Migrating from HubSpot to a Custom CRM: Full Guide

HubSpot's pricing scales steeply as teams grow. Operations Hub, Sales Hub Professional, and Marketing Hub Pro together can exceed $4,000 per month for a mid-market team.

The features that make HubSpot compelling at 10 reps become constraints at 50: limited custom object depth, a contact-centric data model that does not map cleanly to enterprise account hierarchies, and per-seat costs that compound with every hire. A custom CRM migration from HubSpot solves the flexibility and cost problem, but only if the migration is executed correctly.

Hit HubSpot's pricing ceiling or found its contact-centric model breaking down for how you actually sell? Schedule a 30-minute call and we will scope the migration before you start any export work. talk to us

Key Takeaways

• HubSpot stores data as contacts, companies, deals, and tickets. Relationships between records must be explicitly rebuilt in the destination schema. There is no automatic mapping.
• HubSpot exports contacts, companies, deals, and activities via CSV and API, but email history tied to the Engagements API is one of the most complex objects to extract cleanly.
• Workflows, sequences, and reporting are not portable. They are HubSpot-specific configurations that must be rebuilt from scratch in the destination CRM.
• HubSpot's deal stage timestamps cannot be backdated. When stage history migrates, the timestamp records the migration date. Use custom date fields to preserve historical stage progression.
• The data audit and cleaning phase is longer than most teams expect. HubSpot's permissive data entry accumulates contacts with no email, deals with no owner, and duplicate companies over time.
• Keep HubSpot live in read-only mode for 60 days after cutover. Historical notes, email threads, and context discovered post-launch remain accessible while both systems run in parallel.

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What data does HubSpot actually export and what does it not?

HubSpot exports contacts, companies, deals, tickets, products, and line items cleanly via CSV and API. Activities require the HubSpot Engagements API and are significantly more complex. Workflows, sequences, reports, and templates do not export at all and must be rebuilt from scratch.

Understanding the export inventory before starting prevents the most common scope surprise: discovering that a third of the data requires API work the initial estimate never included.

• Clean CSV and API exports: contacts (all standard and custom properties), companies, deals with associated contacts and companies, tickets, products, and line items.
• Engagements API required for activities: call logs, meeting records, notes, and email threads are stored as Engagement objects and are not included in standard CSV exports.
• Email body content is not always retrievable. For emails sent through connected Gmail or Outlook accounts, only metadata (date, subject, direction) is retrievable in many cases. The body is often inaccessible.
• Not exportable in any portable format: Workflows, Sequences, Reports and Dashboards, Email Templates, Landing Pages, and Snippets are all HubSpot-specific configurations that must be rebuilt manually in the destination.

Define the export inventory before scoping the migration. Every object in the High complexity row adds development time the initial estimate rarely accounts for.

What is the difference between HubSpot's data model and a custom CRM's, and why it matters for migration?

HubSpot's model is contact-centric: Contacts are the primary object, Companies associate to Contacts, and Deals associate to Contacts. A custom CRM is account-centric: Account is the primary object, Contacts link to Accounts, and Deals link to Accounts via relationship objects. Every migration script must explicitly translate this structural difference.

This mismatch is the single most common source of errors in a HubSpot-to-custom-CRM migration. It cannot be resolved by the migration script alone.

• HubSpot's contact-centric model works well for high-volume lead-driven sales but breaks for enterprise account-based selling where the Account is the primary unit of relationship, not the individual.
• The Contact-to-Account mapping problem: a HubSpot Contact associated with a Company must migrate as a Contact linked to an Account. If the Contact has multiple Company associations, the script must define which Account is the primary one. There is no automatic resolution.
• The deal relationship complication: HubSpot Deals associate with Contacts, not directly with Companies. In the destination, Deals link primarily to an Account. The migration script derives the Account association from the Deal's Company link using the cross-reference tables built during migration.

Define the account-contact relationship rules in the field mapping document before writing any migration code. Resolving these during the migration run produces inconsistent results across tens of thousands of records.

What must be done before exporting a single record from HubSpot?

Five tasks must be completed before any HubSpot export begins: data audit, record triage, field mapping document, custom properties audit, and disabling all destination CRM automation. Skipping any one produces a failure category that is expensive to fix after records are already imported.

The order matters. Running the audit after the export means discovering data quality problems mid-migration, where they cost three times as much to fix.

• Step 1: Data audit. Export all contacts, companies, and deals and run counts: contacts with no email address, companies with duplicate domain names, deals with no owner, deals with no close date.
• Step 2: Record triage. Active contacts engaged in the last 24 months migrate. Contacts older than two years with no activity archive to cold storage rather than importing noise into the new CRM.
• Step 3: Field mapping document. Map every HubSpot property to the destination CRM field including field type, valid picklist values, and transformation rules for every object type.
• Step 4: Custom properties audit. Identify which HubSpot custom properties are actively used versus which were created for a past campaign and are now empty. Do not migrate unused fields.
• Step 5: Disable destination CRM automation. Every workflow, email trigger, and lead scoring rule in the destination must be disabled before the first record is imported or automated emails go to real prospects based on migrated records.

How should the migration script map HubSpot objects to a custom CRM schema?

The migration script must handle four object mappings: Contacts to Contacts (deduplicating on email), Companies to Accounts (deduplicating on domain), Deals to Deals (stage mapping and date format conversion), and Engagements to Activities (linking to destination contacts and deals via cross-reference tables).

Each mapping has specific transformation requirements that must be defined in the field mapping document before any script is written.

Contacts to Contacts

• Map HubSpot email to the destination's unique contact identifier. This is the deduplication key. Same email means update, not create a duplicate.
• Map HubSpot lifecyclestage to the destination's lead stage field using the picklist mapping document. HubSpot lifecycle stage names rarely match destination field values directly.
• Map HubSpot hubspotownerid to the assigned rep field using a user ID cross-reference table built before the migration runs.

Companies to Accounts

• Map HubSpot domain to the destination Account's unique identifier. Domain is the most reliable deduplication key for company records.
• Map numberofemployees, industry, and annualrevenue to the destination Account's company size, industry picklist, and annual revenue number fields per the field mapping document.
• Preserve the HubSpot Company ID as a legacy external ID field on the destination Account. This cross-reference links Contact-to-Account and Deal-to-Account relationships in the subsequent migration steps.

Deals to Deals

• Map HubSpot dealstage picklist values to the destination pipeline stage picklist. Every stage requires an explicit mapping. HubSpot stage names will not match destination stage names.
• Convert HubSpot closedate from Unix timestamp milliseconds to ISO 8601. A format error produces silently incorrect close dates across every deal in the migration.
• Create custom stage date fields for each pipeline stage to store HubSpot's hsdateentered_[stage] values. The destination CRM cannot backdate its native stage timestamps.

Engagements (activities) to Activities

• Call logs: map HubSpot hscallduration, hscalldirection, hscallbody, and hscallrecording_url to the destination activity record. Duration is in milliseconds in HubSpot; convert to seconds.
• Meeting records: map HubSpot meeting title, attendees, start time, and outcome to destination meeting activity fields, preserving the original created timestamp.
• Notes: map HubSpot note body text to the destination note field with the original created timestamp stored as a custom field since the destination cannot backdate system timestamps.

What is the correct load sequence for a HubSpot to custom CRM migration?

Load objects in this order: Users first, then Accounts, then Contacts, then Deals, then Activities. Loading any object before its parent record exists produces orphaned records with broken relationship references that cannot be fixed by updating a field.

• Users load first because every subsequent object has an owner field referencing a destination user ID. Without users in the destination, owner fields cannot be set during any subsequent load.
• Accounts before Contacts. Loading Contacts before Accounts means every Contact's Account link is a broken reference requiring a separate update pass on every affected record after import.
• Deals after both Accounts and Contacts. Every Deal needs a valid Account link and at least one valid Contact link. Both must exist before a Deal can load with complete relationship data.

Loading Activities last means every Activity has a valid Contact and Deal to attach to. Activities loaded before their parent deals are orphaned records with no pipeline context.

What must be rebuilt from scratch after migrating from HubSpot?

Five categories of HubSpot configuration are not portable: workflow automation, email sequences, reports and dashboards, integration connections, and user permissions. All five must be rebuilt in the destination CRM as a parallel workstream running alongside the data migration, not after cutover.

Most teams underestimate this rebuild scope. It is not a migration task. It is a parallel build workstream that must be running before the data migration completes.

• Workflow automation: every HubSpot workflow (trigger, conditions, actions, enrolled criteria) must be documented and rebuilt in the destination CRM's automation framework from scratch.
• Email sequences: each HubSpot sequence (step order, delay between steps, email templates, task steps) must be documented as plain logic and rebuilt as a cadence in the destination before cutover.
• Reports and dashboards: every HubSpot report must be rebuilt using the destination CRM's reporting engine. The data migrates; the report definitions do not.
• Integration connections: every tool connected to HubSpot (email, calendar, enrichment tools, ad platforms, support tools) must be reconnected to the destination CRM via its own integration layer.
• User permissions and team structure: HubSpot's team hierarchy, property-level permissions, and deal visibility rules must be reconfigured in the destination using its role-based access control model.

Start rebuilding reports during parallel running, not after cutover. Every day the team operates without their standard pipeline views is a day the migration feels like a failure regardless of data quality.

Conclusion

Migrating from HubSpot to a custom CRM is a data migration and a system rebuild running simultaneously. The migration scripts move the data. The rebuild workstream rebuilds the automation, sequences, reports, and integrations in the destination. The teams that succeed run both in parallel so the data arrives in a system already configured to receive it.

Before starting any migration work, export the full HubSpot Engagements API data for a sample of 50 contact records and review the output. The complexity of that data, and whether email bodies are accessible, determines the migration timeline more than any other single factor.

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Ready to move off HubSpot into a custom CRM that fits how you actually sell?

Most HubSpot migrations start with an export and end with a discovery: the data model does not translate cleanly, the workflows need to be rebuilt from scratch, and the Engagements API is more complex than the initial quote assumed.

We are LOW/CODE Agency, the leading AI development partner for SMBs and mid-market businesses. We migrate teams from HubSpot to custom CRM systems: data audit, field mapping, Engagements API extraction, migration scripts, load sequencing, and parallel system running, so the team goes live with clean data and a CRM built around the actual sales process rather than HubSpot's contact-centric template.

• Data audit and record triage before any export: contact completion rates, duplicate domain counts, deal owner gaps, and Engagements API complexity assessed before scoping begins.
• Field mapping document as the migration specification: every HubSpot property mapped to its destination field with picklist translations, type conversions, and transformation rules before scripting starts.
• Engagements API extraction scoped correctly: call logs, meeting records, notes, and email metadata extracted and linked to destination records using cross-reference tables.
• Stage date preservation via custom fields: HubSpot hsdateentered_[stage] values stored as custom date fields on the destination deal object so historical stage progression survives.
• Rebuild workstream running in parallel: automation, sequences, reports, and integrations rebuilt in the destination before data migration completes so cutover is a switch, not a starting line.
• 60-day parallel running with HubSpot in read-only mode: historical context remains accessible while the destination CRM proves itself as the system of record.

With 450+ projects delivered for clients including Zapier, American Express, Medtronic, and Coca-Cola, we know what a HubSpot migration looks like when the team goes live with data they can trust.

If you are ready to move off HubSpot into a custom CRM that fits how you actually sell, schedule a call with LOW/CODE Agency and we will start with the Engagements API sample before scoping anything.