Business Details
50+ Years
experience
Trusted Concrete & Masonry Experts in San Francisco
Established in 1906, Lewis M Merlo has built a legacy of excellence in concrete and masonry services across the San Francisco Bay Area. Our team combines over a century of experience with modern techniques to deliver high-quality workmanship for residential, commercial, and industrial projects. We specialize in seismic retrofits, foundation construction, ADA compliance solutions, and custom concrete designs, serving homeowners, contractors, and architects. Our commitment to precision, durability, and client satisfaction is reflected in our portfolio of landmark projects and consistent client testimonials.With a focus on innovation and reliability, we provide tailored solutions for complex challenges, including tight-access sites and historic preservation. Our licensed professionals prioritize clear communication, competitive pricing, and timely execution, ensuring every project meets the highest standards of safety and craftsmanship.
Services
Seismic Retrofits
Foundation Construction
ADA Compliance
Custom Concrete
Site Surveys
Historic Preservation
Driveway Repairs
Retaining Walls
Budget Development
Exploratory Work
Details
- Year established: 1906
Highlights and features
- Established in 1906 with century-spanning expertise in concrete solutions
- Specialize in complex projects requiring custom formwork and tight-access execution
- Proven track record with landmark buildings and seismic retrofit projects
- Dedicated team provides personalized service from initial estimate to completion
- Committed to exceeding industry standards for durability and client satisfaction
What people say
Courteous and respectful
Responsive
Excellent job
Competitive bid
Knowledgeable team
Services
Seismic Retrofits
We strengthen buildings against seismic activity through foundation bolting, cripple wall bracing, and shear wall installation. Our engineers design code-compliant solutions for residential and commercial structures. Clients benefit from enhanced safety and property value preservation in earthquake-prone regions.
ADA Compliance
Our team implements Americans with Disabilities Act-compliant features including ramp construction, tactile warning surfaces, and accessible entryways. We collaborate with city officials to ensure current code adherence. Clients receive functional, safe access solutions that meet legal requirements and improve usability.
Custom Concrete
We create bespoke concrete elements with specialized finishes, colors, and textures for architectural features. Services include stamped concrete, custom molds, and decorative wall systems. Clients receive unique, durable installations that enhance property aesthetics while maintaining structural integrity.
Foundation Construction
We build durable foundations for new constructions and repair existing ones using reinforced concrete techniques. Services include slab pouring, underpinning, and drainage system installation. Clients benefit from stable, long-lasting structural support that prevents future settlement issues.
Historic Preservation
Our specialists match original concrete materials and techniques for historic building restoration. We maintain architectural integrity while incorporating modern durability enhancements. Clients preserve historical value through precise replication and code-compliant upgrades for protected structures.
People
Daniel O'Connor
President
Daniel O'Connor leads Lewis M Merlo with strategic vision, overseeing operations and client relations. With decades of construction industry experience, he ensures the company maintains its century-old commitment to quality while adapting to modern demands.
John Biasotti
Vice President
John Biasotti manages project execution and team coordination, bringing extensive technical expertise to complex concrete solutions. He ensures adherence to timelines and quality standards across all commercial and residential projects undertaken by the company.
Michelle O'Connor
Treasurer
Michelle O'Connor oversees financial operations, maintaining fiscal responsibility while supporting client-focused initiatives. Her financial expertise ensures competitive pricing and transparent budget management for every project the company undertakes.
Martin Gomez
Field Manager
Martin Gomez supervises on-site operations, ensuring technical precision and safety compliance for all field activities. With hands-on construction experience, he coordinates crews to deliver high-quality results efficiently across diverse project types.
Owen Doherty
Estimator
Owen Doherty provides accurate project cost assessments and client consultations, combining technical knowledge with customer service excellence. His responsive approach ensures clients receive clear, competitive bids tailored to their specific project requirements.
Questions
What concrete services do you specialize in?
We specialize in seismic retrofits, foundation construction, ADA-compliant accessibility solutions, custom concrete designs, and historic preservation projects for residential, commercial, and industrial clients.
How long has your company been in business?
Lewis M. Merlo Inc. has provided concrete and masonry services in the Bay Area since 1906, maintaining a reputation for quality and reliability for over a century.
Which areas do you serve?
We serve the entire San Francisco Bay Area, including San Francisco, Oakland, Berkeley, San Jose, and surrounding communities.
Do you handle ADA compliance projects?
Yes, we have specialized expertise in ADA compliance, including accessible building entrances, curb ramps, and code-compliant sidewalk construction.
What is your project process?
We begin with a site survey and consultation, provide detailed estimates, develop customized solutions, and execute projects with regular client communication throughout the process.
