

About Martina
With over two decades of experience, Martina Diaz has built a thriving real estate business in Chula Vista and San Diego County, powered by a strategic, referral-driven approach. Specializing in move-up buyers, VA buyers, and contingent sales, she blends proven systems, expert negotiation, and personalized service to guide clients through seamless transactions. With her Coldwell Banker Luxury designation, she also provides elevated service to sellers and buyers in the luxury market.
A Strategic Process for Selling & Buying—Built on Referrals
Real estate isn’t just about transactions—it’s about trust, precision, and results. That’s why Martina’s approach is highly strategic, ensuring every client has a clear path to success.
For Sellers: Maximizing Profits & Selling with Confidence
Customized Pricing Strategy – Data-driven pricing to attract serious buyers
High-Impact Marketing – Professional photography, social media, and targeted advertising
Expert Negotiation– Proven tactics to secure the best possible terms
Seamless Transaction Management– A stress-free process from list to close
For Buyers: A Strategic Advantage in a Competitive Market
Access to Off-Market & Early Listings– Get ahead of the competition
Winning Offer Strategies – Craft strong, compelling offers that stand out
Comprehensive Market Insights – Guidance on pricing, neighborhoods, and long-term value
Streamlined Process from Start to Close – Coordination with lenders, inspections, and escrow
A Business Built on Trust & Proven Results
The majority of Martina’s business comes from referrals and repeat clients—a testament to the exceptional experience and results she delivers. Her process is tailored, proactive, and data-driven, ensuring each client buys or sells with confidence.
Backed by Coldwell Banker West, she combines cutting-edge marketing, in-depth market knowledge, and a personalized, referral-based approach to real estate success.
Beyond real estate, Martina has been happily married to her husband, David, for 30 years and enjoys spending time with him and their poodle, Valentino—because, just like in real estate, loyalty and strong relationships matter most.
Transaction History
- 1 Year
- 2 Year
- 5 Year
Neighborhoods Martina Has the Most Experience In
Martina's Listings and Deals
Other Experience
Martina's Reviews
1/16/25Daniel Sanchez Quintero
After working with Martina to buy our first home 4 years ago, we were more than excited to work with her again to buy our second. She made the complex task of selling and buying simultaneously super easy, ensuring we were in the best position for both transactions. She is a dedicated agent who always puts her clients first. We couldn't have been happier and absolutely recommend her to anyone looking to buy or sell a home in San Diego.
5/25/24vannia garcia
Martina went above and beyond to help me purchase my first home. She was always on top of new listings and knew exactly what I was looking for. If something new came on the market Martina was available to take me on a showing that same afternoon (and she always came prepared with snacks and water). She was patient and never gave up on me. Answered all the questions I had and explained every step of the process.Martina and I have stayed in contact since and have become good friends. She is always positive and outgoing. I can’t wait for us to work together when it’s time to purchase my second home. Martina is the best hands down! Thank you Martina and team!
5/22/24Bryan Boardway
Martina made finding and purchasing our first home a breeze! She was knowledgeable and patient, addressing every question or concern we had along the way. We definitely recommend her and can’t wait to call her when we’re ready for our next home purchase. Thank you Martina!
