FieldServiceSoftware.net

Glossary

Add-On Creep

Add-on creep in field service software: how optional features escalate your monthly bill. Housecall Pro is the canonical example.

Related: payment processing fee total cost of ownership bring your own payments

Definition

Add-on creep is the pattern where a field service software subscription’s real cost exceeds its advertised sticker price because features that seem essential, GPS tracking, digital proposals, price books, SMS notifications, are billed as separate monthly charges on top of the base plan.

Concrete example: Housecall Pro

Housecall Pro’s Basic plan is listed at £58/mo. For a 5-tech plumbing shop running normally, the actual invoice within 90 days of rollout typically includes:

  • Base plan (Essentials, required for multi-user): £189/mo
  • Sales Proposals add-on: £30/mo, required for signed-on-glass digital estimates
  • Vehicle GPS tracking: £75/mo (5 vehicles at £15/vehicle)
  • HCP Payments rake: 2.49–3.49% on card volume, £4,980–£6,980/yr at £200K revenue

Month-3 all-in: £294/mo software + £415–£582/mo payments = £709–£876/mo

The marketing site implies £58/mo. The real bill is 12–15x that for an established 5-tech shop.

Why it happens

FSM vendors optimise their pricing pages around the lowest possible entry number. Enterprise software companies have practiced this for decades; the FSM SMB tier learned from them. Feature lock-ins (proposals require the add-on, GPS requires the add-on) are engineered to force upgrades.

How to protect against it

  1. Ask “what does a shop my size actually pay?” on Reddit (r/smallbusiness, r/sweatystartup, r/HVAC) before signing.
  2. Run through every feature you plan to use and identify which plan tier includes it.
  3. Calculate the payment-processing rake separately, this is never on the marketing pricing page.
  4. Benchmark against the TCO using our total cost of ownership model.

Further reading