the short answer
Off-the-shelf CRMs are cheaper to start and usually right for teams under about five people with a conventional sales process. A custom CRM tends to win once per-seat fees, paid add-ons and workarounds exceed roughly £300–£400 a month, or when your process genuinely does not match the software.
What do off-the-shelf CRMs actually cost?
The advertised per-seat price is rarely what you pay. The features small businesses actually need — automation, reporting, multiple pipelines, email integration — usually sit on higher tiers, and the price scales with every person you add, including people who barely log in.
Add the integrations you bolt on to make it fit, and the real monthly figure is often two or three times the headline. It is worth totalling every subscription that exists purely to patch a gap in the CRM.
When is a custom CRM worth it?
When your process is genuinely unusual, when per-seat pricing is punishing you for growing, or when your team has quietly given up and gone back to spreadsheets. That last one is the clearest signal: software people avoid is worse than no software, because now your data is split.
A custom build is also worth considering when the CRM needs to talk to something specific — a quoting engine, a scheduling system, an industry tool with no ready integration.
- You pay per seat for people who only need read access
- Your pipeline does not fit the stages the tool imposes
- Key work happens in spreadsheets alongside the CRM
- You pay for three tools to patch one gap
- Reporting still gets rebuilt by hand each month
What does a custom CRM cost to build?
It varies enormously with scope, but the useful framing is monthly rather than upfront. Built on modern tooling, a focused CRM covering your real pipeline, contacts, automations and reporting can be delivered on a monthly fee comparable to what you already pay in subscriptions — without the per-seat penalty.
Be wary of anyone quoting a large fixed price before understanding your process. The first phase should be mapping how you actually sell, not choosing a tech stack.
What are the risks of building your own?
Two real ones. First, scope: it is easy to keep adding until it becomes a product in itself. Start with the smallest thing that replaces the spreadsheet, then extend. Second, maintenance — software needs someone to look after it.
Ask who owns the code and what happens if you stop working with the builder. If the answer is anything other than 'you own it', that is a serious risk regardless of price.
common questions
Is a custom CRM cheaper than HubSpot or Salesforce?
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It can be, particularly as headcount grows, because there are no per-seat fees. Off-the-shelf is usually cheaper for very small teams with a conventional process.
How long does it take to build a custom CRM?
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A focused first version covering pipeline, contacts and core automation typically takes a few weeks. Broad, multi-department systems take considerably longer.
Who owns a custom CRM once it is built?
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You should. Insist that the code, the data and the hosting accounts are yours before work starts.
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