Design-build vs. design-bid-build for a dental office

Most dentists pick a delivery method by accident. A friend used a design-build firm, or the landlord recommended a contractor, or the equipment dealer drew a floor plan and introduced a builder. Then the method decides who prices your project, who works for whom, and how much leverage you have when the number comes in high. It is worth choosing on purpose.

How does each delivery method work?

A delivery method is the contract structure that connects you, the designer and the builder. There are three you will meet on a dental office project. The Design-Build Institute of America says the defining feature of design-build is a single contract for both design and construction [1]. The traditional alternative, design-bid-build, splits design and construction into separate contracts, and it is the approach the AIA describes its most commonly used contract family as suited to it [2].

On a small dental suite, CMAR often looks like a hybrid: you hire your own architect, and you bring one contractor in early to price the design as it develops. The AIA publishes agreements for each of these paths, including an owner-contractor form for a cost-plus-fee contract with a GMP (A102-2017) and an owner and construction-manager-as-constructor form (A133-2019) [2].

One wrinkle is specific to leased space. Your lease work letter may say who can build in the suite, require landlord approval of your contractor, or have the landlord's contractor do part of the work. Read it before you pick a method. The dental office real estate guide and how TI allowances work cover what to look for.

What are the pros and cons for a dental project?

Neither method is better in general. Each one moves risk and control to a different place. Here is how that plays out on a dental office, where plumbing, vacuum and compressed air, medical gas, electrical and data all have to land in the right spot in every operatory.

Dental-specific experience matters with either method. A builder who has not set a dental chair rough-in, routed vacuum lines or coordinated with an equipment dealer's installation drawings will learn on your job. Equipment is usually bought separately from the dealer, so the contractor's scope and the dealer's scope have to meet without a gap. If your dealer offered a free floor plan, read what a free dealer design really costs before you hand it to a builder.

Which is faster?

Design-build is usually faster, for one reason: overlap. In design-bid-build, the steps run in a line. The architect finishes the drawings, contractors bid, you pick one, and construction starts. In design-build, the builder can order long-lead items, start permitting and line up trades while design is still being finished.

That speed is real but conditional. On a tenant build-out, permit review, landlord approvals and equipment lead times often set the critical path more than the delivery method does. Overlap also cuts both ways: if you start building before decisions are final, every late change costs more. If your lease has a hard rent start date, ask each firm for a written schedule that shows permit submission, permit approval and substantial completion, and ask what happens to the date if you change something.

Which costs less?

There is no honest universal answer, and I would be wary of anyone who gives you a percentage. What differs is how the price is discovered.

In design-bid-build, price discovery happens once, at bid time, on a complete scope. Competition is the check. The risk is that the first time you learn the real number is after you have paid for complete drawings. In design-build, price discovery happens gradually. The builder gives you a target early and refines it as the design develops. The check has to come from somewhere else: an open-book cost breakdown, a fee and general conditions you competed before you signed, or an independent review of the line items.

The delivery method is rarely the biggest cost lever. Scope and finish level are. The Alithos estimator assumes construction at $170 per square foot for leased space at standard finish and $220 at premium finish. On a 4-operatory suite, the model assumes 500 sq ft per operatory, or 2,000 sq ft. That makes construction about $340,000 at standard and $440,000 at premium, a $100,000 gap before anyone bids. This is planning math, not a quote.

For context, a 2026 dental lawyer's guide gives $150 to $350 per square foot for a leasehold build-out and often $400 or more for ground-up construction [4]. The model's lease rates sit inside that range. Its ground-up rates ($340 standard, $420 premium) are on the conservative side of published ranges, and your market may run higher. For a broader view of the full budget, see the dental office build-out cost guide and construction cost per square foot, or run the estimator with your own operatory count.

How do you compare contractor bids?

Two bids are only comparable if they price the same thing. The total at the bottom tells you almost nothing until you know what sits above it. Before bids go out, give every contractor the same drawings, the same scope sheet and the same bid form, so the answers come back in the same shape. The AIA's Instructions to Bidders (A701) and Contractor's Qualification Statement (A305) are examples of standard forms for that step [2].

When the bids come back, check each one against this list:

• Same scope sheet. Every bidder priced the same drawing set and revision date.
• Exclusions. What each bid leaves out: permits, demolition, low-voltage cabling, signage, fire sprinkler changes, landlord-required work.
• Allowances. Placeholder amounts for items not yet selected. A low allowance makes a bid look cheap until the real selection arrives.
• Alternates. Priced add or deduct options, so you can trim scope without rebidding.
• General conditions. Supervision, temporary facilities, cleanup and insurance carried as overhead. Compare the amount and what it covers.
• Fee. The contractor's overhead and profit, and whether it also applies to change orders.
• Schedule. Duration, start date and what the bidder assumes about permits and equipment delivery.
• Insurance and bonds. General liability, workers' compensation and, if your lender or landlord requires them, performance and payment bonds.
• License. An active license in your state, in the right classification, under the same name as the bid.

Then line them up side by side. Where one bidder is far below the others on a line, that is a question, not a win: it often means a missed scope item that will come back as a change order. This independent quote review is part of the Project Navigator: I check contractor and dealer quotes against the budget and against each other. I don't negotiate on your behalf, and I don't pick the winner. You and your attorney sign the contract.

Not sure what usually goes missing? The costs nobody bids walks through the common gaps.

What goes in the construction contract?

Most construction contracts in the U.S. start from a standard form and then get modified. The AIA's conventional family is the most common example. Its core pieces are the owner-contractor agreement (A101-2017 for a stipulated, or fixed, sum) and the General Conditions of the Contract for Construction (A201-2017), which the agreement incorporates [2]. A201 sets out the parties' rights and duties, including how changes in the work are priced and approved. For design-build, the AIA publishes a separate owner and design-builder agreement (A141) [2].

Whatever form you start from, these are the points a dental owner should see in writing:

• Price type. Fixed sum, cost plus fee with a GMP, or cost plus fee without a cap.
• Scope documents. The exact drawings, specifications and revision dates the price covers.
• Schedule and completion. Start, substantial completion and what happens if either slips.
• Payment terms and retainage. How progress payments are approved and how much is held back until completion.
• Change order process. Who can request a change, how it is priced and who must sign before work starts.
• Equipment coordination. Who installs what, and who is responsible for rough-ins matching the dealer's drawings.
• Warranty and closeout. Punch list, warranty period and the documents you receive at the end.

How do you check a contractor's license?

Licensing is set state by state, so the lookup depends on where the office is. Most states run a public search through the contractor licensing board or the department that oversees licensed trades. In California, the Contractors State License Board's Check a License tool lets you search by license number, business name or the name of a person on the license, and shows complaint disclosure [3].

Whatever state you're in, confirm four things:

1. The license is active. Check status, expiration and any disciplinary history.
2. The classification fits the work. A general building license is different from a single trade license.
3. The name matches. The business on the license should be the business on the bid and the contract.
4. Insurance is current. Ask for certificates of insurance for general liability and workers' compensation, and confirm the bond your lender or landlord requires.

Then ask for two or three recent dental or medical projects you can visit or call about. A healthcare build-out is a fair test of whether the team can handle the plumbing, vacuum, medical gas and inspection steps a dental office needs.

How should change orders be handled?

A change order is a written change to the contract's scope, price or schedule. Some are legitimate: a hidden condition behind a wall, a code requirement the inspector adds, a choice you change your mind about. The problem is not that change orders happen. It is approving them without knowing the cost.

The rule I use is simple: no work on a change until it has a written price and a written schedule impact, and you have signed it. Verbal approvals in the field are how a budget drifts. On the model's $340,000 construction line, every 1% of drift is $3,400.

A few habits help:

• Carry an owner's contingency in the budget and decide in advance who can spend it.
• Ask how the fee and markup apply to changes, and get it in the contract.
• Keep a running log of every change order, approved or pending, against the original budget.
• Compare each change against the bid set. If it was in the drawings, it should not be extra.

Change-order review is one of the things the Project Navigator covers, along with budget tracking through opening.

Where does an independent planner fit?

Every firm on a construction project has a role and a fee. The architect designs. The contractor or design-builder builds. The dealer sells equipment. The lender finances. None of them is paid to tell you the whole project costs more than you can carry.

That is the gap I fill. I'm an independent, flat-fee budget planner, paid by the client alone, with no commissions from contractors, dealers or lenders. I am not a contractor or an architect, and I don't direct construction or supervise the site. What I do is set the number before design starts, so every firm prices against a budget instead of writing one:

• Feasibility Check, $2,500 flat. A go or no-go financial screen. It credits toward the Budget Plan.
• The Budget Plan, $7,500-$10,000 flat fee. Space requirements, a line-item space and equipment budget, build vs. lease vs. condo projections and a lender-ready package. The exact fee and scope are set in writing before work starts.
• Project Navigator, from $20,000, quoted per project. The Budget Plan plus owner-side advisory through opening: independent quote review, floor plan and design review against the budget, lender negotiation support and change-order review. Availability depends on your project's state and is confirmed before engagement.

If you're still choosing between going it alone, a dealer program and an independent planner, the planning options compared guide lays them out. For ground-up projects, start with building a dental office. Definitions for GMP, allowances and general conditions are in the glossary.

Frequently asked questions

Is design-build cheaper for a dental office?

Not automatically. Design-build can save time, and time has a cost when you are paying rent before you open. But the same firm scopes and prices the work, so you lose the competitive check that bidding gives. Whether it ends up cheaper depends on how the fee and price are set and whether someone checks the line items.

How many contractor bids should I get?

Enough to see real competition on the same scope. I would rather see three comparable bids on one drawing set than five bids that each priced something different. Invite only contractors you would actually hire, and give each one the same drawings and bid form.

Should my contractor have dental experience?

It helps a great deal. Dental offices need plumbing, vacuum and compressed air, medical gas, electrical and data in exact locations in every operatory, coordinated with the equipment dealer's installation drawings. Ask for recent dental or medical projects and call those owners.

What is a GMP contract?

A guaranteed maximum price contract pays the contractor the cost of the work plus a fee, up to a ceiling. Costs above the ceiling are generally the contractor's responsibility unless the scope changes. What happens to savings below the ceiling depends on the contract. The AIA A102-2017 and A133-2019 are standard examples.

How do I check a contractor's license?

Use your state's contractor licensing board lookup. In California, that is the CSLB Check a License tool. Confirm the license is active, the classification fits the work and the name matches the bid. Then ask for current certificates of insurance.

Who should hold the architect's contract?

In design-bid-build and construction manager at risk, you hold it, so the architect works for you. In design-build, the architect usually works under the design-builder. If you want an independent design voice on a design-build project, you can hire your own architect separately to review the design. Your attorney can advise on the structure.

Sources

1. Design-Build Institute of America (DBIA), "What is Design-Build?" (accessed 2026). dbia.org/what-is-design-build
2. AIA Contract Documents, "Conventional (A201) Family" (accessed 2026). learn.aiacontracts.com
3. California Contractors State License Board (CSLB), "Check a License" (accessed 2026). cslb.ca.gov
4. Dental & Medical Counsel (A. Oromchian), "A Dental Lawyer's Guide to Your Dental Office Build-Out" (2026). dmcounsel.com
5. Alithos Advisory, cost estimator and benchmark model (2026). alithos.co/#benchmark