 2020

Anthony Michael Henares recommends Pia De Castro

Home Owner

I would like to recommend Pia De Castro for selling our house of 43 years so quickly. We had a successful open house and never thought we would sell for as much as we did. We send all our thanks and appreciation to Pia and her team member Megan for all their help and patience.

Thank you so much, Anthony and Diana
Jan 7, 2020

Jill R recommends Joraine Costales

I want to thank you for all your work and patience with us. If any of my friends decide to move I will recommend you and let them know how friendly and hard working you are. Glad we are finally done with that faze of our life.

Thank you again.
Jan 7, 2020

Shyla M recommends Joraine Costales

Joraine and her family are amazing! When looking for a realtor you definitely want someone that makes the process easy and understandable. When I bought my first place I went with a realtor who didn't put in the work to help me or explain the process to me. Complete opposite with my experience with Joraine. Her and Marc are always dedicated to their work and it shows with their results. My husband and me sold our first condo (for top dollar) and purchased our "forever home" (even with the contingency of the sell of our condo) and it's all thanks for the Costales team!!! We never felt confused or questioned the steps they were making. We are so thankful for them and the work they put in. They definitely treat you like their focus is on YOU, even though their lives are busy and they have other clients. When choosing a realtor why not choose one of the best??? And if you want top dollar when you sell and best outcome when purchasing there's no question... go with the Costales team!
Dec 31, 2019

Cecilia Antinero recommends Luzbelinda "luchie" Grissom

Medical records director

Luchie is a great realtor. We are just blessed that she was introduced to us by my bff. She has helped us tremendously and she became patient and understood our situation. She didn’t push us to buy just to get a commission but she did help us to be able to get our first home and became a homeowner. My family is just grateful and thankful for in a matter of 3 months, we were able to acquire a condo. I will continue recommending more clients to her. Thanks and Hod bless Ate Luchie.
Dec 28, 2019

Angel R Guzman recommends Marcel Calderon

Kind person

Mr. Marcel helped us my wife and I from the begging, we are first time buyers and didn’t know much about the real estate business, but Marcel guide us and recommended different options on how to go about getting an offer in and accepted through the interred process he made sure we felt comfortable Marcel is a very caring and knowledgeable person on what he does he was attentive to our needs and kept us informed during the process, I will definitely recomen Marcel to friends and family and will keep him as my future realtor when we decide to sell. Keep up the good job...great job!!!
Dec 20, 2019

Sunny recommends Pia De Castro


She dedicated and professional in all aspect in assisting our sale.

She was our agent 10 years ago for buying this home and we are a return client after 10 years for her to sell same house.

Wish her the best and continue success.

Dec 20, 2019

Kevin M recommends Pia De Castro

Pia is the best real estate agent we have ever worked with. She works hard for your money. She is very pro-active and resourceful. She helped sell our home within a short period of time! We highly recommend Pia!

Dec 18, 2019

Ron Rivers recommends Margaret Lin


Margaret was a pleasure to work with. She was extremely professional and knowledgeable. I would highly recommend her to any future clients.
Ron Rivers
Remax Accord
Dec 9, 2019

Sumana Mannem recommends Pratik Daftary

Sr Product Marketing Manager

Pratik is a professional and highly knowledgeable realtor. His helpful nature, patience and overall real estate acumen helped me while I was hunting for my first home when I was totally clueless about the housing market.
Nov 28, 2019

Mark Davidson Platon recommends Pia De Castro

It was a pleasure working with Pia De Castro and her team. She truly is working hard to meet her client’s best interest. We started our house-hunting journey with her in July 2019. As a first time homebuyer, we were excited and apprehensive at the same time. She provided us her personal and professional insights about the current market, what to expect and even laid out strategic plans on making offers.

We appreciate her for making herself available at all times— from multiple calls everday to weekend open houses to late evening house showing. She kept our spirits high during the times when our offers were not accepted and continued working hard to find the perfect home for us. After 2 months of hard-work, we finally got in to contract. There has been a lot of hiccups before our offer got accepted, but Pia made sure that she got everything covered. She put so much effort into the negotiation process and was able to get the best deal for us. It would’ve been more stressful had it not been to her help and guidance. Her job as a realtor did not end after she gave us the key. She was really helpful even after we moved in.

We are very glad to have Pia as our realtor and we are grateful for all the help she gave us during the entire process.
Nov 25, 2019

Bill Keller recommends Pia De Castro

Real Estate Agent Legacy RE

My transaction with Pia wont very smoothly. She always returned calls promptly
and kept me updated though out the escrow.
Nov 25, 2019

Patricia Garay recommends Pia De Castro

New Home Owner

Thanks to Pia and the team of professionals she put together for me, I am now have a new title of "Home Owner" I am a first time home buyer and Pia educated me thru the process, from the very beginning of pre qualification thru the inspections, and signing of final documents. She was always ready to answer my questions, educate me thru the entire process, and respected my choices, budget and made me confident that I had someone on my side. Thank you Pia! Thanks to your experience and your amazing team, I now have a nice home to call my own! It has been a pleasure working with you and I'm so happy with my new home!
Nov 15, 2019

Eric & Grace Bustamante recommend Pia De Castro

Happy Clients

Pia is truly the BEST!!!She really exceeded our expectations,we always felt so comfortable.Thank you for helping us make our dream becoming homeowners...❤️❤️❤️
Nov 14, 2019

Margaret Lin recommends Cara Milgate


There are many things which I am thankful in my life and all of you are at the TOP OF THE LIST. All of you always give me supports. Thanks so much to Cara L. Milgate, Greg Nasol, Rishi Bakshi, Arash Safai, Sonika L Raniga, Raquel Tayo, Rachael Abusaidi, Cathy Lee. Thanks so much for All my LOYAL CLIENTS, I am sure you know who you are.

Our Team