Guillermo Altamirano is the co-owner and co-founder of the Oscar Tortola Group, a premier real estate brokerage serving Southern California. With over 20 years of experience in the real estate industry since 2005, Guillermo is a seasoned strategist, expert negotiator, and trusted market authority known for delivering exceptional results. Guillermo began his career in real estate as an escrow officer, providing him with a unique, inside-out understanding of complex transactions. During the last major market downturn, he became a specialist in short sales and foreclosures, successfully guiding countless homeowners through challenging financial situations with expertise, professionalism, and care. That foundation has shaped the high level of skill and confidence he brings to today's competitive market. Ranked in the top 1% of real estate agents in both California and nationwide, Guillermo has successfully represented hundreds of buyers and sellers across luxury, residential, and investment properties. His business is built on sophisticated marketing strategies, strong negotiation, and a commitment to maximizing value for every client. Guillermo is also widely recognized within the industry as a thought leader and expert. He has been featured on the cover of leading real estate magazines and regularly invited to speak and participate on panels, sharing his insights with top professionals. With hundreds of five star reviews across major platforms, Guillermo is trusted for his transparency, integrity, and results driven approach. His philosophy is simple: treat every client like family and every transaction with the same care and attention as his own.
Community Involvement
Actively involved in the Canyon Hills and Lake Elsinore communities through local events, sponsorships, and giveaways including annual community pie events, shred days, flag exchange drives, youth sports support, and neighborhood outreach programs. Proud to partner with local businesses, schools, and organizations to give back and stay connected with the community I serve.
HOBBIES/INTEREST
Spending time with family, staying active, attending local sporting events, following football and baseball, traveling, and staying involved in community activities. I also enjoy technology, marketing, and creative projects that help grow my business and better serve clients.
FAMILY
Married to my wife, Tia, and proud father of three girls. Family is extremely important to me and plays a big role in why I'm so passionate about helping others find the right place to call home.
Read More About Guillermo
Credentials
LICENSE
Real Estate - California - # 01880735
Designation
Military Relocation Professional
Specialties
Sellers
Buyers
Residential Property
Awards
View All Awards
Contact Information
Location
29997 Canyon Hills Road #1601 Lake Elsinore, CA, 92532
Note: Reviews may include other agents on their team
What clients say about this agent....
Responsive
Professional
Communicative
Knowledgeable
Outstanding
Trustworthy
Attentive
Hard working
Excellent negotiator
Available Remotely
Rudas5
Review for Member: Guillermo Altamirano
September 12, 2025
Local Knowledge
Process Expertise
Responsiveness
Negotiation skills
ZillowVERIFIED
My experience working with Guillermo and his team on the sale of my property was truly remarkable. From start to finish, they demonstrated professionalism, proactivity, and genuine helpfulness. Guillermo transcended expectations by finding a contractor to handle necessary repairs, making the entire process seamless. Guillermo, was exceptionalaEUR"maintaining clear communication and ensuring I was informed every step of the way. While we faced a hiccup with the offer, Guillermos innovative thinking and problem-solving abilities truly shone. He navigated a complex situation effortlessly, and I deeply admired his resourcefulness. In summary, I am thoroughly impressed with the level of service and commitment from Guillermo and his team. I wholeheartedly recommend them and look forward to working with them again!
Marcelo R.
Review for Member: Guillermo Altamirano
February 16, 2025
Local Knowledge
Process Expertise
Responsiveness
Negotiation skills
ZillowVERIFIED
Look no further this guy is the real deal. He is super knowledgeable and efficient. I thought it would take us months to find a vacation home, it literally took a week. We closed on our property in 21 days. He had everything lined from us I couldnt be happier with him.
Traceyanne C.
Review for Member: Guillermo Altamirano
December 10, 2023
Local Knowledge
Process Expertise
Responsiveness
Negotiation skills
ZillowVERIFIED
Selling my beloved family home in this fickle and high-interest market presented a few challenges but in the end, my realtor, GUILLERMO ALTAMIRANO and his team at the OSCAR TORTOLA - SELLING CANYON HILLS GROUP did a great job in getting get the deal done with a qualified buyer and closed without any hiccups within a matter of a few months. For that, and managing this sale with an out of town seller, I am extremely satisfied and will be forever be thankful to my realtor and the OTG group.
Brittany R.
Review for Member: Guillermo Altamirano
September 21, 2023
Local Knowledge
Process Expertise
Responsiveness
Negotiation skills
ZillowVERIFIED
Memo did an outstanding job at getting our home sold. From the beginning of the process in selling our home, he demonstrated expertise - you can tell he is a true professional in his field. I would recommend Memo to any family and friend in the area, he was absolutely phenomenal. From his knowledge, responsiveness and communication he was top of the game.
Bbnvmgnptw
Review for Member: Guillermo Altamirano
September 1, 2023
Local Knowledge
Process Expertise
Responsiveness
Negotiation skills
ZillowVERIFIED
Guillermo was amazing! He was super helpful throughout the whole experience, always available to answer any questions about selling our house! I would recommend him to anyone wanting to sell or buy a home. Highly recommended!