Crafting exceptional homes through inspired design and flawless construction.
Tortoise Construction is a licensed design-build remodeling firm based in Milwaukie, Oregon, working across SE Portland, Lake Oswego, Milwaukie, Happy Valley, Oregon City and the West Hills.
Design and construction happen under one roof, which means one team is accountable from the first drawing to the final walkthrough. No handoffs between a designer who does not build and a builder who did not design.
What sets the process apart is what happens before demolition. A 5-step pre-construction process resolves scope, selections and structural unknowns up front, so the price is locked before the first wall comes down. That is the basis of the No Change Order Guarantee: homeowners are not handed a revised invoice halfway through because something was discovered late.
Projects include kitchen remodels, bathroom renovations, basement conversions, home additions, ADUs, garage conversions and whole-home remodels, with a focus on older Portland-area homes where undersized framing, unpermitted work and dated systems are the norm rather than the exception.
Free online cost estimators give a realistic budget range in minutes. For homeowners ready to talk, the Project Risk Snapshot™ is a free 30-minute consultation covering budget range, the specific risks in the project and an honest timeline, with no obligation. 12-month zero-interest financing is available.
Licensed, bonded and insured in Oregon (CCB #214445) and Washington (TortoCL740KF).
- Portland, OR, SE Portland, OR, West Hills, Portland, OR, Milwaukie, OR, Lake Oswego, OR, Happy Valley, OR, Oregon City, OR, West Linn, OR
- No Change Order Guarantee, fixed price locked before demolition
- 5-step pre-construction process
- Design-build: design and construction under one roof
- Free Project Risk Snapshot™, a 30-minute no-obligation consultation
- 12-month zero-interest financing available
- Free online cost estimators for kitchen, basement, addition and whole-home projects
- Specialists in older Portland-area homes
- Licensed, bonded and insured in Oregon and Washington
- Home Building Association of Greater Portland (HBA)
- NARI Pacific Northwest
- Oregon CCB #214445
- Washington Contractor License #TortoCL740KF
- Houzz verified professional
- Cash, Checks, Debit cards, Credit cards
Custom kitchen remodels across SE Portland, Lake Oswego and Happy Valley, from layout changes and cabinetry to full gut renovations. Design and construction are handled by one team, and the 5-step pre-construction process settles scope and selections before demolition so the price is fixed going in. Backed by the No Change Order Guarantee. 
Bathroom renovations in SE Portland, Lake Oswego and Happy Valley, including primary suites, guest baths and aging-in-place upgrades. Older Portland-area bathrooms often hide undersized framing, dated plumbing or unpermitted work, so those unknowns get resolved during pre-construction rather than mid-project. Fixed price locked before demolition. 
Home additions, second-story additions, ADUs and garage conversions across the Portland Metro. Design-build means one accountable team from drawings through permitting and construction, which matters most on projects where structural work and jurisdiction review drive the timeline. Price is locked before demolition starts. 
Whole-home remodels in SE Portland, Lake Oswego and the West Hills, from full-house refreshes to down-to-the-studs renovations. Every room, system and finish is priced as one fixed number before demolition, rather than a series of separate scopes that drift. Licensed, bonded and insured in Oregon and Washington. 
He spent ten years in IT before moving into construction, and it shows in how the company runs. He builds systems, not just rooms. That background is why Tortoise works from a 5-step pre-construction process that locks every trade price, every finish and every scope detail before the first wall comes down, and why the No Change Order Guarantee is a process outcome rather than a marketing promise.
Mike leads design-build projects across SE Portland, Lake Oswego, Milwaukie and the West Hills, with a focus on the work where getting it wrong is expensive: additions, ADUs, second-story additions, whole-home remodels and older Portland houses that hide surprises behind the drywall.
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