Category: Process & Timeline

By Bryce Swager, owner of SwagerBuilds

This is the single most important question an owner can ask a custom home builder, and it’s the one almost nobody asks. Two contract structures dominate luxury custom home construction. They look superficially similar on the title page. They are radically different in who carries the risk when the build does not go to plan.

The short answer

Cost-plus shifts cost overruns onto the owner. The owner pays for labor, materials, and a builder fee or markup on top. If the build runs over, the owner pays.

Fixed-price shifts cost overruns onto the builder. Once design and selections are locked, the builder commits to a number. If the build runs over, the builder eats it.

Most luxury builders in Teton Valley and Jackson Hole run cost-plus. I run fixed-price. Here is why, what makes it work, and what to watch for in either contract.

How cost-plus actually works

A cost-plus contract typically reads: “Owner agrees to pay all costs of construction (labor, materials, subcontractors, permits, equipment) plus a builder fee of [X%] OR a fixed builder fee of [$Y].”

That sounds reasonable. The builder makes their money on a transparent margin. The owner sees every cost. But here is what happens in practice:

• The estimate the owner signs is not a price. It is a forecast. The actual price will reveal itself month by month.
• Every cost increase is the owner’s cost increase. Lumber goes up 12% mid-build? The owner pays. Subcontractor over-quotes by 30%? The owner pays.
• The builder has limited financial incentive to control cost. On a percentage-fee structure, every cost overrun increases the builder’s fee.
• The “soft close” is rare. The builder does not finish under the estimate. They finish over. Almost always.

I have seen cost-plus builds in Teton Valley land 15-30% over the original estimate. That is $300K–$1.5M on a $2M-$5M build. Owners discover this in month 10, when the project is too far along to switch builders.

How fixed-price actually works

A fixed-price contract reads: “Builder agrees to construct the home as specified for [$Z], inclusive of all labor, materials, subcontractors, and fees.”

That number does not move unless one of three things happens:

1. The owner signs a change order. Adding a third stall to the garage, swapping the kitchen package, adding a basement bar. These trigger documented change orders, each priced and signed before any work moves.
2. Selections come in over allowance. The contract includes allowance lines. If the owner picks finishes over those allowances, the difference is documented in writing.
3. Force majeure or scope-condition changes. Bedrock found at 4 feet where the geotech showed 12. A site condition nobody could have predicted. Even these get documented before work moves.

The number we sign on Day 1 is the number you pay at the end, plus or minus owner-driven changes you signed for.

Why builders avoid fixed-price contracts

Most luxury builders avoid fixed-price for three reasons. Two of them are legitimate, one of them is the real one.

Legitimate reason 1: Pre-construction has to be real

Fixed-price only works if design is locked, selections are signed, and the scope is documented in writing before the contract is executed. That means a real pre-construction phase — 4 to 6 months of design, allowance lockdown, site feasibility, structural engineering, and selections workshops.

Legitimate reason 2: Volatile material markets

2021-2023 taught the industry that material prices can move 30% in 90 days. Builders got burned on fixed-price contracts when lumber and steel spiked. Even fixed-price contracts now include price-escalation clauses for specific volatile categories.

The real reason: Risk transfer

Cost-plus is easier for the builder. Period. Every problem becomes the owner’s problem. There is no scenario in which the builder takes a financial hit for poor estimation, poor scheduling, or poor scope control. Most builders prefer that arrangement.

What makes fixed-price actually work at SwagerBuilds

I run fixed-price because the systems I run make it possible:

• 4-6 month pre-construction phase. Design locked. Stamped engineering. Site geotech. Selections workshops. Allowances signed. Trade pricing locked.
• JobTread cost tracking. Every line item, every PO, every subcontractor agreement tracked in real time.
• Trade relationships with locked pricing. My subs price my jobs based on history. They know what I will pay and what I will not.
• Written change order policy. No work moves without a signed change order. This is the single biggest source of cost drift, and it is killed at the source.
• Selections discipline. Allowances are real numbers, not optimistic placeholders.
• A real bench of trades. If a subcontractor flakes, I have backup priced. Risk does not cascade.

The hybrid: GMP contracts

Some builders offer a Guaranteed Maximum Price (GMP) contract. It looks like cost-plus on paper but the builder caps total cost at a ceiling. Beyond the ceiling, the builder eats the overage.

GMP is better than pure cost-plus but worse than fixed-price for two reasons. First, the ceiling is typically set 10-15% above the estimate, which functionally makes the estimate meaningless. Second, the builder has incentive to spend up to the ceiling, so most GMP builds finish near the cap.

I do not sign GMP contracts. The systems I run make a real fixed-price contract possible and I prefer the cleaner deal.

How to read a contract for the trick clauses

• “Estimate” vs “Price.” If the document says “estimate” anywhere in the financial sections, it is functionally cost-plus regardless of the label.
• Vague allowance language. “Standard fixture allowance” with no dollar amount is a trap.
• Open-ended overhead and profit clauses. “Plus standard overhead and profit” without a cap is a blank check.
• Soft change-order provisions. “Builder may make modifications as needed” is a back door to cost-plus.
• Limited damages for overruns. If the builder’s liability for an overrun is capped at $1,000, the contract is fixed-price in name only.

Questions to ask the builder, in writing, before signing anything

1. Is this a cost-plus, fixed-price, or GMP contract?
2. What pre-construction work needs to complete before you commit to the contract price?
3. What is your written change order policy? Can I see the template?
4. If a subcontractor over-quotes, who pays?
5. What is your typical variance between original contract price and final billed price?
6. Can I talk to two owners on cost-plus and two on fixed-price?

A builder who answers all six in writing, fast, is the builder you want. A builder who hedges on any of them is the builder you walk away from.

Want a fixed-price contract for your custom build?

30-minute planning call. I will walk you through how the SwagerBuilds fixed-price structure actually works, against your specific lot and vision.

Book a Planning Call →

SwagerBuilds LLC · 4510 E 168 N, Rigby, ID 83442 · (208) 520-0636

By Bryce Swager, owner of SwagerBuilds

I get the call about every other week. An owner is two months into shopping for a Teton Valley custom home builder, and they have a list of names but no way to compare them. They are asking the wrong questions because nobody told them what the right ones are.

Here are the twelve I would ask if I were the one writing the check. The first six filter out builders who cannot operate. The next six filter out the ones who can operate but will not commit. Both filters matter.

1. Do you offer fixed-price contracts, or only cost-plus?

This is the single most important question and the one most owners do not know to ask. Cost-plus contracts (where the owner pays for labor, materials, and a builder fee on top) shift every overrun onto the owner. Fixed-price contracts (where the builder commits to a number once design is locked) shift overruns onto the builder.

Most luxury builders in Teton Valley run cost-plus. It is the easier contract structure for the builder. SwagerBuilds runs fixed-price, every project. Once design is locked and selections are signed, the number we agreed on is the number you pay.

What you want to hear: “We sign a fixed-price contract once design and selections are complete.”

Red flag: “Cost-plus is the only way to handle a custom build.” It is not. It is the way that protects the builder.

2. How do you handle change orders?

The biggest source of cost drift on a custom build is verbal change orders. The owner walks the site, asks about moving a window, the framer says “yeah, no problem,” and three weeks later there is a $12,000 line item nobody remembers approving.

The right answer involves three components: written change orders before any work moves, owner signature required before pricing is locked, and no PO released without a signed change order on file.

What you want to hear: “Nothing moves until you sign a written change order.”

Red flag: “We just handle it as we go and reconcile at the end.”

3. What construction management software do you use?

If the answer is “I have a notebook” or “we use email and a spreadsheet,” you are about to inherit somebody else’s chaos. Real builders run on real software. The current standard for custom builders is JobTread, BuilderTrend, CoConstruct, or Procore. Owners get a dashboard with daily logs, budget tracking, schedule view, change orders, and selections.

SwagerBuilds runs every project on JobTread. JobTread published a case study about why I switched to their platform.

What you want to hear: “We use JobTread, BuilderTrend, or CoConstruct. You will have your own dashboard.”

Red flag: Anything that involves the word “spreadsheet” or “email thread.”

4. Will I get daily updates or weekly?

Most builders run on weekly updates at best. Some run on monthly. Some run on “I will get back to you next time we talk.” Daily updates change the math for an out-of-state owner. You see what got framed yesterday before the framer goes home today.

SwagerBuilds runs daily JobTread photo logs every weekday before I have finished my coffee. Plus 24/7 on-site cameras.

What you want to hear: “Daily photo logs from the site, plus a real schedule you can read.”

Red flag: “We will keep you posted.” That is not a system.

5. Can I see your last three builds, in person?

Photos lie. Renderings lie hardest. Walk three of a builder’s last three completed projects. Look at the trim profile transitions. Look at the door reveals. Look at where the tile meets the drywall return at the shower curb. The truth of a builder shows up at the boring intersections.

If the builder cannot get you in front of three recent owners, that is the answer. SwagerBuilds will introduce you directly to past owners — names are on the Reviews page and I will give you their phone numbers.

What you want to hear: “Here are three projects, here are three owners. Call them.”

Red flag: “We respect our clients’ privacy.” Which usually means there are not three recent owners willing to vouch.

6. What is your typical timeline from contract to move-in?

For a luxury custom home in Teton Valley in 2026, the honest answer is 14 to 22 months. Design and pre-construction takes 4 to 6 months. Permitting through Teton County and the local city takes 2 to 4 months. Construction itself runs 9 to 12 months.

If a builder tells you they can do it in 9 months total, they are either lying, building a stock plan, or planning to make up the difference by skipping things you do not want skipped.

What you want to hear: “14 to 22 months. Here is the breakdown.”

Red flag: Anything under 12 months for a true custom build.

7. Who am I going to be talking to during the build?

On big builder operations, owners hand the project off to a PM after the sales close. The PM might be excellent. The PM might also be on three other jobs and rotating supers weekly. The question matters because the answer tells you whether you bought what you paid for.

SwagerBuilds is owner-operator. Every owner has my phone number. I call back the same day.

What you want to hear: “You will have direct access to the owner or a dedicated PM assigned only to your job.”

Red flag: “Our project management team handles all client communication.” That means a rotating cast of supers nobody owns.

8. What does your workmanship warranty actually cover?

Idaho new-construction coverage is standard but limited. A real workmanship warranty layered on top covers the things that fail because the builder cut something — not the things that fail because the material aged.

SwagerBuilds backs every build with a 1-year workmanship warranty on top of standard Idaho coverage. We come back at 30 days, 6 months, and 1 year for follow-up walkthroughs. Things settle. We come back.

What you want to hear: “1 year minimum on workmanship, on top of statutory coverage. Here are the scheduled follow-up walkthroughs.”

Red flag: “Statutory coverage is what protects you.” It does — just not enough.

9. How do you handle the hard conversations?

Custom homes do not fall apart on the framing or the finish. They fall apart on the conversations the builder avoids — the change order nobody wanted to bring up, the schedule slip nobody wanted to admit, the design choice that needs to get pushed back on, the vendor that is underperforming.

I do not dodge any of those. I bring them up early, direct, and with the documentation already on the table. You will know how I handle hard conversations within the first two weeks of working with me.

What you want to hear: The builder talks about hard conversations like a feature, not a defect.

Red flag: “We are always positive on every project.” Optimism is not a process.

10. Who is NOT a fit for you?

Any builder who says “we work with everyone” is signaling they do not have a niche, do not have a price floor, and do not have boundaries. The right builder for a $3M Driggs build is the wrong builder for a $400K Rigby remodel. Builders who do not self-select are the ones who say yes to everything and then disappoint.

SwagerBuilds is not for owners shopping on price (under $1M custom-home budget), owners who do not want to use technology, or owners who plan to be on-site every day. We refer those owners to builders who fit them better.

What you want to hear: Specific descriptions of who the builder is not for.

Red flag: “We work with everyone.”

11. What is your real per-square-foot range right now in this town?

“It depends” is not an answer. It depends — but a builder who has been in the valley a year can give you a real range. A luxury Teton Valley build in 2026 runs $550 to $1,200 per square foot finished. Most SwagerBuilds builds in Driggs and Victor land $700 to $950 per square foot.

If a builder cannot give you a per-square-foot range against your finish level and lot type, they have not built enough recently to know.

What you want to hear: A real range, with the caveats attached.

Red flag: Either “I can’t say” or a single number with no range.

12. Are you a one-man-band or a real operation?

This question cuts both ways. A big operation has bench depth and trade leverage but loses the personal accountability. A one-man-band has accountability but cannot run more than two or three jobs at a time. There are good builders at both ends.

SwagerBuilds is owner-operator with a select crew, a Rigby millwork shop, and a structured pipeline. I support my family with this work alone. That means every job carries weight a corporate GC will never feel.

What you want to hear: A clear, honest description of the operation size and what trade-offs that brings.

Red flag: The answer pretends the trade-off does not exist.

How to use these questions

Send them, in writing, to every builder on your shortlist. Builders who answer fast and direct in writing are usually the ones who will run a fast, direct job. Builders who hedge in writing usually hedge in everything else too.

Twelve questions filter out most of the noise. The builder who passes all twelve is the one to call back.

Want SwagerBuilds’ answers to all 12 in a single planning call?

Book a 30-minute call. I will walk through all twelve, on the record, against your specific lot, timeline, and budget.

Book a Planning Call →

SwagerBuilds LLC · 4510 E 168 N, Rigby, ID 83442 · (208) 520-0636