The verdict in three sentences
For a multi-trade maintenance contractor with 22 technicians in Miami, a custom scheduling app costs 35,000 to 75,000 USD and ships in 3 to 4 months, versus 40 to 80 USD per technician per month for off-the-shelf software. At this size, custom only pays off after 4 to 5 years, unless your processes (multi-site contracts, on-call rotations, specific work orders) force you to work around standard software. The right choice depends less on price than on the gap between how you work and how the vendor expects you to work.
What the spreadsheet really costs you
An owner scheduling 22 HVAC, plumbing and electrical technicians on a shared spreadsheet loses time in three places: daily dispatch, re-keying paper work orders and late invoicing. Across Miami-Dade, with condo associations in Brickell, retail in Coral Gables and homes in Coconut Grove, poorly planned routes in heavy traffic add to the bill.
| Loss item | On spreadsheets | With an app | Estimated annual gain |
|---|---|---|---|
| Daily scheduling | 2 h a day for the dispatcher | 45 min a day | 280 h |
| Re-keying paper work orders | 10 min per job, 6,500 jobs | Signed on mobile, no re-keying | 1,080 h |
| Invoicing delay | 12 days after the job | 2 days | Cash flow: 35,000 to 55,000 USD freed |
| Lost or unbilled work orders | 2 % of jobs | Under 0.3 % | 10,000 to 16,000 USD |
| Wasted miles | Unoptimized routes | Jobs grouped by area | 6 to 10 % of fuel |
These are 2026 orders of magnitude for a contractor running 6,500 jobs a year. They justify leaving the spreadsheet. The real question is: which tool?
Off-the-shelf or custom: the numbers
| Criterion | Off-the-shelf field service software | Custom app |
|---|---|---|
| Upfront cost | 0 to 3,500 USD setup | 35,000 to 75,000 USD |
| Recurring cost | 40 to 80 USD per technician per month, so 10,560 to 21,120 USD a year | Hosting and maintenance: 3,000 to 7,000 USD a year |
| Time to go live | 2 to 6 weeks | 3 to 4 months |
| Offline mode | Varies, often limited | Designed from day one for basements and mechanical rooms |
| Work orders | Standard templates | Your templates per trade (HVAC, plumbing, electrical) |
| Maintenance contracts | Basic handling | Your rules: frequency, multi-site, penalties |
| Ownership | Data held by the vendor | Code and data are yours |
Offline mode is often the deciding factor. An HVAC technician servicing a chiller in a Brickell condo parking garage has no signal. The app must capture photos, readings, parts used and the customer's signature, then sync everything once back above ground.
Typical scope of a custom app
| Module | Content | 2026 range (USD) |
|---|---|---|
| Scheduling and dispatch | Weekly view per technician, drag and drop, skills and licenses | 8,000 - 16,000 |
| Offline mobile app | Work orders, photos, readings, sync | 9,000 - 20,000 |
| Signed work order | Touch signature, PDF emailed to the customer automatically | 3,500 - 7,000 |
| Contracts and preventive maintenance | Recurring visit generation, renewal alerts | 4,500 - 10,000 |
| Invoicing | Quotes, invoices, QuickBooks or accounting export | 5,000 - 12,000 |
| Customer portal (optional) | Service requests, history, documents | 5,000 - 10,000 |
A version 1 without a customer portal lands around 35,000 to 50,000 USD. The top of the range applies to contractors managing complex contracts with property managers and multi-site retail chains.
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Carlos, owner of a multi-trade maintenance company in Miami, employs 22 technicians. Off-the-shelf software at 55 USD per technician per month would cost him 22 × 55 × 12 = 14,520 USD a year. The custom app is quoted at 54,000 USD, with 3,500 USD a year of hosting and maintenance. Annual savings versus the subscription are therefore 11,020 USD, and custom pays off after 54,000 / 11,020, about 4.9 years. If Carlos grows to 35 technicians by 2028, the subscription rises to 23,100 USD a year and the break-even drops to about 2.8 years. Either way, the productivity gains (around 1,300 hours a year) come with any tool.
FAQ
At how many technicians does custom start to make sense?
As a 2026 order of magnitude, above 30 to 40 technicians, or from 15 if your processes do not fit standard software. At 22 technicians, break-even sits between 4 and 5 years.
Does the app work without a signal?
Yes, if it is built offline-first. Data is stored on the phone and synced as soon as the network returns, which adds roughly 15 to 20 % to the mobile module cost.
Is a work order signed on a tablet legally valid?
Under the US ESIGN Act and Florida law, an electronic signature tied to a timestamped PDF is generally enforceable. For high-stakes contracts, a certified e-signature service costs a few dollars per signature.
How long until we are operational?
Plan 3 to 4 months of development, then 2 to 3 weeks of phased rollout with a pilot team of 4 to 5 technicians.
Can we start with off-the-shelf software and migrate later?
Yes, provided you check upfront that customers, contracts and history can be fully exported. A migration usually costs 3,500 to 9,000 USD in data transfer.
Let's scope your project. Tell us your headcount, trades and job volume: we will price a version 1, an indicative budget and a realistic timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
