Owner's Representative Services
Residential Construction Management in Portland, OR
Your budget, schedule, and quality, watched by someone who answers only to you. Every bid, invoice, and change order gets read before you sign.
Deb Zsarko brings 30 years of design-build experience to your side of the table. Licensed in Oregon and Washington.
What Construction Management in Portland Means for Homeowners
Search for construction management in Portland and you'll find firms built for office towers and public works. Almost no one brings that owner-side discipline to homes. Z Squared Holdings does. When six figures of your money are on the line, someone should read every bid, invoice, and change order with your interests as the only agenda. That's the job. We work for you, not the builder.
Deb Zsarko has spent 30 years in design-build construction. She knows the pressures owners, contractors, engineers, and architects each work under, and how to keep them pulling in the same direction so your project finishes on schedule, at the quality you were promised.
Who Hires an Owner's Representative in Portland
Owner-side oversight for budget, schedule & quality
Residential construction management in Portland, OR is for owners whose projects are too big, too complicated, or too far away to watch alone. If any of these sound like you, an owner's rep is the missing piece.
Custom-Home Clients
Bids, Contracts & Schedule
You have the architect and the drawings. Now you need fair bids, solid contracts, and a schedule a builder can actually hit.
Remodels Gone Sideways
Project Rescue
The job stalled or the numbers stopped adding up. Experienced eyes can assess the work, steady the budget, and get it moving again.
Out-of-Area Owners
On-Site Advocate
You own rental or family property in Portland but live somewhere else. You need a local advocate walking the site for you.
Small Residential Developers
No In-House Overhead
You build a few projects a year and want professional construction project management in Portland, Oregon without carrying in-house staff.
Construction Management vs. General Contracting
It comes down to who the professional answers to. A general contractor sells you a finished project: they price the work, hire the subs, and carry the risk of building it. That's a valuable role, and we fill it ourselves on many projects. But the GC's margin lives inside your construction budget, so their incentives and yours aren't always identical.
A construction manager, or owner's representative, sits on your side of the table. You pay a transparent fee, and in return the budget gets pressure-tested before you sign anything, bids get compared line by line, and the work gets checked against the drawings while mistakes are still cheap to fix.
What We Handle
Pre-construction budgeting and realistic cost planning
Bid solicitation, review, and contractor selection
Scheduling and milestone tracking from groundbreaking to punch list
Permit coordination with Portland Permitting & Development
On-site quality control and change-order review
How Construction Management Fees Work
Construction management is billed one of two ways: a percentage of construction cost or a flat fee. Percentage fees for residential work commonly run mid-single digits to low teens depending on the project's size and complexity, and they scale as scope grows. Flat fees fit well-defined scopes and limited engagements: bid review, contract negotiation, or a one-time assessment of a troubled project.
You get our recommendation in writing before any work begins. Whether you need full owner's representation from design through closeout or a construction consultant in Portland for a few key decisions, you'll know exactly what our involvement costs and what you get for it.
Thirty Years of Design-Build Experience on Your Side
What separates Z Squared from a project-management firm is that Deb has spent 30 years actually building: estimating, scheduling, and standing on job sites, not reading reports about them. She's licensed in both Oregon and Washington, and she's worked through the permits, inspections, and older housing stock that make Portland-area residential construction its own discipline. When she reviews a bid or walks a framing inspection, she knows what good work looks like and what it should cost.
That experience cuts both ways. Because we also build as a design-build contractor, we speak the builder's language and respect the trades, so oversight stays collaborative instead of adversarial. And if one firm designing and building would serve you better, our new construction and remodeling services may be the right fit. We'll tell you so honestly.
Construction Management FAQs
Common questions answered
What does a construction manager do on a residential project?
+
A construction manager acts as the owner's advocate, handling budgeting, bid review, contractor selection, scheduling, permit coordination, and quality control from planning through closeout. They don't perform the construction; they verify the people who do are on schedule, on budget, and building to the drawings. On a residential project, that means someone experienced checks every invoice, change order, and inspection for you.
What is the difference between construction management and general contracting?
+
A general contractor builds the project and carries the construction risk. A construction manager represents you and oversees the builder's work for a transparent fee. The GC's profit comes out of your construction budget; the CM's fee sits outside it, so their only job is protecting your interests. Many owners use both: a GC to build, a CM to keep the budget, schedule, and quality honest.
How much does construction management cost?
+
Residential construction management is usually billed as a percentage of construction cost, commonly mid-single digits to low teens depending on project size and complexity, or as a flat fee for a well-defined scope. Smaller engagements like bid review or contract negotiation can often be done for a fixed price. You get the fee structure in writing before any work begins, so there are no surprises.
What is an owner's representative and when do I need one?
+
An owner's representative is a construction professional hired to stand in for you on a project: reviewing bids, negotiating contracts, tracking the schedule, and inspecting the work the way you would with 30 years of experience behind you. Hire one when the project is too large or technical to oversee alone, when you live out of the area, or when a job has gone sideways and needs independent eyes.
When should I hire a construction manager instead of just a GC?
+
Hire a construction manager when you want owner-side oversight in addition to, or before selecting, a general contractor. It pays off most on custom homes with an architect already on board, big remodels of older Portland houses where surprises are likely, projects you can't supervise in person, and any budget large enough that one bad bid would cost more than the CM fee. For a straightforward project with a contractor you trust, a GC alone may be all you need.
Put an Advocate on Your Side of the Table
Planning a custom home, rescuing a stalled remodel, or managing Portland property from out of state? A short call with Deb will tell you what oversight your project actually needs, and whether you need us at all. No pressure, no obligation.
WHAT OUR CLIENTS ARE SAYING
DON'T JUST TAKE OUR WORD
Tamar Feinkind
Home Owner
I worked with Deb Zsarko twice, first to renovate a 1 bedroom condo – kitchen, flooring, and paint – and the second time to completely gut a 1500 sq ft house. Five years on, we feel lucky to have worked with Deb to redo our 1940 house. The work she does lasts, and she considered things in terms of aesthetics that we had never thought of. She works with top of the line people, as well. Mostly, she's a person of her word! And that's rare in this business.
Mae-Fay Koenig
Home Owner
Deb did an incredible job with our master bathroom and walk in closet remodel! She's pretty accurate with her estimates and timeline which is a rare thing to find. Deb has a wealth of knowledge and experience with all things related to home construction and remodels. If she was still local to us, we would have had her tackle our kitchen remodel as well. Highly recommend Deb to anyone who wants a stress free remodel!