The main difference between design-build and a traditional builder is who holds the contract for design and when you learn what the house will cost. With a traditional builder, you hire a designer or architect first, finish the drawings, then ask builders to price them. With design-build, one firm handles design and construction, so the plan is priced and checked for buildability while it’s still being drawn.

Neither is automatically better. Here’s how each one works, what it’s good at, and how to tell which fits your land and your project.

How the traditional path works (design-bid-build)

In the traditional model, often called design-bid-build, design and construction are separate jobs with separate contracts.

1. You hire a residential designer or architect.
2. They develop the plan and construction drawings with you.
3. You send the finished drawings to one or more builders for bids.
4. You choose a builder and sign a construction contract.
5. The builder builds from the drawings, and the designer may stay involved to answer questions.

What it does well: You get a designer who works only for you, and several builders pricing the same set of drawings, which makes bids easier to compare.

The tradeoffs: You don’t get a firm construction price until the drawings are done. If bids come in over budget, the plan goes back for redesign, which costs time and design fees. During construction, if the drawings and the field conditions don’t match, you’re often the one coordinating between the designer and the builder.

How design-build works

In design-build, one firm is responsible for both design and construction.

1. You meet with the firm to talk through your land, goals, and budget.
2. The firm’s design team develops the plan with input from the people who will price and build it.
3. Cost is estimated and refined as design decisions are made.
4. You sign a construction contract once the design and price are set.
5. The same firm builds the home and handles questions between design and construction internally.

What it does well: You get cost feedback during design, not after it. Buildability questions (framing, mechanical layout, site constraints) get answered by people who build for a living. And when something needs to be resolved, one company is responsible for resolving it.

The tradeoffs: You usually won’t have several builders bidding the same final drawings, so transparency matters more. Ask how pricing is built, which contract type is used, and what the allowances cover.

Side-by-side comparison

Do you need an architect to design a custom home in Oregon?

Usually not. Under Oregon’s architect licensing law (ORS 671.030), someone who isn’t an architect can prepare drawings for a single-family home and its related structures, such as a garage, barn, or shop. That’s why many custom homes in Oregon are drawn by residential designers and CAD teams rather than architects.

Two things still apply:

• The title is protected. Only a registered architect can call themselves an architect or describe their work as architecture. If a builder advertises architectural services, ask who the registered architect is and what they’re responsible for on your project.
• Engineering may still be required. Depending on the design and the site, parts of a home may need a licensed engineer. Ask any builder who coordinates engineering and how it’s included in the price.

A middle option: bringing a builder in early

Some homeowners hire their own designer but choose a builder early, before the drawings are finished, so the builder can give cost and buildability input during design. This keeps an independent designer while reducing the risk of a plan that bids over budget. If you go this way, agree in writing on what the builder’s preconstruction input includes and whether it’s paid separately.

Which model fits your land?

Start with your situation rather than the label.

• You already have plans, or a designer you want to keep: a traditional builder, or the middle option above, lets you keep that relationship.
• Your lot has open questions (slope, rock, septic and well, a long access drive): design-build or early builder involvement helps, because site costs get priced while the plan can still adapt.
• You’d like to start from a proven plan and adjust it: a design-build firm with its own plan library gives you a head start on both design and pricing.
• You’re building from out of the area: fewer parties to coordinate usually means fewer calls for you to manage.

Questions to ask about the delivery model

These questions are specific to how design and construction are connected. For the broader checklist (licensing, references, warranty, red flags), see our guide to how to choose a custom home builder.

• Is design a separate agreement from construction, and what happens to the design fee if we build with you?
• Who owns the drawings, and can I take them to another builder if we don’t move forward?
• When will I get a construction price, and how firm is it at each stage?
• What contract type do you use? (Our guide to how builder fee structures work explains cost-plus, fixed price, and guaranteed maximum price.)
• Who coordinates engineering, energy code requirements, and permitting?
• If the drawings and field conditions don’t match, who resolves it, and how is any cost handled?

How design-build works at Select Design & Build

Select is a design-build firm based in Bend and part of the Pahlisch Homes family of brands. Design, CAD, purchasing, and construction management work under one roof, following an 8-step process: Discovery, Reservation & Design, Contract Signing, Finish Selections, Groundbreaking, Builder Walkthrough, Pre-Closing Assessment, and Welcome Home.

Design happens before the construction contract is signed. Most homes start from one of our proven floor plans and change through one of three plan design tiers: Focused for minor modifications, Tailored for structural changes to up to 50% of the design, and Innovative for changes up to a full transformation of the plan. You’ll review 3D renderings or a digital walkthrough before groundbreaking, and our purchasing team prices materials and trades with the buying scale of the Pahlisch Homes family of brands.

What to do next

1. Decide whether you want to keep an independent designer or have one firm handle design and construction.
2. Gather what you know about your lot: address or parcel number, whether it’s inside Bend city limits or in Deschutes County, and any known site conditions.
3. Bring the delivery-model questions above to each builder you meet.

If design-build sounds like a fit, request a complimentary design consultation and we’ll walk through your land, the plan tiers, and realistic cost and timeline ranges early.

Frequently asked questions

What is the difference between design-build and design-bid-build?

In design-bid-build, you hire a designer to finish the drawings, then have builders bid on them, with separate contracts for design and construction. In design-build, one firm handles both, so cost and buildability are worked out during design rather than after it.

Is design-build more expensive than a traditional builder?

Not inherently. Traditional bidding lets several builders compete on the same drawings, while design-build gives you cost feedback during design, which can prevent a plan that prices over budget. The final cost depends far more on the lot, the plan, and the finishes than on the delivery model.

Do I need an architect to build a custom home in Oregon?

Usually not. Oregon law allows people who aren’t architects to prepare drawings for single-family homes and related structures like garages and shops. Only registered architects can use the title “architect,” and some designs or sites may still require a licensed engineer.

This article is general information, not financial, legal, or tax advice. Costs and requirements vary by lot, jurisdiction, and project; talk with the appropriate professional and confirm current rules with your local building department.

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