Service calls or installation projects: choosing an electrical work mix

Keep small residential installations separate from major construction

The comparison uses an existing-home service crew, one van and two appropriately licensed electricians. Service calls have two productive crew-clock hours; a small installation has eight. Both are lump-sum authorized jobs with bounded material and permit allowances. New construction, multiweek project teams, general-contractor retainage and major utility coordination are outside the model.

A larger project is not simply several of the case’s eight-hour jobs. It can create staged labor, subcontractors, work in progress, supplier deposits, progress billing and delayed inspection/retainage releases. Those require a project-ledger model before comparison. Texas contractor licensing is a prerequisite for the business, not evidence that every proposed project is within the specific team’s capability.

Compare equal productive hours before comparing invoice counts

These are comparable job baskets at unchanged time allocation, not new executed monthly scenarios. The installation basket brings more invoice revenue, but the service basket contributes more per productive clock hour at these particular price/material inputs. Changing quote prices, labor duration or material recovery can reverse the ordering. Comparing one service invoice with one installation invoice hides the difference in hours consumed.

The payroll allocation is explanatory. In the monthly statements the same fixed owner/journeyman roster is paid once, including idle time; the allocation is not deducted again as a second wage cost.

Service density and project continuity use time differently

A series of short calls needs dense routing, predictable access and ready stock. An installation can reduce inter-job driving but occupy the diary while waiting for a required inspection or customer access. Count all paid preparation, collection and callback time rather than assuming that a large invoice fills every paid hour.

The base crew has 160 paid clock hours and 107.7 maximum billed hours after its travel/admin/callback budget. A long-trip service portfolio can consume that ceiling even with strong contribution per billed hour. The separate travel test reduces usable capacity to 92.3. Installation continuity should be credited only after actual scheduling records show it.

Build a weekly dispatch calendar with named jobs and material readiness, then record what actually completed. Protect time for estimates, purchasing, documentation and corrective work. Accepting more jobs than that calendar supports can create unpaid returns and late customer collections.

Price the stock and collection cycle together

The case’s service materials are budgeted at $40 per productive hour, while installation materials are $100. Stock purchases are cash-paid. Even a profitable installation can require material outflow before the final invoice cash arrives, particularly when the customer changes the fixture or a special-order item cannot be returned.

Base installation collects 70.0% in the completion month and the remainder in the next. Reducing that fraction to 40.0% lowers the tested base cash trough from $20,830 to $17,391 with no change in EBITDA. The model currently assumes no pre-completion customer deposits. A real deposit policy would need contract/legal review and a liability/revenue-timing ledger, not just extra sales.

Texas residential tax treatment matters here: this lump-sum case includes supplier tax in materials. Changing to separated materials or commercial work changes tax collection obligations and could change the cash cycle. Classify actual jobs before blending them.

Choose the next mix from completed-job evidence

Start with separate service and installation job-cost records. Compare realized contribution per paid hour, quote-to-book conversion, callback ratio, days to cash and schedule variance. Then accept a mix that fits license/skill scope, actual route density and the available cash reserve. Do not convert an assumption into an optimal-share claim merely because a spreadsheet produces a percentage.

Use service work to fill genuinely available slots, rather than interrupting a scoped installation so often that both jobs lose efficiency. Reserve installation slots when materials, authorization and inspection arrangements are ready. If a profitable job type routinely needs a second van or another licensed worker, evaluate that staffing step as a separate investment.

Keep customer urgency and promised availability in the decision. This model excludes emergency night/weekend coverage and overtime. Offering those services changes paid coverage and compensation even if only a few calls sell.

Finance a workable mix, then test its weak month

7(a) can support qualifying equipment and working-capital purposes, but a financing route does not establish a viable job mix. The executed downside moves toward installations while reducing price recovery and slowing collections, and cash becomes negative in month 4. That combination shows why bigger invoices cannot substitute for contribution and receipts.

The guide-set model holds the two-person payroll, CAPEX and debt fixed across the scenarios; it cannot rescue a bad mix by quietly turning the owner into unpaid labor. Test a revised mix with actual job-price, time and collection evidence, then examine monthly minimum cash and the cash threshold within real capacity.

TDLR’s guide is useful for checking local inspection responsibilities and required contractor identification. It does not supply operating prices or demand. The final mix decision should come from completed jobs that the licensed crew can repeat and collect, supported by the matching cash calendar.