
A scope of work (SOW) is a written document that defines exactly what a contractor will deliver on a renovation or construction project. It specifies the work to be performed, materials to be used, quality standards to be met, and deliverables to be provided. A well-written scope of work is the foundation for accurate bids, clear contracts, and successful project execution.
Renovation projects frequently go over budget and past deadline. While many factors contribute, ambiguous scope is one of the most common root causes.
When the scope is vague, contractors interpret it differently. One bidder includes demolition; another assumes the owner handles it. One prices premium fixtures; another bids builder-grade. Comparing bids becomes impossible because they're not pricing the same work.
Vague scope also creates change order exposure. "Renovate the bathroom" doesn't specify whether that includes tile replacement, fixture upgrades, or just paint and hardware. When the contractor's interpretation differs from the owner's expectation, change orders follow. Each change order adds cost, extends timeline, and creates friction.
The problem compounds at portfolio scale. If every property manager writes scopes differently, contractors can't develop efficient pricing. The portfolio can't benchmark costs or identify patterns. Each project becomes a one-off negotiation. This affects everything from capital projects to unit turns.
Scope documentation varies widely across the industry, from detailed specifications to verbal agreements.
Each approach shifts risk. Vague scopes shift scope definition risk to execution, where changes cost more. Contractor-generated scopes shift it to bidding, where misalignment may not surface until work begins.

Effective scope documentation balances completeness with efficiency. The goal is enough detail to get accurate bids and prevent disputes, without over-specifying to the point of diminishing returns.
Describe each work item with enough specificity that two contractors would interpret it the same way.
Weak: "Paint interior" Better: "Paint all interior walls and ceilings in units 101-110. Two coats of latex paint over existing painted surfaces. Prep includes patching holes up to 2" diameter. Color: SW 7015 Repose Gray."
Include what's included and what's explicitly excluded. Assumptions cause disputes; explicit exclusions prevent them.
Specify materials by type, grade, or product. Where finish materials affect aesthetics or durability, name the specific product or provide an approved equivalent standard.
| Item | Specification |
|---|---|
| Interior paint | Sherwin-Williams ProMar 200, eggshell finish |
| LVP flooring | 6mm+ wear layer, 20mil+ wear surface, waterproof core |
| Faucets | Single-handle, brushed nickel, ceramic cartridge |
| Appliances | GE or Whirlpool, stainless steel, standard depth |
"Or equivalent" allows contractor flexibility but requires submittal approval before installation.
Define what "complete" looks like. This is especially important for finish work where quality is subjective.
Reference industry standards where applicable (e.g., ASTM, manufacturer specifications).
Specify what the contractor must provide beyond the physical work.
Document site conditions, access constraints, and coordination requirements.
| Metric | Definition | Target Range |
|---|---|---|
| Change order rate | Projects with change orders vs. total projects | Below 20% |
| Change order value | Change order cost as % of original contract | Below 10% |
| Bid variance | Spread between high and low bids | Tight spread indicates clear scope |
| Scope revision rate | Scopes requiring revision after bid receipt | Below 10% |
Assuming shared understanding: "Renovate to our standard" only works if the contractor knows your standard. New vendors and new team members don't have institutional context. Write it down.
Over-specifying methods: Define outcomes, not methods. "Install flooring per manufacturer specifications" is better than prescribing every installation step. Contractors know their trade.
Forgetting exclusions: What's NOT included matters as much as what is. "Scope does not include: electrical upgrades, HVAC work, window replacement, or appliances" prevents assumptions.
Single-use scopes: Writing detailed scopes for each project without creating reusable templates. Common project types should have standard scopes that get customized, not written from scratch.
Sophisticated operators treat scope documentation as operational infrastructure that improves over time.
What should a scope of work include?
At minimum: detailed work descriptions, material specifications, quality standards, deliverables (photos, warranties, permits), site conditions, timeline expectations, and explicit exclusions. The level of detail should match project complexity and risk.
How detailed should a scope of work be?
Detailed enough that two contractors would interpret it the same way and provide comparable bids. Over-specifying methods is unnecessary—focus on outcomes and standards. Under-specifying materials and expectations creates change order risk.
Who should write the scope of work?
The owner or owner's representative should write the scope. Contractor-generated scopes create inconsistent proposals and shift risk. Use standard templates where possible, customized for each project's specifics.
How do you prevent change orders?
Clear scope documentation is the primary defense. Explicitly state what's included and excluded. Conduct pre-bid site walks so contractors understand conditions. Include allowances for known unknowns (like concealed conditions). Document everything in writing before work starts.
Scope of Work Checklist:
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