---
title: "How much does Legionella compliance software cost? Pricing models explained"
source_url: https://legionella.io/articles/legionella-compliance-software-cost/
canonical_url: https://legionella.io/articles/legionella-compliance-software-cost/
pillar: "Digital Logbooks & Record Keeping"
summary: "See how Legionella compliance software is priced - per site, per outlet or per user - what a setup fee actually covers, and the drivers that move your quote."
primary_keyword: "Legionella compliance software cost"
date_published: 2026-04-26
date_reviewed: 2026-06-26
author: "Legionella.io editorial team (REMOTE TECH LTD)"
reviewed_against: "HSE L8 and HSG274 guidance"
region: "United Kingdom"
license: "(c) REMOTE TECH LTD. Quote freely with attribution and a link to source_url."
---

# How much does Legionella compliance software cost? Pricing models explained

Most Legionella compliance software is sold as a recurring subscription priced on one of three things - the number of sites, the number of monitored outlets or assets, or the number of named users - almost always with a one-off setup fee on top. The headline figure tells you very little until you know which of those models you are being quoted on, and what sits inside it.

Two quotes that look miles apart can describe the same job. One vendor folds onboarding and data migration into a slightly higher monthly price; another shows a low per-site rate and bills the setup separately. Knowing the model behind the number is what lets you compare like for like before you sit through a demo.

## What the subscription actually buys

Strip away the marketing and a logbook platform does one thing: it turns your written scheme of control into scheduled tasks, captures the results, and keeps the evidence in a form you can hand to an auditor or inspector. Duty holders are expected to record monitoring, inspection and remedial work and keep those records available [1][2]. The software is the filing system, the reminder and the audit trail in one place.

That framing matters for pricing, because you are paying for capacity - how many sites, outlets and people the system has to carry - not for "Legionella software" as an abstract product. The closer a quote maps to your actual estate, the more honest it tends to be. For a fuller view of what a capable platform should include, see [Features of effective Legionella record-keeping software](https://legionella.io/articles/features-of-effective-legionella-record-keeping-software/).

## The three subscription models, and what each rewards

| Model | Scales with | Tends to suit | Watch for |
|---|---|---|---|
| Per site | Number of buildings or sites | Multi-site estates with similar, modest outlet counts per site | A site with hundreds of outlets costs the same as a tiny one |
| Per outlet / per asset | Monitored outlets, TMVs, tanks, calorifiers | Single complex buildings; estates where outlet counts vary widely | Counts creep as assets are added - agree how they're counted |
| Per user / per seat | Number of named logins | Small teams logging a large estate | Many occasional users (caretakers, agency staff) add up |

The per-user vs per-outlet subscription choice is the one that catches buyers out. If three engineers cover a 40-site portfolio, a per-user model is usually kinder than a per-outlet one. Flip it - one duty holder managing a single tower block with 300 outlets - and per-outlet pricing can balloon while per-user stays flat. Neither is cheaper in the abstract; it depends entirely on the shape of your estate.

Some vendors hide all of this inside banded tiers (Starter, Pro, Enterprise) that cap sites, users or features per band. Tiers are easy to read, but they can force you up a band to unlock one feature you actually need.

## Where the money actually goes

Three buckets drive almost every Legionella software pricing quote. Reading a proposal against these three tells you quickly what is recurring, what is one-off, and what is optional.

**1. The recurring subscription (your ongoing cost).** This is the per-site, per-outlet or per-user fee above, billed monthly or annually. It rises with portfolio size, outlet count and user count, and falls with longer contract commitment - annual paid up front commonly attracts a discount over rolling monthly.

**2. The setup and onboarding fee (your first-year cost).** This is the line buyers most often forget to ask about. It covers building your asset register, uploading schematics, configuring your written scheme as live tasks, importing historic records and training the team. It pushes up when you have many sites, messy or paper-only legacy records to migrate, and bespoke task schedules; it drops when your data is already clean and you accept the vendor's standard templates. As an illustrative steer only, treat it as a single up-front charge worth budgeting for rather than a trivial one - and get the exact figure, and exactly what it includes, in writing.

**3. Optional add-ons.** Remote temperature sensors and other monitoring hardware are a separate capital or rental cost on top of the software, as are BMS or API integrations, premium support SLAs, and per-message SMS alerting. A quote that looks unusually low has often simply stripped these out.

## Free vs paid logbooks

Free logbook tiers exist, and for a single small site with one user they can be genuinely enough to get going. The limits usually bite on the things a duty holder eventually needs: one site only, a single user, no audit-ready PDF export, no multi-user accountability, and sometimes vendor branding on your records. The moment you have more than one site, more than one person logging, or an inspection on the horizon, the paid tier tends to justify its cost-per-site quickly. The trade-offs mirror the wider [Spreadsheet vs software for Legionella records: Excel or a dedicated app?](https://legionella.io/articles/spreadsheet-vs-software-for-legionella-records-excel-or-a-dedicated-app/) question - both free apps and spreadsheets work fine until accountability and audit export start to matter.

## Making the number add up internally

The honest way to justify the spend is to price the thing the software replaces: staff hours spent chasing paper logs, re-keying readings and assembling evidence before an audit, plus the cost of missed tasks that only surface when something goes wrong. A logbook app cost per site that reads as a small line item often pays back in admin time alone across a portfolio. If you need to build that case on paper, [Is a digital logbook worth it? Cost-benefit analysis](https://legionella.io/articles/is-a-digital-logbook-worth-it-cost-benefit-analysis/) walks through the comparison.

## FAQ

### Is there a free Legionella logbook app?
Yes, several vendors offer a free tier. They typically cap you at one site and one user and omit audit export, so they suit a single small property rather than a managed estate.

### Do I pay per site or per user?
Both models exist, and the better deal depends on your estate's shape. Many users across few outlets favours per-outlet pricing; few users across many sites favours per-user. If a vendor offers both, ask them to quote each so you can see the gap.

### Is there always a setup and onboarding fee?
Usually, for anything beyond a free tier. It covers asset-register build, written-scheme configuration, record migration and training. A vendor waiving it entirely may simply be deferring that work back to you.

### Does the price include remote monitoring sensors?
Rarely. Automatic temperature sensors are almost always a separate hardware cost on top of the software subscription, so confirm whether a quote is software-only before you compare it with another.

## How to use this

These are general pricing patterns, not a price list, and not financial or procurement advice. Figures vary widely by vendor, estate and contract, and any range mentioned here is illustrative - confirm every line in a written quote. Just as importantly, software organises and evidences your controls; it does not replace a competent, site-specific risk assessment, which is what decides the tasks the system has to schedule in the first place.

## Before you book a demo

Write a one-page spec first: number of sites, a rough outlet and asset count, how many people will log, whether you need remote sensors, and how much historic data needs migrating. Send the same spec to each vendor and ask them to quote on the same shape - recurring fee, setup, and add-ons broken out separately. That single page turns three incomparable proposals into a like-for-like decision. For the quality criteria to weigh alongside price, see [Best Legionella compliance software: how to compare logbook platforms](https://legionella.io/articles/best-legionella-compliance-software-how-to-compare-logbook-platforms/).

## Sources

[1] HSE, "Legionnaires' disease - what you must do". https://www.hse.gov.uk/legionnaires/what-you-must-do/index.htm
[2] HSE, "Legionnaires' disease. The control of legionella bacteria in water systems - Approved Code of Practice and guidance (L8)". https://www.hse.gov.uk/pubns/books/l8.htm