When the marketplace has nothing for your setup, the integration gets written. Custom objects, association logic, rate limit handling, and an audit trail you can query. From $4,999.
- Map
- Normalize
- Sync
scope-based
Who this is for
Technical lead or founder whose product database, internal tool, or industry-specific platform holds the customer data that HubSpot needs and no marketplace app exists for it.
The pain today
- No marketplace app exists for the system that holds your data
- Your product events never reach marketing in a usable shape
- An in-house script syncs records until it silently fails at 2 a.m.
- HubSpot rate limits break your batch job halfway through
- Your object model does not fit contacts, companies, and deals
The outcome you get
- Field-level mapping agreed in writing before any build work starts
- Deduplication and association handling on every record that lands
- An audit trail from any HubSpot record back to its source payload
- Rate limit handling, retries, and idempotent writes as standard
- Code, infrastructure, and documentation yours as work made for hire
When custom is the honest answer
Most HubSpot integration questions have a cheaper answer than custom development, and I will give you that answer first. A marketplace app, an Operations Hub workflow, or an iPaaS connector covers a large share of real cases at a fraction of the cost.
Custom work earns its price in four situations. Your system has an API but no marketplace listing. Your object model needs custom objects and association labels that generic tools flatten. Your record volume or matching rules exceed what a no-code tool can express. Or you need an audit trail, because someone will eventually ask why a number is what it is and the answer cannot be a shrug.
Field-level mapping agreed in writing before any build work starts
What production-grade actually requires
An integration that works in a demo and an integration that survives a year are different pieces of software. HubSpot enforces API rate limits and your source system will fail sometimes, so batching, exponential backoff, and idempotent upserts are not optional extras.
The parts that matter after launch are the unglamorous ones: every write idempotent so a retry cannot duplicate a record, every batch logged so a record traces back to its payload, a control panel to pause one source without stopping the rest, and monitoring that tells you a sync degraded before a sales rep does.
2M+: Records processed.
Proof this scales
Reevia ran four separate platforms and none of them fed HubSpot in usable shape. Records arrived raw, inconsistently formatted, and with no shared identifiers across systems. I built the integration layer that connects all four: batch ingestion over HTTP, normalization and mapping per source and object type, and upserts with full association handling. Over 2 million records processed. A lead captured in any of the four platforms reaches HubSpot, standardized and pipeline-ready, in under 50 seconds. The whole thing reached production in under four weeks.
What this costs
The published floor is $4,999 and the real number comes from the mapping audit, in writing, before any build work starts. Five things move it: how many source systems feed HubSpot, how many records exist, whether data flows one way or both, which HubSpot objects are involved, and how much history needs backfilling. Two-way sync is the largest single jump, because both sides can write and every field needs an owner, a conflict rule, and loop protection. You can price your own scope on the calculator first. Every engagement carries a 14-day money-back guarantee and a 1-year bug warranty.
Recent proof
A comparable engagement, delivered and documented.
Four systems, one source of truth: HubSpot visibility for one of Brazil's largest vet networks
Built a custom integration layer connecting four source systems into HubSpot for one of Brazil's largest veterinary companies. Leads sync in under 50 seconds.
Read the case studyRelated services
The same work, framed for a different situation.
Frequently asked questions
The questions prospects ask before they book.
Private apps for a single portal you control, which covers most engagements. OAuth when the integration serves multiple portals or ships as a product. The choice is part of the audit and depends on who owns the portal and how many there are.
If it offers no API, no export, and no database access, there is nothing to integrate and I will tell you that rather than sell you a scraper. A scheduled export to a location I can read is usually enough to work with.
Batched requests, exponential backoff on limit responses, and idempotent writes so retries are safe. A rate limit slows a sync down. It does not lose records or create duplicates.
Yes. Custom objects, custom properties, and association labels are core mapping work, and needing them is usually why a marketplace app was not enough.