A CRM needs five kinds of record: contacts, companies, deals, activities and the pipeline stages a deal moves through. You can build one in a spreadsheet, a no-code database, an internal-tool builder or your own application. Start from your pipeline: define each stage by what has to be true for a deal to leave it, then build only the fields and views that support those stages. Plan the data move, permissions, history and the connections to email, calendar and billing before you switch.
Off-the-shelf CRMs are built for every business at once. Teams build their own when the pipeline they need doesn't fit the stages, objects or seat prices of the one they have. It's a reasonable project, as long as you scope it before you start.
Should you build your own CRM?
Build one when at least one of these is true:
- Your process doesn't fit. Your deals move through steps a standard pipeline can't model without workarounds, or one sale involves records the CRM doesn't have.
- The CRM is part of your product. Your customers or your staff work in your own software all day, and a second system means typing everything twice.
- You need the data on your own terms. Where it's stored, who can see it, or how it joins to the rest of your data matters more than features.
- You use a small part of a large tool. You pay for seats and features you don't touch, and the part you do use is simple.
Don't build one to save time this quarter. A CRM you build is a product you maintain.
What does a CRM need at a minimum?
| Record | What it holds | Links to |
|---|---|---|
| Contact | A person: name, email, phone, owner | Companies, deals, activities |
| Company | An organization: name, domain, address | Contacts, deals |
| Deal | One thing you're trying to sell: value, stage, owner, close date | A contact or company, activities |
| Activity | A call, email, meeting, note or task, with a date and who did it | Any of the above |
| Pipeline and stages | The ordered steps a deal moves through | Deals |
Two more things every team ends up needing: a history of changes (who moved this deal, and when) and owners and permissions (who sees and edits what).
What are the ways to build one?
| Approach | Suits | Watch for |
|---|---|---|
| A spreadsheet | One or two people and a short list of deals | No history, no permissions, easy to overwrite |
| A no-code database | A small team that wants views, forms and simple automations | Record and automation limits as you grow |
| An internal-tool builder on your own database | A team with a developer and data already in a database | You own the data model and its upkeep |
| Your own application | A CRM that is part of your product or holds your core data | You own everything, including email sync and mobile |
Many teams move down this table over a few years. Pick the approach that fits the next two years, not the next five.
How do you design the pipeline?
Start from the stages, not the fields.
- List the stages your deals really go through, in order, from first contact to paid.
- Define each stage by its exit rule: what has to be true for a deal to leave it. "Proposal sent" ends when the customer accepts or declines, not when someone feels good about it.
- Add only the fields a stage needs to apply its rule or to hand the deal to the next person.
- Decide what happens automatically at each move: a task, an email, a quote, an invoice.
- Add the views people will open every day: my deals, deals stuck in a stage, deals closing this month.
Keep won and lost as stages with reasons. They're the data you'll want in a year.
What do you connect it to?
A CRM is only as useful as what feeds it and what it starts. Plan each connection before you build:
- Email and calendar, so activities log themselves instead of relying on people to type them.
- Your website forms, so new inquiries arrive as contacts and deals.
- Billing: quotes, invoices, payments and payment plans. Decide which system owns each. See what to do about quotes, invoices and payments when you build your own CRM.
- Accounting, usually through billing rather than directly from the CRM.
- Reporting, either inside the CRM or by copying its data to wherever your other reports live.
How do you move your data off HubSpot or Pipedrive?
- Export every object, not just contacts. Companies, deals, activities and notes, with the IDs that link them to each other.
- Keep the old IDs. Store each record's old ID on the new record, so links and later fixes can find it.
- Rebuild the links between contacts, companies and deals before you import activities.
- Move open work last, on a set day: open deals, scheduled tasks, and anything billing-related that's still running.
- Run both systems for a short overlap and compare counts and totals before you turn the old one off.
What do teams underestimate?
- Duplicates. Two people add the same contact on the same day. Decide your matching rule (email, domain, phone) early.
- History. Without a change log, nobody can answer "who moved this deal?"
- Permissions. The first time someone sees a deal they shouldn't, you'll need roles.
- Email sync. It's the feature people miss first, and one of the hardest to build well.
- Mobile. Sales teams update deals from their phones.
- Who maintains it. Name the person who fixes it when a field needs adding or an automation breaks.
Once your CRM is built, Paycove turns its won deals into quotes, invoices and payment plans with one API call, and reports each payment back by webhook.
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