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About

Built with an owner's standard.

AUCTOR is a founder-led residential construction and development company serving the Pacific Northwest. We work on projects ranging from targeted property improvements and ADUs to major renovations, new homes and residential development.

Our perspective is shaped by both sides of the work: building for clients and investing in properties ourselves. That means we understand that good construction must balance design, durability, permitting, budget, schedule and long-term usefulness.

The name

Auctor: the one who builds it and stands behind it.

The name carries an older sense of responsibility — the person who originates a work and remains answerable for it. We use it plainly. It shows up in how we plan, how we communicate and what we are willing to put our name on, not in decoration.

Founders

Two partners, directly involved.

AUCTOR was founded by two partners with a shared interest in construction, real estate and the potential hidden in overlooked properties.

  • Founder photograph to be added

    Peter Prins

    Co-Founder

    Biography to be provided. Peter's work at AUCTOR spans construction delivery and the practical decisions that keep a project buildable, permitted and on schedule.

    • Construction management
    • Field execution
    • Permitting and inspections
  • Founder photograph to be added

    Thaddeus Copling

    Co-Founder

    Biography to be provided. Thaddeus's work at AUCTOR focuses on property evaluation, feasibility and the development side of the business.

    • Acquisitions and feasibility
    • Development strategy
    • Partner relationships

Values

The standard we hold ourselves to.

  • Build it properly

    The work should hold up. We choose methods and materials for how they perform over decades, not for how they photograph on day one.

  • Communicate clearly

    Direct answers about cost, schedule and constraints, including when the answer is not the one anyone wanted.

  • Think beyond the immediate project

    Every decision is weighed against how the property will be used, maintained and valued years from now.

  • Respect the property and the neighborhood

    Clean sites, considerate scheduling, and buildings that fit the street they sit on.

Service area

Focused on the greater Seattle–Tacoma region.

Greater Seattle–Tacoma region, Pacific Northwest. Coverage is being confirmed city by city, so the list below reflects where we work and where we are actively expanding. Ask us about your address and we will answer directly.

  • Seattle
  • Tacoma
  • Renton(inquire)
  • Bellevue(inquire)
  • Newcastle(inquire)
  • Kent(inquire)
  • Federal Way(inquire)
  • King County(inquire)
  • Pierce County(inquire)

What can we build from here?

Tell us about your home, lot, development opportunity or construction project.

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