Ongaro & Sons — San Anselmo, CA

Business Overview

Ongaro & Sons San Anselmo CA is a family-owned plumbing, heating, cooling, and electrical company serving Marin and surrounding counties since 1932. The company handles both residential and commercial projects. They offer emergency service for urgent plumbing, gas, HVAC, and electrical issues, with technicians available for after-hours calls.

The team includes PHCC-certified plumbers and NATE-certified HVAC technicians. Staff are trained to protect homes during work and follow local codes and manufacturer guidelines. Jobs range from small repairs to full system replacements.

Key Services

Work is grouped by trade to make it easy to find what’s needed:

• Plumbing: leak detection, drain and sewer repair, water heater installation and repair, bathtub/shower/sink/toilet installation and repair.
• HVAC: system installation, routine maintenance, emergency repairs, and energy audits for older houses that need better heating and cooling efficiency.
• Electrical: panel upgrades, circuit breaker and outlet repair, EV charger installation, lighting and outdoor electrical work, and whole-home electric inspections.
• Gas and backup power: gas line and generator installation and repair.

Areas Served

Ongaro & Sons San Anselmo CA serves towns across Marin, Sonoma, Napa, and parts of Contra Costa and Solano counties. Common service areas include:

• San Anselmo, San Rafael, Larkspur, Mill Valley, and Tiburon
• Novato, Novato area communities and Ross Valley
• Petaluma, Santa Rosa, Sonoma, and Windsor
• Napa, Yountville, and Calistoga
• Richmond, El Cerrito, Hercules, and Rodeo
• And many other nearby towns across Marin and Sonoma counties

Company History

Ongaro & Sons traces its roots to Ernest V. Ongaro, who opened the business in 1932. The company grew alongside the region, serving homes built in the pre- and post-war eras, and newer construction near the bay. Third- and fourth-generation family members now work in the company, keeping long-held practices like careful property protection and clear warranty policies.

They maintain a steady focus on ongoing technician education and follow nationally recognized standards on every job. That approach helps when working on older plumbing and wiring commonly found in Marin homes.

Leadership

Ernest Ongaro and his cousin Donald lead the business today. Ernest shares a family history of hands-on learning and a long-term presence in the community. The leadership stays involved in local trade groups and supports training for employees to keep skills current.

Specialties & Highlights

• Family-owned since 1932 with multi-generation experience.
• PHCC and NATE certifications on staff for code-focused workmanship.
• Parts and labor warranties that go beyond standard offers.
• Careful property protection and clean work habits on every job.

Why Locals Choose Ongaro & Sons

Residents of Marin and nearby counties hire Ongaro & Sons San Anselmo CA for reliable service and a team that knows local homes and weather patterns—foggy, damp winters and dry summers that affect pipes and HVAC systems. The family name on the truck signals decades of local work and steady service.

For a practical, local approach to plumbing, heating, cooling, and electrical work, homeowners and businesses in the area contact Ongaro & Sons San Anselmo CA for clear estimates, trained technicians, and service that respects their property.

Hours

Mon–Fri: 7:30 AM–5:00 PM • Sat: 7:30 AM–2:00 PM • Sun: Closed