Rehab Budgeting by Category: The 14 Lines That Keep a Flip Alive

A rehab budget fails in a predictable way: the total looks precise, but nobody can tell what it contains.

“Repairs: $45,000” is not a plan. It is a number waiting to be argued with by a roof, a sewer line, an electrical panel, and a contractor's change order.

Budget by category instead. Categories force you to define the scope, obtain comparable quotes, notice omissions, and see an overrun while there is still time to respond.

The 14 rehab budget lines

1. Kitchen

Cabinets, counters, sink, faucet, hardware, and kitchen-specific labor. Keep appliances separate if your quotes price them separately; otherwise, kitchen and appliance costs are easy to double-count or omit. Before setting the number, decide the finish level and measure the room. A cabinet quote without layout, box construction, counter material, and installation is not yet a usable budget input.

2. Bathrooms

Tubs, showers, tile, vanities, toilets, fixtures, mirrors, exhaust fans, and bathroom plumbing or electrical work that belongs to the room's scope. Bathrooms concentrate expensive trades in a small area. Water damage behind walls or under floors can also turn a cosmetic refresh into structural and plumbing work, which is why the inspection behind the finishes matters.

3. Roof

Roof repair or replacement, flashing, gutters where included in the roofing scope, and related decking repairs. Separate a limited repair from a full replacement. Also identify who pays if damaged decking is found after tear-off; that condition belongs in the quote or in contingency, not in a verbal assumption.

4. HVAC

Heating, cooling, ductwork, thermostat, permits for mechanical work, and any required correction to vents, returns, or condensate drainage. Get the system's age and operating condition into the inspection record. “It runs” is not the same as “it is likely to pass a buyer's inspection without a credit.”

5. Flooring

Floor material, underlayment, transitions, baseboards if included, removal of old material, and installation. Measure each area and identify subfloor repairs separately where possible. Flooring is often where an early overrun gets hidden by reducing material quality late in the project; if that is the plan, underwrite it openly rather than discovering it midstream.

6. Paint

Interior and exterior preparation, primer, paint, caulk, drywall touch-ups included in the painter's scope, and labor. Paint exposes the quality of the surfaces beneath it. Extensive patching, lead-safe work where required, or exterior scraping can move this line well beyond the cost of paint itself.

7. Electrical

Panel work, circuits, outlets, switches, fixtures, smoke and carbon-monoxide devices, code corrections, and electrician labor. Safety and code items should not be treated as optional cosmetic scope. If an electrician identifies panel or wiring problems, get the correction priced as its own line so you can see its effect on the deal.

8. Plumbing

Supply and drain repairs, water heater, fixtures outside the room-specific budgets, sewer or main-line work, and plumber labor. Avoid double-counting: if a bathroom quote includes fixture installation, do not also place the same labor in the general plumbing line. Each cost belongs in one category, with the quote reference attached.

9. Appliances

Refrigerator, range or cooktop, oven, dishwasher, microwave, disposal, and any laundry appliances included in the sale plan. Price the actual package, including delivery, installation, and removal if those are not included. Appliances are frequently ordered late, which makes them an easy place for an unplanned upgrade to consume contingency.

10. Landscaping and curb appeal

Cleanup, trimming, planting, mulch, minor grading, fencing repairs, exterior lighting, and other work that affects the approach to the house. This line is not an excuse for cosmetic spending with no buyer value. Its purpose is to make the property look maintained and photograph cleanly without turning the yard into a second renovation.

11. Demolition and cleanup

Interior demolition, debris, dumpsters, haul-off, hazardous-material procedures where legally required, jobsite cleaning, and final clean. Demo is also an information event: it reveals what was hidden. Schedule the budget review immediately after opening walls and before approving the next round of finish work.

12. Permits and fees

Building permits, inspections, plan fees, and other jurisdiction-specific charges required for the planned scope. Do not make the budget work by pretending permitted work is unpermitted. A missing permit can become a resale, insurance, or closing problem long after the contractor has been paid.

13. Other and miscellaneous

Lock changes, small hardware, minor repairs that do not belong elsewhere, delivery fees, and small items that would otherwise be forced into the wrong trade category. Keep this line small and specific. If “misc” grows into a second budget, the scope is not understood yet.

14. Contingency

Money reserved for conditions and price changes you cannot responsibly predict at the start. Contingency is not a contractor category and it is not a design-upgrade fund. It is a real budget line — approximately 10% of the rehab budget is a practical planning target for this framework.

On a $45,000 all-in rehab cap, for example, reserving 10% means:

If the scoped work already totals $45,000 before contingency, then the honest rehab budget is not $45,000. It is $49,500. Calling it $45,000 anyway does not reduce the cost; it only hides the reserve.

Build the budget in this order

Step 1: Define the finished product

Choose the target buyer, finish level, and must-fix items before pricing. A budget for a clean entry-level resale should not quietly contain luxury selections, and a higher-end ARV should not be paired with finishes that will not support it.

Step 2: Inspect by category

Walk the property with the 14 lines open. For each line, record one of three states: work required; no work required; unknown until opened or tested. “Unknown” is useful information. It tells you where contingency and further inspection belong.

Step 3: Price the scope, not the room name

“Kitchen — $11,000” is still incomplete. A usable line identifies what is included: cabinets, counters, sink, installation, and exclusions. This is what allows two contractor quotes to be compared without assuming they cover the same work.

Step 4: Add contingency before approving the deal

If the project only works with a zero reserve, it does not have a cushion. Re-price the property, reduce the scope honestly, or walk away. Do not solve the problem by renaming contingency as profit.

Step 5: Freeze the approved budget

Once the deal is accepted, the original budget becomes the baseline. Later changes should be visible as revisions, not silent edits to the starting number.

Track plan versus actual while the work is happening

A budget reviewed only at the end is a history report. Track it while decisions can still change. At minimum, keep these fields for each category:

The sign matters. In this framework, a negative variance means the category is over budget. For example, if the kitchen plan is $11,000 and incurred costs reach $12,100:

The project now has a specific problem in a specific line. You can respond by reducing a lower-priority scope item, using contingency through a documented transfer, approving a change that still leaves the deal within its target, or stopping to re-underwrite. What you should not do is spread the overrun vaguely across the total and hope another category comes in low.

Separate “incurred” from “paid”

An invoice can be a real cost before it has been paid. Track actual costs by category and payments by vendor or date. Reconciling the two prevents both missed bills and duplicate payments.

Review at project events

Good review points are:

• After demolition and inspection of concealed areas
• When each major trade finishes
• Before ordering finish materials
• Before approving any change order
• Before listing the property

The point is not paperwork for its own sake. It is to discover an overrun while there are still choices.

Change orders belong outside the original lines

A change order is a change in scope, price, or both. Approve it in writing before the work is done, assign it to a category, and add it to the revised budget. That gives you three numbers that should never be confused:

Unapproved work should not quietly enlarge the budget. Verbal extras become disputes because each side remembers a different scope and price.

How to use contingency without wasting it

Contingency should be released for a named reason, such as concealed damage, a required code correction, or a failed system discovered during the work. Use a simple rule:

1. Identify the category affected.
2. Record the condition or change.
3. Price the correction.
4. Transfer the approved amount from contingency to that category.
5. Update the remaining contingency.

Do not use contingency for a nicer countertop merely because the money appears available early. The reserve may still be needed for something you cannot see yet.

If contingency is exhausted, re-run the whole deal before spending more. A rehab overrun also affects profit and may affect financing. In the sample flip used across these guides, a 50% rehab increase reduces projected profit from $41,660 to $17,630. A 20% ARV shortfall at the same time turns it to −$30,470. Category tracking does not remove that risk, but it gives you the information early enough to act on it.

Bottom line

A workable rehab budget has names, scope, and a reserve. The 14 lines separate the work you can price from the uncertainty you must fund. Plan-versus-actual tracking then tells you — early, by category — whether the project is still the deal you underwrote.

Start with the free House Flip Analyzer Lite to screen the purchase before you commit. Use the Full version when you need the 14-category rehab budget, expense log that feeds actuals into each line, contractor quote comparison, change orders, payments, and the dashboard that shows the budget while the flip is still in progress.