Tortoise Construction LLC is a fully licensed, bonded, and insured design-build remodeling firm based in Milwaukie, Oregon — serving SE Portland, NE Portland, Lake Oswego, and the Portland Metro.
We specialize in the projects with the most at stake: home additions, second-story additions, ADUs, kitchen remodels, and whole-home transformations. Projects where the wrong contractor means a blown budget, a stalled schedule, and months of stress.
Our owner Mike Jeske spent ten years in IT before construction. He builds systems, not just rooms. That background is why Tortoise has a 5-step pre-construction process that locks every trade price, every finish, and every scope detail before demolition begins — and why we can offer a No Change Order Guarantee™ that no other Portland-area remodeler makes credibly.
BuildZoom score 106 — top 7% of 62,733 Oregon contractors. 5.0 Angi rating. Oregon CCB #214445. $1M general liability through Lloyds of London.
Want to see how we work? Check out our latest projects or get your free Project Risk Snapshot™ — a 30-minute call that identifies the biggest risks to your remodel budget and timeline before you commit.
74% of homeowners have renovation regrets (Houzz 2026). The reasons are always the same: costs came in higher than expected, timelines ran long, decisions couldn’t be undone. We built Tortoise to solve that problem — and we structured the whole company around three commitments.
Most contractors give you a rough number and start construction. We spend the weeks before demo locking every variable — so by Step 5, you have a fixed price backed by a written guarantee. Know the numbers before demo. That’s how the No Change Order Guarantee™ works.
We document every dimension of your space. Accurate measurements are the foundation of an accurate price.
We define exactly what your project includes — and what it doesn't. Scope creep stops here, before it starts.
Every finish, fixture, and material is chosen before construction begins. No mid-project decisions that blow the budget.
Every subcontractor price is locked before we break ground. This is the step most contractors skip. We don't.
You approve the complete plan and receive a fixed price — in writing, backed by our No Change Order Guarantee™.
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Licensed · Bonded · Insured | OR CCB# 214445 | WA License# TortoCL740KF
