Estimating guide

Electrical schedule of values: an example that bills cleanly.

A schedule of values (SOV) breaks your contract sum into line items that progress is billed against each month. For electrical contractors, a good SOV matches how the work is installed, separates material from labor where allowed, and ties back to the estimate so every value can be defended.

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  • Example electrical SOV
  • Material vs. labor lines
  • Tying SOV to estimate
Cable tray and LED linear light fixtures in the open ceiling of a commercial office under construction

What a schedule of values is

After award, the GC or owner asks for a schedule of values: line items whose values add up to your contract amount. Each month you report work completed and stored materials per line, and the pay application bills accordingly. On AIA-style pay applications, the SOV goes on the G703 Continuation Sheet, which supports the G702 Application and Certificate for Payment and tracks scheduled value, work completed, stored materials, percent complete, balance to finish and retainage per line.

How to structure an electrical SOV

  • By system: service and distribution, feeders, branch power, lighting, lighting controls, fire alarm, low voltage, site electrical, temporary power.
  • By area or phase: by floor or building on phased jobs, so foremen can report progress cleanly.
  • Material and labor: many GCs allow separate lines so stored or delivered material can be billed with documentation.
  • Milestones: submittals, gear release, rough-in, trim, testing, closeout and as-builts as separate lines.

Example electrical SOV

Illustrative percentages only
#DescriptionScheduled value
1Mobilization, submittals, general conditions5%
2Temporary power and lighting3%
3Switchgear and distribution: material14%
4Switchgear and distribution: labor6%
5Feeders10%
6Branch power rough-in (by floor)18%
7Branch power trim5%
8Lighting fixtures: material12%
9Lighting rough-in and install9%
10Lighting controls4%
11Fire alarm7%
12Site electrical3%
13Testing, commissioning, closeout, as-builts4%
Total100%

Your values come from your estimate, not from this table. Gear-heavy jobs (data centers, industrial) can have distribution well above 20%; tenant work is usually branch- and lighting-heavy.

Tie the SOV to the estimate

Build the SOV by grouping estimate lines, not by guessing percentages. If the estimate is organized by system and area, the SOV almost writes itself and you can defend each value. Distribute overhead and profit proportionally across lines rather than loading them onto early lines.

Illustrative calculation

Contract $2,400,000. Estimate direct cost for lighting fixtures material is $252,000 out of $2,016,000 total direct cost.

share of direct cost = 252,000 / 2,016,000 = 12.5% scheduled value = 12.5% x 2,400,000 = $300,000

Front-loading and its risks

Front-loading puts more value on early work than it is worth, to improve cash flow. GCs, owners and lenders watch for it and may reject an unbalanced SOV. It also backfires: if a line is deleted or the job is terminated, overstated early lines lead to disputes and overbilling on your WIP schedule. Keep values proportional to cost plus a consistent markup.

Retainage

Retainage is a percentage withheld from each payment until substantial completion or closeout. Rates and rules are set by the contract and, increasingly, by statute:

  • Private work in California: for contracts entered on or after January 1, 2026, Civil Code 8811 caps retention at 5% of each payment and 5% of the contract price, with exceptions for certain bonded subcontracts and some residential projects.
  • Federal work: FAR 32.103 says retainage should not be used as a substitute for good contract management, and FAR 52.232-5 lets the contracting officer retain up to 10% of a payment only when satisfactory progress has not been made.
  • Other states: many states cap public-project retainage (often at 5%) and some set release deadlines. Check the current statute in your state and the flow-down terms of your subcontract.

Track retainage per line so a completed line can be released when the contract allows.

Change orders

Add approved change orders as new SOV lines rather than folding them into existing ones, numbered to match the change order log, so billing and backup stay separate.

Pay application timing

Most contracts set a monthly cycle with a cut-off date, a pencil draft reviewed with the GC, and a final submission with lien waivers. Missing the cut-off pushes payment a month. Build lines that are easy to measure in the field on that cycle.

Billing checklist

  • Agree the SOV structure with the GC before the first pay app.
  • Bill stored material with invoices, delivery tickets, insurance and storage terms the contract requires.
  • Update percent complete from field progress, not cost spent.
  • Keep closeout lines (testing, O&M manuals, as-builts, training) distinct so a small paperwork item does not hold a large balance.
  • Collect and track conditional and unconditional lien waivers in the form your state requires.

Where the takeoff comes in

Your SOV is only as defensible as the estimate behind it. RenderDraw produces reviewed quantities organized by system and sheet, each traceable to its source, which makes grouping estimate lines into an SOV straightforward. Start with a free sample takeoff, or see the electrical bid proposal example.

Human review, by design

Where RenderDraw fits: the counting, with your review.

Speed is easy to promise. Defensible numbers are the job, so RenderDraw keeps the estimator in control of every quantity that gets priced.

  • Source on every row. Each quantity keeps its source sheet, location and reviewer decision.
  • Lowest confidence first. The review queue shows the drawing tile with the detection highlighted and the extracted value.
  • Uncertain items flagged, not hidden. Anything the AI can't confirm goes to the estimator rather than being guessed.
  • Nothing priced before approval. Rows move on to pricing only after they are accepted.
Electrical devices, wire spools, boxes and cover plates laid out for an electrical material count
FAQ

Questions estimators ask

What is a schedule of values in electrical contracting?

A breakdown of the contract sum into line items, usually on an AIA G703 Continuation Sheet or equivalent, against which monthly progress and stored materials are billed.

How should an electrical SOV be structured?

By system and by area or phase, with material and labor lines where allowed and separate milestone lines for submittals, testing and closeout.

How much retainage is typical?

It depends on the contract and state law. Many public projects are capped at 5%; California caps most private contracts entered on or after January 1, 2026 at 5%; federal contracts allow retaining up to 10% only when progress is unsatisfactory.

Is front-loading a schedule of values acceptable?

It is risky. GCs and owners often reject unbalanced SOVs, and front-loading can cause disputes if lines are deleted or the job is terminated.

How does RenderDraw help with an SOV?

It produces reviewed quantities by system and sheet, so estimate lines group cleanly into SOV lines. Get a free sample takeoff.

Start small

See what the AI reads on your own drawings.

Send one representative electrical plan set. RenderDraw reviews it and follows up with what the AI extracted and what it flagged for review. Your files remain private while the request is assessed, and there is no obligation.

  1. Upload power and lighting plans, the fixture schedule, panel schedules, the one-line and the Division 26 spec sections.
  2. RenderDraw reviews the set and the scope you want tested.
  3. We follow up with extracted quantities, flagged items and next steps.
Sources

Sources and further reading

Standards, manufacturer data and references used for this guide. Numbers marked as rules of thumb are starting points, not substitutes for your own cost history, the project specifications or the manufacturer's current data.

  1. AIA Contract Documents: G703 Continuation Sheet — SOV continuation sheet
  2. AIA help center: Summary of G703-1992 — What G703 tracks
  3. California Civil Code 8810–8822 (retention, private works) — 5% retention cap from January 1, 2026
  4. FAR 32.103 Progress payments under construction contracts — Federal retainage policy
  5. FAR 52.232-5 Payments under fixed-price construction contracts — 10% retention when progress unsatisfactory

Last reviewed November 2026.

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