Coming Soon

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

Procore Autodesk Build PlanGrid Fieldwire Buildertrend CoConstruct

Accounting / ERP

Sage 300 CRE Sage 100 Contractor Viewpoint Vista Foundation Software

Scheduling

Oracle Primavera P6 Microsoft Project

Estimating

PlanSwift Bluebeam Revu ProEst

Safety & Compliance

SafetyCulture (iAuditor) ComplianceQuest

Equipment & Payroll

EquipmentShare HCSS Paylocity

What You Save

The difference between stitching integrations together yourself and having a purpose-built layer.

Without OneHazel

Manual double-entry between PM and accounting systems
Change orders take days to cascade through all systems
Dedicated IT staff to maintain each integration
Vendor switches require months of rebuild

With OneHazel

AI generates connectors from vendor API docs in minutes
Change orders cascade automatically across all connected systems
One unified API replaces point-to-point connections
Swap vendors by changing a connector — zero rebuild

Start connecting your construction stack

From project management to accounting to field operations — one integration layer that understands construction.