Business ideas for plumbers & trades — what the AI actually generates

Idea 1 — The Priority Care Plan Fit: 9.1/10

Who it serves

Homeowners with ageing gas boilers or freshly installed heat pumps who only ever call when something breaks — starting with the ~400 past customers already in Stefan's phone.

Why it fits

It converts trust Stefan has already earned into recurring revenue with almost no new hours on the tools: annual service visits replace some of the day work instead of stacking on top of it. Priority access is genuinely valuable when his diary runs six weeks deep, and a plan needs no social media — a letter and a follow-up call to existing customers does the selling. Set up once, it bills automatically, which suits a man who hates paperwork.

Realistic earning range

€800–€2,400/month within 12 months at 50–150 active plans. His €2,500 goal is roughly 150 plans — realistic against a 400-customer base, but a year-one build, not a quick win.

Idea 2 — The Heat-Pump Readiness Check Fit: 8.4/10

Who it serves

Austrian homeowners weighing the switch from gas or oil to a heat pump, unsure whether their house, radiators, and budget can take it — and wanting an independent verdict before they talk to a salesperson.

Why it fits

It is pure judgement, not labour: a structured walkthrough, a few measurements, and a written verdict — easy on the knees and sized for a Saturday morning. Seventeen years of installs make Stefan exactly the independent voice subsidy-curious homeowners are missing, and every check is a warm lead for future install work he can schedule on his own terms. Slightly lower score because it's project income, not recurring, and demand moves with subsidy cycles.

Realistic earning range

€600–€1,800/month at 3–8 checks monthly once word spreads — typically 2–4 months to the first paid bookings.

Idea 3 — Ask-a-Plumber video triage Fit: 7.7/10

Who it serves

Homeowners and small landlords facing a dripping tap, an airlocked radiator, or a mystery noise — who need ten minutes of expert eyes to know whether it's a DIY fix or a real callout.

Why it fits

Stefan diagnoses faults by sound and description all day for free; this prices that instinct, fits his two evening hours, and needs nothing but a phone. It also pre-qualifies his own jobs — the serious cases convert to visits. Lowest score of the three: ticket sizes are small, and because Stefan hates admin, booking and payment must be fully automated or this dies in his inbox.

Realistic earning range

€200–€700/month within 3–6 months as evening-sized side income — a complement to ideas 1 or 2, not a replacement.

Positioning (excerpt)

“You're not selling maintenance; you're selling the certainty that the heating works on the coldest morning of the year. Every competitor sells callouts — you sell the absence of callouts. Lead with the waiting list: your diary is booked six weeks out, and plan members skip the queue. That priority access — not the annual service — is the real product. Name the plan after the outcome: ‘Warm Guarantee’ beats ‘Service Contract’ on every door in Graz…”

Pricing (excerpt)

“Charge €19/month or €199 a year — never a discounted one-off service. Monthly framing makes the decision feel like a subscription, not a contract; the annual option rewards the loyal base you already have. €199 sits just under the €200 line and just under one emergency callout — the comparison every homeowner silently makes. Cap the first cohort at 50 plans so the priority promise stays true, then raise to €229…”

The full strategy continues with the revenue math, the 48-hour validation test, customer persona, 90-day plan, and objection scripts — generated for your specific idea when you unlock the kit.