Migration and consolidation of two HubSpot accounts with custom API tooling
We merged two HubSpot accounts into a single operational system without interrupting lead generation. Websites, landing pages, and forms were migrated, the lead-capture and automation logic was preserved, duplicates were removed, and the parallel CRM setup was retired.
About the Project
After launching a new business direction, the client ended up with two HubSpot accounts collecting leads in parallel — each with its own landing pages and forms, with the team working across two competing sources of truth. HubSpot doesn't provide a native account-to-account migration path, so the project became an engineering task. We had to extract objects through the API carefully, recreate them in the target account, preserve relationships, and verify that the lead flow worked the same way after the migration as it did before.
About Customer
Nick runs a digital agency for which we'd previously built a corporate website. In his agency, HubSpot is the operational core of sales and marketing: traffic lands on pages, forms create leads, workflows trigger sales actions, reports show what's actually working. Once the second account appeared, the business faced real risk — duplicated contacts, a fragmented pipeline, and marketing and sales split across two systems. Nick's goal was simple to state and hard to execute: one HubSpot account as the single source of truth, no lost leads, no manual transfers, no process downtime.
Account consolidation
The migration had to be designed as a controlled process — API export, transformation, import, validation — while acknowledging that some entities can't be moved one-to-one between accounts.
Marketing assets
Landing pages, websites, forms, fields, lists, workflows, integrations, tracking — all of it carries dependencies and behavior. If you migrate only the visual shell and lose the associations, the business gets pretty pages that no longer generate leads.
Forms as a revenue point
If a form changes or breaks, the business loses inquiries the same day. We had to replicate fields, validations, hidden fields, redirects, thank-you pages, UTM logic, notifications, and workflow triggers — exactly.
Contact deduplication
Merging two accounts almost always means duplicates, conflicting properties, and inconsistent field rules. The data had to come together in a way that preserved useful history while taking the chaos out of reporting and automation.
Minimal downtime
The project needed a transition plan with clear timing, checkpoints, and rollback logic so marketing and sales wouldn't lose leads during the switch.
Proposed Solution
We built the migration as a controlled pipeline: define the canonical target account, establish the source-of-truth rules for contacts, companies, and properties, automate object migration through the HubSpot API where it's safe, and keep manual verification for the zones where the cost of error is highest — forms, critical landing pages, workflow triggers. The process ran in batches with control samples after each step, and the final transition was executed as a cutover against a written checklist.
HubSpot migration as an engineered process
We treated the migration as a reproducible technical workflow, not a sequence of one-off manual moves. That made it possible to rerun batches, validate results, and stay in control of what had already been moved.
Canonical target account and dedupe rules
We defined which account would be the source of truth for which properties, and the conflict-resolution rules for merging duplicate contacts and companies. Ambiguities in the data model were resolved before the migration began.
Marketing assets with behavior preserved
We treated landing pages, websites, forms, and the workflows around them as business assets that had to keep working after the move — not just as design elements to copy across. Associations, redirects, tracking, and lead-routing logic were part of the migration scope from day one.
Forms and lead flow as a protected layer
Forms got their own protected track. We replicated structure and behavior carefully and validated them through real test submissions so that lead creation, automation, and notifications would carry over without disruption.
Cutover with fallback logic
The final move was prepared as a controlled cutover with prioritized assets, a validation order, and rollback logic. That kept the risky window short and the business operating while consolidation finished.
We started with a full map of assets across both accounts: websites and landing pages generating traffic, forms actually bringing in leads, workflows triggering tasks and emails, lists and properties used for segmentation. We cut out the pages and forms no longer in use and built a list of the critical objects where the cost of error was highest. In parallel, we agreed on the success metrics for the migration — preserving inquiry volume, creating incoming contacts in the correct pipelines, keeping the right lead context for the sales team.
+1 Resource
Results
After the migration, the agency moved from a split CRM setup to a single operational HubSpot account — without interrupting lead generation.
1 day of risky lead-generation window
instead of weeks of parallel chaos
60% fewer
duplicate contacts after account consolidation
10 hours per week
of operational time freed up by eliminating data transfers between accounts
A stable lead flow after migration
no broken forms
One source of truth
for reporting and operations
A reusable set of migration utilities
for similar tasks in the future
Get in Touch
Or send us a message and we'll get back to you within 15 minutes during business hours