What a Complete Custom Home Bid Should Include

A bid can be accurate line by line and still leave out the thing that ends up costing you. The framing lumber is priced right, the window package matches the quote, and the math adds up. Then the excavator hits rock in week two, and nothing in the bid says who pays for it.

The bids that caused real trouble were rarely wrong. They were incomplete. Below is what a complete bid spells out, and what the vague version of each item tends to look like.

Scope

Drawing set and date. A complete bid names the exact set it was priced from, something like "architectural set dated March 4, structural set dated March 11." A vague bid says "per plans," which doesn't help much once the plans have been revised three times.

Scope against the drawings. Every room, every level, and every structure on the drawings should appear somewhere in the bid, including the detached garage, the covered deck, and the basement. If the bid is silent on something that's on the plans, treat it as a conversation you'll have later, at a worse time.

Finish level. Complete means the bid points to a specification or finish schedule that defines tile, cabinet construction, trim, plumbing fixtures, and so on. "Finishes per plans" is vague, because drawings often don't describe finishes in enough detail to price them, which leaves the builder to pick a level and you to find out which one later.

Site and utilities

Site work. Excavation, grading, rock, retaining walls, and drainage should each be addressed, with the assumptions written down. A complete version reads like "assumes excavation without blasting or rock hammering; rock removal billed at the stated hourly equipment rate." A vague version is one line called "site work" with no assumptions at all. On mountain lots this is where a lot of money hides, because nobody knows what's under the dirt until the dirt is gone.

Utility connections. Water, sewer or septic, gas, electric, and communications should be priced from the source to the house. A line like "utilities to 5 feet from foundation" leaves the rest of the trench unpriced, and on a lot with a long driveway that can be most of the trench.

Permit, tap, and impact fees. These are set by the jurisdiction and the utility providers, and in mountain towns they can be substantial. Complete means each fee is listed with an amount, or with a clear statement that you're paying it directly. Vague means they aren't mentioned, and you find out at permit time.

Money

Allowances. Each allowance needs a dollar amount and a description of what that amount buys. For example (numbers illustrative): "Lighting fixtures, $18,000: decorative fixtures at entry, dining, and kitchen island; standard recessed cans elsewhere." It should also state what markup applies if you go over. An allowance with a number and no description is easy to set low and hard to hold anyone to.

Builder fee or markup. A complete bid states the percentage or fixed fee and exactly what it applies to: subcontractor costs, materials, allowances, general conditions, change orders. A vague bid gives you a total and leaves you to guess whether the fee is built into the line items, added on top, or both.

Contingency. Complete means the amount is stated, along with what it's for, who controls it, and what happens to whatever is left at the end. A contingency that's "included" with no amount and no rules for spending it works a lot like extra margin.

Payment schedule. A complete schedule ties each payment to completed work: foundation poured, framing inspection passed, drywall hung. A vague schedule ties payments to calendar dates or front-loads them, which can leave you ahead of the work on money and behind it on leverage.

Change order process. The bid or contract should say how changes are requested, how they're priced, what markup applies, and that they're approved in writing before the work happens. "Changes billed at cost plus" with nothing else is vague, and it's how a project ends up with a long list of small surprises on the final invoice.

Time

Schedule. A complete bid gives a construction duration, a start condition (permit issued, financing closed, site accessible), and a list of what can move the schedule: weather, permit delays, late selections, long lead times on materials. A vague one gives a completion month and nothing about what happens if it slips.

Winter conditions. If the build runs through a mountain winter, someone pays for snow removal, temporary heat, ground thaw, and protecting work already in place. Complete means these are carried as named line items with stated assumptions, such as how many months of temporary heat are included. Vague means they aren't mentioned. A spring start doesn't get you out of this, since a custom home can easily run long enough to see the next winter.

What's left out

Exclusions. A complete bid lists everything excluded in one place, so you can read it in a few minutes and know what isn't covered. A vague one scatters exclusions through line-item notes and footers, where they're easy to miss until they matter.

Warranty. Complete means the terms are written out: what's covered, for how long, how you make a claim, and how manufacturer warranties pass through to you. "Standard warranty applies" is only useful if you know whose standard.

This matters most when you're comparing bids. Two numbers side by side look like a price comparison, but if one bid carries site work assumptions, winter conditions, and realistic allowances and the other doesn't, you're comparing two different projects. The lower bid isn't always the cheaper house.

None of this is legal advice, and your contract deserves a review by an attorney. But reading a bid for completeness before you sign is something you can do yourself, and it's a lot cheaper than finding the gaps during construction.