A scope of work for a rehab is a room-by-room, system-by-system list of every repair or upgrade a property needs, with enough detail that a contractor can price it and you can turn it into a reliable rehab estimate. Done well, it turns a vague walkthrough impression into numbers you can trust before you make an offer.
What a scope of work is and why it matters
A scope of work (SOW) is the document that bridges
"this house needs work" and an actual number you can underwrite. Instead of eyeballing a property and guessing at a repair budget, you walk it systematically, write down every item that needs attention, and assign a plan — repair, replace, or leave as-is — to each one.
Skipping this step is one of the most common reasons deals go sideways. Investors who estimate repairs from memory or a quick walkthrough tend to miss big-ticket items hiding behind cosmetic issues, like an aging roof under a fresh coat of paint or outdated wiring behind new drywall. A written scope forces you to look everywhere, not just at what's obvious.
Your scope of work also becomes the backbone of your rehab estimate, which in turn feeds your ARV math and any max-offer calculation you run, whether you're using the 70% rule for a flip or figuring out what a rehab does to a property's post-repair rent.
How to build a scope of work, step by step
You don't need special software to start — a spreadsheet or even a clipboard works. The goal is consistency: cover the same categories every time so nothing gets skipped.
- •Walk the exterior first: roof, gutters, siding, windows, grading/drainage, driveway, and landscaping.
- •Move room by room inside, noting flooring, walls, ceilings, trim, doors, and fixtures in each one.
- •Check every major system separately: electrical panel and wiring, plumbing supply and drain lines, HVAC equipment and ductwork, and the water heater.
- •Note permit-triggering items up front (structural, electrical panel upgrades, additions) since these add time and cost beyond materials and labor.
- •For each item, decide: repair, replace, or defer. Write down the reason — a cracked tile is cosmetic; a leaking pipe behind it is not.
- •Group items into trade categories (roofing, electrical, plumbing, flooring, paint, etc.) so you can get apples-to-apples contractor quotes.
- •Attach photos to each line item. This speeds up contractor bidding and protects you if scope gets disputed later.
Turning the scope into numbers
Turning the scope into numbers
Once every item is listed, you price it — either from your own cost knowledge, a contractor walkthrough, or a per-unit cost guide. This priced-out list is your rehab estimate, and it should include a contingency line, since even a careful scope misses things once walls get opened up.
The level of detail you need depends on the project. A light cosmetic refresh might only need a one-page list. A gut rehab with structural or system work deserves a detailed, trade-by-trade breakdown, ideally reviewed by a contractor before you finalize your offer.
This number directly affects your offer math. If you're flipping, it's one of the two inputs (alongside ARV) in the 70% rule. If you're holding and renting, repair decisions here affect what rent you can realistically get and whether the numbers support the 1% rule or a stricter screen like 1.25% or 2%.
Common pitfalls to avoid
Most scope-of-work mistakes come from moving too fast or trusting a single walkthrough. A few patterns show up again and again:
- •Treating cosmetic and structural issues the same way — a scope should flag anything that could hide a bigger problem, not just what's visible.
- •Vague line items like "fix bathroom" instead of itemized tasks a contractor can actually price.
- •No contingency buffer, which turns a tight budget into a loss the moment something unexpected turns up.
- •Skipping the permit question, which can quietly add weeks and cost to a project that looked straightforward on paper.
- •Using one global cost-per-square-foot number instead of pricing trades separately, which hides where the real risk is concentrated.
A simple scope-of-work checklist
Use a table like this as a starting template, then expand it per room and per trade for your specific property.
| Category | What to inspect | Decision to make |
|---|---|---|
| Roof & exterior | Age, leaks, flashing, siding condition, windows | Repair, replace, or defer |
| Electrical | Panel age/capacity, wiring type, outlet condition, code issues | Full rewire, partial update, or pass |
| Plumbing | Supply lines, drain lines, water heater age, fixture condition | Repipe, spot repair, or replace fixtures |
| HVAC | Equipment age, ductwork condition, filter/vent access | Replace system, service only, or no action |
| Interior finishes | Flooring, paint, trim, cabinets, countertops | Cosmetic refresh vs. full replacement |
| Structural/foundation | Cracks, settling, water intrusion signs | Engineer review if any red flags appear |
Practical takeaway
A good scope of work is simply a complete, honest list of what a property needs, organized so it can be priced accurately. It's the difference between a rehab estimate built on a hunch and one you can actually stand behind when you make an offer. Build the habit of walking every property the same systematic way, and your repair numbers will get more reliable with every deal.
Frequently asked questions
What's the difference between a scope of work and a rehab estimate?
The scope of work is the detailed list of what needs to be done — repair, replace, or leave alone, item by item. The rehab estimate is the priced-out version of that list, usually with a contingency added, which is the number you actually plug into your offer math.
How detailed should a scope of work be?
It depends on the project. A light cosmetic update can work with a short, room-by-room list, while a project touching structural, electrical, or plumbing systems should be broken out trade by trade in enough detail that a contractor can quote it without guessing.
Who should write the scope of work — me or a contractor?
Many investors draft an initial scope themselves during the first walkthrough to use for quick underwriting, then have a contractor review or expand it before finalizing numbers, especially for anything involving major systems or permits.
Does a scope of work matter for a rental, not just a flip?
Yes. For a buy-and-hold property, the scope determines what condition the unit will be in and what rent it can support, which affects whether the deal clears a cash-flow screen like the 1% rule or the 50% rule for ongoing expenses.
How this post was made: the figures above come from OnOffDeals’ own market-scan data (refreshed roughly monthly); the draft was written with AI assistance and checked against that data before publishing. Everything here is an estimate to help screen deals, not financial advice.
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