Craig Semmelmeyer
Craig Semmelmeyer is Founder and Principal of Main Street Property Services, Inc. For more than 30 years, Mr. Semmelmeyer has specialized in the development, redevelopment, positioning, merchandising, and leasing of retail properties, mixed-use projects, downtown districts, and shopping centers throughout Northern California. As Founder and Principal, he serves as a development partner, strategist, and leasing agent, guiding projects from acquisition and entitlement through design, construction, merchandising, leasing, and long-term asset management.
Mr. Semmelmeyer is recognized for identifying underutilized and overlooked properties and transforming them into successful retail destinations that strengthen communities and create long-term value. His development and redevelopment experience includes Castro Valley Marketplace, Marketplace Shops, and the historic Flying A Service Station in Castro Valley; 234 Main Street, 310 Main Street, and 349 Main Street in Downtown Pleasanton; Lafayette Mercantile, Fiesta Lane, Park Plaza, and La Fiesta Square in Lafayette; Bel Aire Plaza in Napa; Pacheco Plaza in Novato; Salvio Pacheco Square in Concord; Park Street in Alameda; The Public Market in Emeryville; Downtown Pleasant Hill; The Marketplace at San Ramon; Ygnacio Plaza in Walnut Creek; and numerous other retail and mixed-use projects throughout the Bay Area.
Among his most notable accomplishments is helping lead the transformation of Castro Valley’s commercial core through successful public-private partnerships that reimagined obsolete properties as vibrant destinations for local businesses, restaurants, and community gathering. His work has also contributed significantly to the revitalization of Downtown Pleasanton, where, as a partner in Main Street Pleasanton, LLC, he helped redevelop and remerchandise multiple downtown properties that have become integral to the district’s success.
In addition to directing the company’s development activities, Mr. Semmelmeyer advises property owners, developers, municipalities, and institutional investors on redevelopment strategies, project positioning, tenant mix, and long-range asset enhancement. Prior to founding Main Street Property Services, Inc. in 1997, he was a retail leasing specialist with Terranomics Retail Services in San Francisco and TRI/McMasters & Westland Commercial Real Estate in Walnut Creek, where he developed expertise in retail leasing, market analysis, and project merchandising. Mr. Semmelmeyer is a California Licensed Real Estate Broker, an active member of the International Council of Shopping Centers (ICSC), and a frequent speaker on retail development, downtown revitalization, and community-based real estate strategies.
Mike Semmelmeyer
Mike Semmelmeyer is a Principal of Main Street Property Services, Inc., where he specializes in retail property sales and leasing across the San Francisco Bay Area.
He represents buyers and sellers, as well as tenants and landlords, providing strategic guidance in site selection, lease negotiations, investment sales, and portfolio optimization. Mike’s balanced approach ensures that every client, whether an investor, retailer, or property owner, receives tailored solutions that align with their goals.
Before stepping into his leadership role at Main Street Property Services, Inc Mike built a diverse and accomplished career in both commercial real estate and renewable energy. Mike was part of the brokerage team at Colliers International and Main Street Property Services, where he honed his skills in market analysis, deal structuring, cultivating relationships with local, regional, and national retailers, and client representation in competitive real estate markets. Expanding his expertise beyond real estate, Mike also worked as a sales manager with Sunrun, a leading residential solar energy company, where he contributed to sales growth and customer engagement in the rapidly evolving clean energy sector.
Throughout his career, Mike has been the driving force behind the commercial real estate success of several major mixed-use new development projects and shopping centers throughout the San Francisco Bay Area. His extensive advisory portfolio consists of real estate titans such as Equity Residential, The Related Companies, Carmel Partners, Lowe Enterprises, Blake Griggs, Wood Partners and Prudential.
A proud United States Navy veteran, achieving the rank of Air Traffic Controller, Petty Officer, Second Class. Mr. Semmelmeyer served in Arlington National Cemetery as a casket bearer as part of the Presidential Honor Guard, Washington, DC. He brings the discipline, integrity, and mission-focused mindset he developed during his military service into every professional endeavor. His leadership style reflects a commitment to service, teamwork, and delivering results under pressure.
Known for his approachable demeanor and deep understanding of retail market dynamics, Mike is passionate about creating value for his clients while fostering vibrant, thriving communities.
Mr Semmelmeyer received a Bachelor of Science degree in Aeronautics from Embry-Riddle Aeronautical University in Prescott, Arizona. Mr Semmelmeyer is a licensed real estate salesperson in the State of California and an active member of the International Council of Shopping Centers (ICSC).
Charon Semmelmeyer
Charon Semmelmeyer is the Office Manager for Main Street Property Services, Inc. As the office manager she uses her keen organizational skills, twenty-five years of experience, and personable demeanor to maintain the high standards that have defined Main Street Property Services for the past two and a half decades.
Mrs. Semmelmeyer is instrumental in the coordination and administration of operations for the company including corporate bookkeeping, human resources, corporate compliance and maintenance of the company’s standards.
Main Street Property Services Clients appreciate Mrs. Semmelmeyer’s commitment to providing the highest level of service, maintaining excellent communication while going the extra mile to exceed the expectations of our clients and partners. Tenants, brokers, and vendors appreciate the grace that she brings to her profession each day.
Mrs. Semmelmeyer has mastered lease drafting, property accounting, lease administration and facility management and has been essential employee at Main Street Property Services, Inc. since 1999.
Mia Wu
Mia Wu is the Graphic Design Coordinator at Main Street Property Services Inc. In her role, Mia collaborates closely with marketing, leasing, and operations teams to develop creative assets that support property marketing, corporate branding, and client communications.
With a strong eye for detail and a passion for clean, effective design, Ms. Wu ensures visual consistency across digital and print platforms while balancing creativity with strategic objectives. Her work helps translate complex ideas into engaging visuals that resonate with diverse audiences and enhance the company’s overall market presence.
Ms. Wu’s collaborative approach, combined with her technical expertise and design sensibility, makes her a valuable contributor to Main Street Property Services’ ongoing growth and brand evolution.