The Integration Layer
for Construction
The average construction firm uses 10–15 different software applications per project — project management, accounting, scheduling, estimating, safety, BIM. Most don't talk to each other. Field data reaches the office days late. Budget-impacting changes slip through the cracks.
Why Construction Integration Is Uniquely Hard
Generic integration platforms weren't built for this industry. Here's what they miss.
Three-Tier Software Stack
Construction software spans cloud (Procore, Autodesk Build), hosted on-premise (Viewpoint Vista), and legacy desktop (Sage 300 CRE). Generic iPaaS platforms only handle the cloud tier, leaving the most critical financial systems disconnected.
Domain-Specific Data
Cost codes, WBS structures, submittals workflows, AIA billing formats — construction has specialized data models that generic automation tools don't understand. A change order isn't just a form; it cascades through scheduling, accounting, and subcontractor billing.
Field-to-Office Gap
Daily logs, safety inspections, progress photos, and RFIs are captured in the field but don't flow automatically to project controls and accounting. Manual re-entry introduces errors and delays.
How OneHazel Solves It
Purpose-built integration infrastructure for construction technology.
AI-Powered Connector Generation
Point our AI agent swarm at any construction vendor's API docs. Seven specialized agents analyze endpoints, detect auth, generate OpenAPI specs, map to a canonical project data model, build connectors, validate, and fix issues — automatically.
Universal Gateway
One API call handles translation between your PM system, accounting ERP, scheduling tool, and field apps. Auth, schema translation, circuit breaking, rate limiting — all handled. Your platform talks to OneHazel; we talk to every vendor.
Canonical Project Data Model
Projects, cost codes, change orders, submittals, daily logs — normalized into a unified schema. Switch from one PM tool to another without rebuilding your reporting or accounting integrations.
Event-Driven Project Workflows
When a change order is approved in Procore, automatically update the budget in Sage, notify the subcontractor, and adjust the schedule. Cross-system automation without custom code.
Key Integrations
Connect the tools your teams already use — from field to back office.
Project Management
Accounting / ERP
Scheduling
Estimating
Safety & Compliance
Equipment & Payroll
What You Save
The difference between stitching integrations together yourself and having a purpose-built layer.
Without OneHazel
With OneHazel
Start connecting your construction stack
From project management to accounting to field operations — one integration layer that understands construction.