How to Manage Allowances and Selections With a Custom Home Client

Updated November 2026

Set each selection's due date and the money rules for overages before the contract is signed, then record every decision with its price and bill each difference as it happens. Work the due dates back from when each item gets installed, and decide in writing what happens when a pick lands over or under its allowance. Leave either one open and the first real conversation about it happens after the tile is set.

Later costs real money. A client who picks shower tile a month after it was due can push the delivery past the tile setter's start date, and the $2,200 extra they chose is easy to lose between the showroom and the next draw. For a custom builder or remodeler running a handful of jobs at once, that's a lot of small numbers to keep straight by memory.

How much of a home's budget do client selections control?

On NAHB's average new home, five common allowance items add up to about three-quarters of what the builder makes on the house. In NAHB's Cost of Constructing a Home survey for 2024, those five came to $55,257, about 12.9% of construction cost by our arithmetic, against $72,971 of pre-tax builder profit, which was 11.0% of the sales price. Interior finishes, a stage that also covers drywall, insulation, trim and paint, were the largest of eight construction stages at 24.1% of construction cost.

Here are those five, all part of the interior finishes stage:

One caution on the source: NAHB's survey describes a typical new home, not a custom one, and it drew 41 usable builder responses. It's good for proportions. Price your own jobs from your own quotes.

And clients do spend past the plan, often on purpose. In the 2026 U.S. Houzz & Home Renovation Trends study of 10,176 homeowners who renovated in 2025, 37% spent more than they planned and 3% came in under. Asked why, 52% said products or services cost more than expected. But 35% said they chose more expensive products or materials than planned, and 31% changed the scope or design. Houzz runs those last answers under the heading "Budgets Knowingly Exceeded." Those are remodels, but the choices are the same ones a custom-home client makes at the tile showroom, and a knowing overspend is fine as long as someone bills it.

When should each selection be due?

Work backward from the day the item is needed on site. Take the install date (or the rough-in date, for anything that sets a valve, a box or a dimension), subtract the supplier's quoted lead time, subtract about a week to confirm and order, and that's the decide-by date. Subtract the time the client needs to choose and you have the date the options have to be in front of them. Both go on the build schedule next to the task they feed.

The arithmetic matters because building is the short part. Homes built by hired contractors, the larger share of custom home building, took about 11.7 months from permit to completion in 2025, according to NAHB's analysis of Census data. Choosing can take longer than that. Houzz's renovation study found kitchen projects averaged 9.5 months of planning and 5.8 months of construction, and primary baths 8.4 months against 4.8. A client who plans like that and starts choosing at groundbreak will still be choosing when the cabinets should be on a truck.

Every number in that table is ours, for illustration. Use your own schedule and the lead times your suppliers quote this month, and expect them to move.

Two things fall out of a table like this. Some choices are due at rough-in, months before anything is installed: the valve body behind the shower trim, the box locations for pendants, the appliance sizes the cabinet drawings depend on. And the window options usually go out before the first shovel, which is the order experienced builders already work in. "It's important to have as many decisions done as possible before there's a shovel in the ground," Jay Endelman, owner of Guild Craft, a design-build firm in Chevy Chase, Md., told Custom Builder in September 2025. In the same article, Richard Jackson of JacksonBuilt Custom Homes in Charleston, S.C., described choosing in build order, exterior first, and inside, "cabinets come first because they set the tone for everything else—appliances, tile, lighting."

Give the client the whole list with dates at the selections kickoff, before the contract is signed if you can. A date they agreed to in writing is much easier to hold than one you mention in week 15.

What should the contract say about allowances?

Four things, in writing: what the allowance amount includes, how overages and credits get billed, whether overages carry your overhead and profit, and what happens when a client misses a date. Each one you leave out turns into a conversation after the money is spent.

Start with what's in the number. AIA's A201 general conditions are written mostly for commercial work, but their allowance terms are the clearest model we know of to borrow. They treat an allowance as the cost of the materials delivered to the site plus taxes, less trade discounts. Labor, installation, overhead and profit sit in the contract sum outside the allowance. When the real cost comes in higher or lower, the contract sum moves by change order, and under §3.8.2 that change order covers both the material difference and any change in the contractor's own costs. AIA's own explainer gives the simple case: on a $10,000 flooring allowance, $12,000 of flooring raises the contract sum by $2,000, and $8,500 lowers it by $1,500.

The standard forms don't settle the process for you. "Most form contracts, including the AIA General Conditions, do not discuss the process for administering allowances or the consequences for failing to do it right," attorneys Randolph Ruff and Jonathan Mraunac wrote in a 2018 Ogletree Deakins white paper. It predates our usual two-year window for sources, and we use it anyway because A201-2017, the edition it analyzes, is still the current one. A201 itself asks only that the owner select allowance items "with reasonable promptness" (§3.8.3). Nobody can schedule a tile setter against reasonable promptness. Put the dates from your decide-by list into the contract or an exhibit to it.

Then write down the money rules:

• Whether overages carry your overhead and profit rate, and what the rate is. If they do, say whether credits come back at the same markup. Clients notice a rule that only runs one way.
• When the difference gets billed. We'd bill it as a change order within a week of the decision, while the client still remembers choosing it.
• A default selection for each allowance item, named in the spec, that you'll order if the client hasn't decided by the date. Or a clause that moves the schedule and says who pays for the delay. Pick one.
• Size each allowance from a current quote at the finish level the client has described. Lowballing allowances to win the bid just moves the argument to month seven.

That last point matters more when prices move. In NAHB's Remodeling Market Index for the second quarter of 2026, 74% of remodelers said suppliers had raised material prices since March. An allowance priced off last spring's quote can be short before the client picks anything. Price drift like that is one way a client's selections end up costing more than anyone expected.

Does an allowance include installation labor?

Not under AIA's A201 terms, which treat an allowance as materials delivered to the site. Labor and installation sit outside it, so a pick that changes the labor needs its own line on the change order.

The labor piece is the one builders lose. Say the contract carries a $4,000 tile allowance for the primary shower, and the client picks a large-format porcelain that costs $6,200. The material change order is easy, $2,200. But large-format tile often needs a flatter wall and an extra pair of hands to set, and your setter wants $1,400 more. Under A201-style wording that $1,400 is a change in your costs and belongs on the change order too. Under a contract that just says "tile allowance: $4,000," you're arguing about it in the driveway, and the setter's invoice arrives either way.

How do you keep selections straight once the job is running?

Keep one record per selection that holds the options offered, the one chosen, its price, the allowance, the difference, who decided and when. Send the change order for the difference as soon as the decision is made. A running total of "decided so far" that the client can see beats a stack of change orders they first notice at the last draw.

Clients ask for exactly this. In Houzz's 2026 renovation plans report, homeowners who finished a project in 2025 said they wanted better schedule tracking (44%), clearer communication (35%) and greater cost transparency (26%). And 22% of homeowners planning a 2026 project already expected design decisions to disrupt it, according to the full report.

Spending more is the client's call. "We've had clients spend thousands on change orders simply because that's how they approach decision-making," Jackson told Custom Builder. "At the end of the day, if it matters to them, it's their home and their investment." The builder's job is narrower than talking anyone out of the better tile. Every dollar of it should be on a signed change order before the tile shows up.

A few habits that hold up whatever you track it in:

• Price every option against its allowance before the client sees it.
• When a client decides on a site walk, write it down that day and send it back to them to confirm.
• Lock a selection once it's ordered. A change after that is a new change order with a restocking fee, if your supplier charges one.
• Review open selections at the weekly schedule meeting, sorted by decide-by date.

Our guide to change orders for home builders covers the paperwork side of billing the difference, and the draw schedule guide covers getting it paid.

How does Trade Agent track allowances and client selections?

Trade Agent is software for custom home builders and remodelers that keeps allowances and client selections on the same budget lines that hold the job's money, as the builders page shows. We make it, so weigh this section with that in mind.

Any estimate or budget line can be marked as an allowance, and attaching a client selection to a line marks it automatically. Each option you add shows how far it lands over or under the allowance before the client sees it. Paste a product link and Arti, the AI built into Trade Agent, fills in the name, photo, price and store for you to check before you add it.

In the client portal, each choice shows its options with photos and prices, plus the deadline. Clients can compare options side by side and ask you about them in a thread before they confirm. One project setting decides how much money they see: full prices, only the difference from the allowance, or none. Every decision is recorded with who made it, when, the price and the difference, and an earlier choice stays in the history when a client changes their mind. If a client tells you in person, you record it and the record shows you entered it.

Each selection can carry a decide-by date. Overdue and due-soon selections are flagged on your list, in the client's portal and in project alerts, and dated selections show on the schedule's look-ahead.

Run the shower tile through it. The $6,200 porcelain shows as $2,200 over its $4,000 allowance before the client sees it. The client confirms it in the portal, or you record the site-walk decision yourself. When it's time to bill, you pick the decided selections and Trade Agent drafts a change request that totals each pick's difference from its allowance, credits included, so the tile line carries the $2,200. The setter's $1,400 isn't part of the selection's difference, so you add that line yourself. The budget moves once the client approves the change order.

What it doesn't do yet. It sends no reminder emails as a deadline approaches, so chasing a late decision is still a call you make, with the overdue list telling you who to call. Selections aren't in the phone app. And nothing bills an overage on its own: you start the change request.

If you want to see your own selections list in it, book a demo.