Your Move,
Handled
With Care.

HomesInSDCounty Ethical, Expert, and Always in Your Corner.

The Mattonen Team is a husband-and-wife real estate partnership built on shared values, complementary strengths, and an unwavering commitment to their clients’ best interests. Brad and Karen Mattonen operate as HomesInSDCounty at Coldwell Banker West’s 4S Ranch office — recognized as Top Realtors for Social Media and among the Top 5 San Diego Real Estate Experts — and have earned a reputation for tackling the most complex, sensitive transactions in the market with integrity, skill, and heart.

Brad Mattonen · REALTOR®
Multi-Family Management · National RE Marketing · Probate & Pre-Foreclosure · DRE# 02062665
Brad Mattonen brings a remarkably multifaceted background to his work as a REALTOR®. Before joining Coldwell Banker West, he accumulated experience managing multifamily residential properties, orchestrating marketing campaigns for a national real estate magazine, and working in the Fire, Life Safety, and Security Industries — a combination of disciplines that gave him a uniquely broad perspective on property, value, and client service.

Brad chose Coldwell Banker West specifically because of the brand’s long history of industry leadership, cutting-edge technology, and commitment to serving clients better than anyone else. His expertise in digital marketing and social media has made the HomesInSDCounty brand one of the most recognized and trusted in the 4S Ranch corridor.

Brad specializes in complex transitions — probate, pre-foreclosure, Prop 19, and equity defense — and provides free strategic guides on each of these topics. When situations aren’t simple, Brad is exactly who clients need. His motto: protect your equity and deliver results with integrity, even when the market turns messy.

Karen Mattonen · REALTOR®
Bold Negotiator · Fierce Advocate · Top 5 SD RE Experts · DRE# 02044711
Karen Mattonen is not your average agent — and that is exactly why her clients win. With a bold mix of empathy, sharp negotiation skills, and relentless advocacy, Karen guides buyers and sellers through one of the biggest decisions of their lives — making it clear, confident, and profitable. She brings a rare combination of business acumen and genuine heart to every transaction.

Karen’s clients describe her as someone who makes you feel genuinely supported through every step — someone who fights for your best interests without ever losing the warmth and empathy that makes the process feel human. She specializes in probate, equity defense, and complex transitions, and serves clients across 4S Ranch, Poway, Rancho Bernardo, and all of San Diego County.

Together, Brad and Karen don’t just close deals — they build long-term relationships rooted in trust, results, and the shared satisfaction of helping clients achieve their real estate dreams. Your goals are their priority.