For cost ranges by project tier — what a cosmetic, mid-range or structural Boise kitchen remodel actually costs — see kitchen remodel costs in Boise. For cabinetry pricing by tier, see the cabinet options guide. Neither is repeated here.
| Origin | What it looks like | Predictable? | The control |
|---|---|---|---|
| Discovered conditions | Failed subfloor under the dishwasher, undersized wiring, a drain that is not where it was assumed to be, water damage behind a sink base | No — this is genuinely unknown until things come apart | A contingency, held by you, sized to how much of the existing construction is unknown. |
| Selection drift | Tile chosen above the allowance, then fixtures, then lighting — each individually modest | Yes — every instance is a decision | Lock selections before demolition and convert allowances into real numbers. |
| Scope addition | “While you're here, could you also do the flooring / the pantry / the dining room?” | Yes — entirely a decision | Treat every addition as a separate priced decision with its own schedule impact. |
When a project is priced before every selection is made, the unmade selections are carried as allowances — a figure for tile, for plumbing fixtures, for lighting, sometimes for appliances. The mechanism is legitimate and often unavoidable. The failure happens when the allowance figure reflects a builder-grade selection and the homeowner is shopping at a level well above it.
The result is not a single dramatic overrun. It is a sequence of small ones: a tile upgrade, a nicer faucet, better cabinet hardware, upgraded lighting. Each is modest and each is defensible. Together they are how a budget moves without anyone making a decision that felt significant at the time.
Handling allowances properly
Ask what each allowance buys
- Ask to be shown a specific product at the allowance figure, not a range
- Confirm whether the allowance covers material only or material and labour
- Check whether installation complexity changes with the selection
An allowance that covers material only will overrun if the upgraded selection is also harder to install.
Convert allowances into selections early
- You have time before demolition to visit showrooms
- Lead times on the item could affect the schedule
- The category is one where you know you have strong preferences
Selections made under schedule pressure are almost always more expensive than the same selections made calmly.
| Order | Decision | Why it must come here |
|---|---|---|
| 1 | Structural question — is a wall coming out? | It changes the shape of the room, so every subsequent decision depends on it. |
| 2 | Layout and fixture positions | Determines plumbing, electrical and ventilation scope — the biggest cost forks. |
| 3 | Appliances | Appliance dimensions set cabinet openings. Choosing after cabinets means fillers, modifications or a re-order. |
| 4 | Cabinets | Longest lead item. Ordering early keeps the kitchen usable while you wait. |
| 5 | Countertop material | Selected now; templated later, after cabinets are installed and level. |
| 6 | Tile, fixtures, lighting, hardware | Lower lead times, but locking them now converts allowances into real figures. |
| 7 | Paint and finishes | Genuinely deferrable without cost consequence. |
The two most common sequence errors are choosing appliances after cabinets, and starting demolition before cabinets are ordered. The first causes re-work; the second converts the entire cabinet lead time into time without a kitchen. Our layout change cost guide covers step 2 in detail, since it carries the largest cost forks.
Mistakes that cost the most
1.Treating the contingency as part of the spending budget
It gets spent on upgrades in the first third of the project, leaving nothing when the actual discovery happens — which is the moment it existed for.
2.Comparing bids without comparing scopes
The lower bid is frequently the one that excluded more. Two numbers are only comparable when the inclusions and allowances behind them are.
3.Accepting allowances without seeing what they buy
An allowance is only meaningful when it is tied to a specific product at that price. Otherwise it is a placeholder that will move.
4.Selecting appliances after cabinets are ordered
Cabinet openings are built to appliance dimensions. Reversing the order means modifications, filler panels, or re-ordering boxes.
5.Adding scope mid-project without re-pricing the schedule
Additions look cheap because the crew is already on site, but they extend the programme and push every subsequent trade back.
6.Phasing the work to spread cost
Re-mobilising trades and undoing finished work usually costs more in total than doing it once. Phase by room, not by trade.
How much contingency should a kitchen remodel budget include?
Enough to absorb what the walls and floor turn out to contain, and the honest amount depends on how much of the existing construction is unknown. A kitchen where nothing structural changes and the home is recent carries less unknown than a 1950s Boise kitchen where the wall is about to be opened. The contingency is not padding and it is not the contractor's margin — it is a homeowner-held reserve for conditions that could not be seen at the time of pricing. The disciplined approach is to hold it separately, spend it only on discovered conditions rather than on upgrades, and treat anything left at the end as money saved rather than money available for a better faucet.
What is an allowance, and why does it matter?
An allowance is a placeholder amount in a contract for an item you have not yet selected — tile, fixtures, lighting, sometimes appliances. It lets a project be priced before every decision is made. It is also the single most common route by which a budget drifts, because an allowance set at a modest figure and then spent against a showroom selection produces a change order for the difference. Allowances are not dishonest, but they are only useful when the figure reflects the level of finish you actually intend. The way to remove the risk is to make selections early enough that allowances become real numbers before work starts.
Why do kitchen remodel budgets go over?
Overruns come from three sources, in roughly this order. Discovered conditions — what is found once cabinets, walls or flooring come off, which is why the contingency exists. Selection drift — allowances spent above the figure they were set at, usually a series of small upgrades rather than one large one. And scope addition — deciding mid-project to also do the flooring, or the adjacent dining room, or the range hood. Only the first is genuinely unpredictable. The other two are decisions, and they can be controlled by locking selections before demolition and by treating any scope addition as a separate, separately priced decision.
Should I get a fixed price or a cost-plus contract?
A fixed price transfers risk to the contractor and gives you budget certainty, provided the scope is genuinely defined. Cost-plus transfers risk to you and is more honest where the scope truly cannot be defined in advance. In practice, most residential kitchen work is best served by a fixed price with a clearly listed scope, a small number of well-set allowances, and a written change-order process. Whichever structure you use, the thing that protects you is specificity: a contract that lists what is included, what is excluded, and what happens when something is discovered is far more valuable than the pricing model on its front page.
When should I lock my selections?
Before demolition, and ideally before the contract is signed. Selections drive lead times, and lead times drive the schedule — cabinets in particular are usually the longest item. They also drive cost, because an unmade selection is an allowance and an allowance is an estimate. The practical sequence is: layout first, because it determines everything else; then cabinets and appliances together, since appliance dimensions set cabinet openings; then countertop; then tile, fixtures and lighting. Homeowners who complete this before work starts almost always finish closer to budget than those who select as they go.
Is it cheaper to do a kitchen in phases?
Usually no, and often materially more expensive. Phasing means mobilising trades more than once, repeating protection and clean-up, and frequently undoing finished work to reach something in the next phase — new flooring lifted to move a drain, fresh paint cut into for a later electrical change. Phasing makes sense when it is organised around genuinely separable systems rather than around budget timing: doing the kitchen this year and the bathroom next year is separable, whereas doing the cabinets this year and the countertop next year is not. Where cash flow is the constraint, financing the work as one project is usually cheaper than splitting it.
Each reference below is cited for a specific claim on this page. Codes, fees and product specifications change — confirm current requirements with the authority having jurisdiction before relying on them for a project decision.
- City of Boise — Residential Addition, Alteration & Accessory Building Submittal Checklist (#406)
Cited for: The permit and plan-review step that has to be budgeted for in schedule terms, and Boise's stated ~2 week online review.
- Idaho DOPL — Idaho Adopted Codes
Cited for: The code editions Idaho enforces, which determine what upgrade work may be triggered when a kitchen's systems are altered.
