CG Engineering, civil and structural engineering and planning for residential and commercial projects

Custom Homes

Let us help you design your dream home. From the early stages of land-use planning, through civil and structural engineering, we can work with your chosen architect to be sure your home is designed and permitted efficiently.

Damage Assessment and Repair

After a flood, fire, storm or accidental damage we will work with your insurance company to create a safe repair and restore your home. We also specialize in repair for damage caused by dry rot.

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Foundation Repair

Are you worried your house might be settling? We can preform a site visit to investigate your concerns. We can also determine the likely cause of settlement and help you understand your options to solve this common problem.

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Slope Stabilization

If you are concerned about a slope on or near your property, or if you have already experienced a slope failure, we can help. We will assess the slope, make recommendations and design a safe and efficient solution to stabilize the area and prevent a future slide.

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Drainage, Ponding and Water Management

Is your home, yard, driveway or garage affected by water ponding or drainage problems? This is a common issue in the Pacific Northwest. Our civil engineers can investigate the cause of your problem and then design and permit a water management solution.

Decks and Balconies

Planning to upgrade your outdoor space with a new deck or balcony? Wondering if your existing deck is safe to use? We can assess your current structure for safety and design a repair, or design and permit a new one.

Landscape Structures

What to enhance your landscape with a gazebo, pavilion or other standalone structure? We can help with engineering design and permitting for simple to elaborate landscape structures.

Why choose CG Engineering?


If you are preparing for a renovation, building a home or maintaining landscape, it may benefit you to consult with a structural or civil engineer before your project begins. CG Engineering provides unique, cost-effective solutions for a wide variety of home construction, repair and renovation projects. Our engineers are well-educated on local jurisdictional requirements and can assist with permitting and construction administration. We will take the time to learn your goals and help make them a reality, simply and safely.

Structural Engineering Services:


Civil Engineering Services:


  • Art and signage
  • Waterfront structures
  • Seismic design
  • Permitting services
  • Site development and design
  • Drainage design
  • Street Improvements
  • Permitting services

Homeowner FAQs


How much do structural/civil engineering services cost?

Each project is unique, so we take the time to carefully predict the amount of hours your project will take, and provide you with a project-specific estimate for our services. Depending on your preference, we can provide our services on an hourly fee or fixed fee basis.

How long does the design process take?

Project timeframes can vary widely and are subject to many external factors. The major factors involved in determining the timeline for design of a project are the size of project and the involvement of other design professionals. When involved, we usually need the survey and geotechnical study to be complete and the architect to be well into design before we can begin. We will do our best to work with your schedule and meet your needs. After design is complete, you will likely need to permit your project through the local building department. CG can assist you with that as well.

What happens if we want to make changes to our plans after you've begun construction documents?

Changes that affect work we have already done can result in additional fees. We will evaluate the impact of the proposed change and let you know about additional fees in advance.

How long does it take to get a permit?

Every jurisdiction will have a different timeline for processing permits. We find that a typical time frame is three to six weeks, but it can be highly dependent on the current workload of the permitting department in your jurisdiction at the time of the project. Some counties, such as King County, will take much longer. Our engineers are experienced with most local jurisdictions and can advise you on typical time frames for permitting your project at the time it starts.  

Our Work


Mark Osterhus Residential Repair Client

It was a pleasure working with your firm and your people.  The problem description was quickly and fully understood. An analysis was forwarded to me in time get the repair implemented and  meet my deadline.”

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