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Your Trusted Engineering Partner in Seattle
Sider & Byers is a mechanical and electrical engineering firm with over four decades of experience serving clients in Seattle and throughout the western United States. Our firm distinguishes itself through the intensity of principal involvement, meticulous attention to detail, and seamless coordination across projects. Specializing in fire protection, plumbing, HVAC, and electrical systems for buildings, we deliver tailored engineering solutions that align with architectural visions. Our long-standing reputation is built on reliability, technical expertise, and a commitment to simplifying complex project requirements. Clients consistently recognize our timeliness, proficiency, and collaborative approach, which enhance both functionality and design. With a focus on innovation and client satisfaction, we have become a trusted partner for diverse building types, including residential, educational, religious, and public facilities.

Our work spans affordable housing, market-rate developments, libraries, fire stations, healthcare centers, and custom homes, reflecting our adaptability to varied client needs. By prioritizing sustainability and code compliance, we ensure that every project meets modern standards while addressing unique challenges. Our teams deep understanding of regional building practices and regulatory environments enables efficient project execution. Through decades of dedicated service, Sider & Byers has established itself as a leader in engineering excellence, driven by a passion for creating safe, efficient, and enduring built environments.
Services
Fire Protection Systems Plumbing Design HVAC Engineering Electrical Systems Green Building Solutions
Highlights and features
  • Over 40 years of experience in mechanical and electrical engineering
  • Intensive principal involvement in every project
  • Specialized expertise in fire, plumbing, HVAC, and electrical systems
  • Proven track record with diverse building types across the West
  • Commitment to sustainability and code compliance
What people say
Exceptional services Timely and proficient Great humor Simplify technical requirements Enhance architecture
Services
Fire Protection Systems
We design comprehensive fire protection systems that integrate sprinklers, alarms, and suppression technologies to meet safety codes and building requirements. Our engineers ensure compliance with local and national standards while optimizing system efficiency. Clients benefit from tailored solutions that enhance occupant safety without compromising architectural design.
Plumbing Design
Our plumbing design services cover water supply, drainage, and sanitation systems for residential, commercial, and institutional buildings. We prioritize water efficiency, durability, and ease of maintenance in every project. By leveraging modern materials and techniques, we deliver reliable plumbing solutions that support sustainable building operations.
HVAC Engineering
We engineer heating, ventilation, and air conditioning systems that balance energy efficiency with occupant comfort. Our designs adapt to diverse building types, from schools to healthcare facilities, ensuring optimal indoor air quality. Clients receive systems that reduce operational costs while meeting rigorous performance standards.
Electrical Systems
Our electrical engineering services include power distribution, lighting, and control systems for new constructions and renovations. We focus on safety, code compliance, and energy efficiency in every design. Clients gain access to robust electrical infrastructure that supports modern building technologies and future scalability.
Green Building Solutions
We incorporate sustainable practices into engineering designs, including LEED-certified projects and energy-efficient systems. Our approach reduces environmental impact while lowering long-term operational costs. Clients benefit from expertise in green building standards and innovative technologies that align with sustainability goals.
Questions
What types of projects does Sider + Byers specialize in?
We specialize in mechanical and electrical engineering for buildings, including affordable housing, market-rate housing, libraries, fire stations, schools, religious facilities, and healthcare centers.
How long has Sider + Byers been in business?
We have thrived in Seattle for over 40 years, designing systems for buildings across the western United States.
What areas does Sider + Byers serve?
While based in Seattle, we serve clients throughout the western United States, including Washington, Oregon, and California.
What sets Sider + Byers apart from other engineering firms?
Our firm emphasizes principal involvement, attention to detail, and coordination, ensuring tailored solutions that align with architectural visions and client needs.
Does Sider + Byers work on sustainable building projects?
Yes, we incorporate green building practices and have experience with LEED-certified projects and energy-efficient system designs.