Who is
Locke Engineers?
Founded in 1978 by Larry Youngman, the firm has been providing continuous structural and civil engineering services clients in the Pacific Northwest. In 2004, long-time employee Greg Locke bought the firm from Mr. Youngman and eventually changed the name to Locke Engineers, Inc.
Carrying on what Mr. Youngman had started, our engineers are cross-trained in civil and structural engineering & design to allow us to provide a broad range of services to our clients. We are versed in planning and site development codes, ADA requirements, stormwater quality and detention design, improvements of public infrastructure, development in wetlands and preparation of Erosion and Sediment Control Plans.
To compliment our civil expertise, our engineers can provide structural design for buildings and other structures allowing clients to work with one engineering firm for these services. With the recent addition of surveying services, we are able to seamlessly provide pre-design surveys and construction staking once construction starts.
Meet the Team

Owner / Principal Engineer
Greg Locke, PE, SE
Greg is a licensed civil and structural engineer in Oregon and licensed civil engineer in Washington.
Greg joined the firm (formerly C.L. Youngman, Inc.) in 1988 after graduating from Oregon State University. All his professional experience has been with Locke Engineers, Inc. Duties included client contact, contract negotiation, project administration, project management, quality assurance and management functions of firm. Greg also coordinates the project team for overall project design, is responsible for periodic quality control review of the construction plans, initial project startup and general overview of the engineering team's work.

Project Engineer
Matthew Osborn, PE
Matthew is a licensed civil engineer in Oregon.
Matthew joined the firm in 2015 after graduating from Oregon State University. All his professional experience has been with Locke Engineers, Inc. Duties included client contact, contract negotiation, project administration, project management and civil & structural engineering design.

Engineering Designer
Natalia Izquiredo, EIT
Nati joined the firm in 2022 after graduating from Oregon State University. All her professional experience has been with Locke Engineers, Inc. Duties included client contact, project management and civil & structural engineering design,

Sr. Civil Engineering Designer
Charles Fisher
Charles performs detailed design and prepares plans for various civil projects including drainage analysis, subdivisions, parking lots, rain-gardens, detention/treatment facilities and large-scale site grading and utilities. Duties included client contact, preparation of project specifications, performing site observations and construction phase administration.

Project Surveyor
Mosier Locke, PLS
Mosier is a licensed surveyor in Oregon, Washington and Idaho.
Mosier graduated from Oregon Tech in 2019. He joined the firm in 2024 after gaining experience in land surveying while employed in Washington.
Duties included client contact, contract negotiation, project administration, project management and civil & structural engineering design.

Jr. Engineering Designer
Seth Dunham, EIT
Seth joined the firm in 2024. He graduated from Oregon State University in 2024. Duties included civil & structural engineering design.
