What We Can Do

Our Services

Pipeline air in large buildings.


HVAC, Hydronic, Special Ventilation, Refrigeration, Load Analysis, and More



Site Electrical, Power Distribution, Lighting, Backup Power, Fire Alarm, Low Voltage and More

Industrial pipes for plumbing system on building.


Sanitary Waste, Vent, Water, Storm, Gas, Medical Gas, Pool/Spa, Heat Recovery and More


Fire Protection

Fire Sprinklers, Smoke Management, Fire Alarm, Special Agents and More



Code Compliance, Modeling, LEED, Green Built, Energy Star, Load Calculations, ROI and More

Landscape transform into urban area with machinery, people are working. View on construction site.

Civil Engineering

Public Works, Site Evaluation, Pumping, Detention, Utilities, Grading, Environmental and More

Who We Are

Abossein Engineering

A good place begins with a good engineer. From the quality of your foundation, to the air you breathe, your comfort, your safety, even the energy you save – all these things depend on competent engineering. Abossein has proudly engineered over 100 million square feet of space since we first opened our doors 30 years ago.

Abossein is a full service engineering firm, offering Mechanical, Electrical, Civil, Structural, LEED, Fire Protection and Safety engineering, as well as Site Management where needed. We have a broad portfolio, and the ability to work in all 50 states.

Relationships are the rock that Abossein is built upon. We hold as extremely valuable the trust our clients place in us, and strive to deliver a team based effort that ensures the best possible solutions to your needs.

Over 90% of our business comes through the growth of our clients and their referrals to us. We have solid client and employee retention.

What People Say


“We have worked with Abossein Engineering for more than 25 years. Alex Abossein and his firm are all very knowledgeable and easy to work with. They work closely with our design team and other trades involved in our projects, always trying to eliminate any conflicts before work is started in the field. They have always been able to meet even the most aggressive schedules and still produce at the highest level.”

Bill Quackenbush
Tri-State Plumbing

“Abossein Engineering has provided engineering services for over 30 of our Senior Living Community projects over the course of 25 years. They have knowledgeable, thoughtful designers, and are considerate of our design intent. They are practical, creative, and are a real asset to our team.”

Steve Wattenbarger AIA
Wattenbarger Architects

”We have been working with Abossein for over 20 years. Good consultants are an invaluable resource when designing a complex building, and Abossein Engineering has consistently performed at a high level of excellence. They have been great to work with, looking at cost effective alternatives to design solutions and diligent in coordination of their disciplines.

Abossein Engineering is my first choice of consultant because of their successful track record, their competitive pricing, and their commitment to meeting tight schedules. I highly recommend them.”

Donald Flynn
Managing Architect, American Property Development

“Abossein has provided integrated Mechanical, Plumbing and Electrical design services for us for multiple projects. All these projects presented unique challenges that Abossein handled exceptionally. Their people were actively engaged throughout the design and helped us anticipate and resolve design issues before problems arise. Most importantly, by providing a lead contact across all disciplines, they made things easy for me. I only had one relationship to manage, and can rely on Abossein to coordinate internally as necessary. We get the best of both worlds, small firm customer service combined with the varied expertise of a larger company.”

Jeff Reibman, AIA LEED AP
Weber Thompson

“From an electrical contractor’s standpoint Abossein is exemplary at getting our input to incorporate into their design. This is especially valuable on design-build projects because it gives us an opportunity to provide a complete product within the budget constraints of our proposal to the general contractor. This teaming effort by Abossein, our company, other subcontractors, and the general contractor allows for a smooth design process. In a world where most engineers simply copy and paste boiler-plate material Abossein does a great job providing cutting edge designs that still can meet your budget.”

Nathan Howat
Vice President, Blue Mountain Electric Inc

“Abossein Engineering has always been very responsive, both in their design and in their proposal efforts. They are very effective at balancing the end users needs with the contractor’s budget. Abossein is my first choice for electrical engineering firms.”

Shaun Hall
Project Manager, Safari Electric

“I have worked with Abossein Engineering for the past two decades and have had excellent working relations. Much forethought into each specific condition is done before they provide their expert advice. I have 100% confidence in their follow-up on any issues that come up during plan review or in the construction process. They are the MEP engineers of my choice.”

Howard Kimura
HG Kimura Architect, PLLC

“It has been a great pleasure to work with Abossein Engineering and on our seniors housing communities. I have worked directly with Gary Womack for many years now. Gary is a knowledgeable and thoughtful designer, and is considerate of our design intent. He is practical and creative, a real asset.”

Ross Jones, AIA
Wattenbarger Architects

“We have worked with Abossein since 1990, and find them to be diligent in their pursuit of solutions that work for client and owner, budget and environment, efficiency and excellence. They honor their word and are easy to communicate and work with. And in the rare occasion that a mistake occurs, they promptly and efficiently make the required adjustments. We are very happy to depend on Team Abossein as our engineering consultant.”

Rick Lentz, AIA
Merrick Lentz Architecture

Visit Us
18465 NE 68th St, Suite #200
Redmond, WA 98052
Email Us
Call Us
(425) 462-9441