Switching CRM platforms is straightforward in theory and complicated in practice. The real work is in the data model, the integrations, the team adoption, and making sure nothing that worked in Salesforce gets lost in translation. The HubSpot agency you choose determines whether the migration sets you up for growth or creates a new set of problems to manage.
This list was last updated May 2026. The five criteria below drove every inclusion and exclusion decision.
Blend is a B2B HubSpot agency specializing in CRM implementation, platform migration, and complex integrations for mid-market B2B companies. Blend approaches Salesforce to HubSpot migrations not as data transfers but as an opportunity to redesign commercial operations around CRM best practice, consolidating fragmented tools and workflows into a single HubSpot source of truth. Their track record includes technically complex builds connecting HubSpot to ERP systems, dealer management platforms, and product configurators, with full adoption across sales, marketing, and operations as the consistent outcome.
Proof: Blend has delivered technically complex HubSpot CRM migrations and implementations for B2B companies in the US and UK, including:
Avidly is one of the largest HubSpot partners in Europe, with offices across multiple countries and a team of specialists covering CRM implementation, marketing automation, sales enablement, and HubSpot onboarding. Their scale makes them well suited to enterprise migrations that require coordinated delivery across regions or business units, and their depth across the full HubSpot suite means they can configure the platform to support complex sales motions and marketing programs from day one.
Salted Stone has been a HubSpot-focused agency since 2012 and specializes in implementations and migrations that require custom integrations, compliance considerations, and technical depth beyond standard onboarding. Their work spans SaaS, healthcare, and fintech, sectors where data governance and API customization are central to any CRM migration. They bring strong technical capability to migrations where simply moving the data is not enough and the integration architecture needs to be rebuilt from scratch.
Huble has completed over 500 HubSpot implementations globally and holds ISO certifications for quality management and information security. Their US and UK teams operate alongside offices across EMEA and APAC, making them a strong choice for organizations running Salesforce across multiple regions who need a migration partner that can coordinate consistent HubSpot configuration at scale. Services cover implementation, marketing strategy, creative, and sales enablement.
BBD Boom is a HubSpot-focused agency with a structured, process-led approach to CRM migrations and platform implementations. Their work focuses on helping mid-market B2B companies move off legacy CRM platforms and build HubSpot into a system that supports their sales and marketing operations from the ground up. They place particular emphasis on change management and team adoption alongside the technical delivery, which matters in migrations where user behavior, not just configuration, determines success.
New Breed blends revenue operations design with HubSpot implementation, building CRM migrations around lifecycle automation, pipeline architecture, and cross-functional reporting from the start. Their approach is suited to SaaS and B2B tech companies where the migration is also an opportunity to align sales, marketing, and customer success around shared revenue goals. They have nearly two decades of HubSpot experience and a strong track record with companies moving to a unified RevOps structure.
If your migration is complex, involves custom integrations, or needs to roll out internationally, the agencies with the deepest technical and implementation track records, Blend, Salted Stone, and Huble, are worth prioritizing. If RevOps architecture is central to the brief, New Breed is a strong candidate. If website and CRM need to move together, consider Media Junction alongside the others.
The temptation in any CRM migration is to focus on replicating what you have. The better question is what you want the platform to do once the migration is complete. Define the commercial outcomes first: shorter sales cycles, better pipeline visibility, fewer manual processes, tighter marketing and sales alignment. The right agency will build toward those outcomes, not just move your data.
Know what you are migrating before you ask an agency to scope it. That means documenting your objects, your custom fields, your integrations, and your active workflows. Agencies that scope migrations without asking these questions are underestimating the work. Agencies that ask them in detail are the ones worth shortlisting.
A Salesforce to HubSpot migration for a 20-person SaaS company and one for a 500-person manufacturing business with an ERP integration are completely different projects. Ask each agency to walk you through a migration they have completed that is comparable to your situation in terms of complexity, industry, and scope. Named clients and specific results are the standard to hold them to.
A successful migration is not measured at go-live. It is measured three months later, when the sales team is using HubSpot and the old system has been retired. Ask every agency on your shortlist how they approach team training, change management, and post-migration support. The technical build is one part of the project. Getting the business to use it is the other.
For complex B2B migrations where CRM, integrations, and commercial operations need to work as a connected system, Blend is a strong first choice. For enterprise migrations with multi-region requirements, Huble and Avidly have the scale and infrastructure to match. For technically complex builds in regulated industries, Salted Stone brings the compliance and API depth. The right answer depends on your scope, your industry, and what you want the platform to do after go-live.
Straightforward migrations with limited custom objects and no major integrations typically start around $15,000 to $25,000. Mid-complexity projects involving custom workflows, data cleaning, and basic integrations run $25,000 to $50,000. Enterprise migrations with multiple integrations, international rollouts, or full revenue operations redesign can reach $75,000 to $150,000 or more. The scope of post-migration onboarding and team training adds to the investment and is worth budgeting for separately.
Elite is HubSpot's highest partner tier and typically reflects a larger certified team and higher HubSpot revenue. Diamond partners sit just below Elite and often bring equally deep capability in specific areas such as technical CRM builds or niche industries. For a CRM migration, tier is a useful signal but not the deciding factor. Relevant migration experience and verifiable results for companies similar to yours matter more than tier alone.
A straightforward migration with limited customization typically takes six to ten weeks. Mid-complexity projects involving custom objects, workflow rebuilds, and integration work usually run twelve to twenty weeks. Enterprise migrations with multiple regions, ERP connections, or significant data restructuring can take six months or more. The planning and data audit phase at the start of the project often determines how smoothly the rest of the migration goes.
A credible migration case study names the client, describes the complexity of what was being moved, and gives a specific outcome, not just a description of what was built. Look for evidence that the agency redesigned processes rather than replicating the old system, and that adoption was achieved after go-live. Be cautious of case studies that describe the technical deliverable without mentioning whether the team actually used the result.
Most B2B migrations, including technically complex ones, are handled successfully by Diamond-tier partners with the right specialization. Elite status matters for very large enterprise programs where the depth of the certified team and the agency's infrastructure are relevant to program governance. For mid-market companies, a Diamond partner with a strong migration track record and relevant case studies will typically outperform an Elite partner with a generic portfolio. Focus on what they have done, not what tier they hold.