**TL;DR —** A production **SimPRO + GoHighLevel (GHL)** integration syncs **contacts**, **won opportunities → jobs**, **job stage → pipeline stage**, and **job completion → review request**. Native connectors rarely cover two-way logic. VijayaTech Labs ships this via n8n or Pabbly with documented field maps — live in 3–6 weeks ([integration page](https://vijayatechlabs.com/integrations/simpro-gohighlevel-sync)).

---

## Why trades contractors need this sync

UK and Australian trades businesses commonly run:

- **GoHighLevel** — lead nurture, pipelines, SMS/WhatsApp
- **SimPRO** — scheduling, job costing, technicians in the field

Without sync, sales marks an opportunity **Won** in GHL while ops creates the job manually in SimPRO. Job completion never updates the CRM. Review requests get forgotten.

We covered the **SimPRO + n8n + Xero** invoicing loop separately ([trades stack guide](/blog/simpro-n8n-xero-trades-stack)). This post focuses on **CRM ↔ job software**, not accounting.

---

## Two-way sync overview

```mermaid
graph LR
    GHL[GoHighLevel CRM] <-->|Contacts, stages| MID[n8n / Pabbly]
    MID <-->|Jobs, status| SIM[SimPRO]
    MID --> WA[WhatsApp / SMS updates]
    MID --> REV[Review request on complete]
```

---

## Field map: Contact / Customer

| SimPRO field | Direction | GoHighLevel field | Notes |
| --- | --- | --- | --- |
| Customer name | ↔ | Contact name | Split first/last if required |
| Email | ↔ | Email | Dedup key |
| Phone | ↔ | Phone | E.164 normalize |
| Site address | → | Custom field `job_address` | New leads from GHL |
| SimPRO customer ID | → | Custom field `simpro_customer_id` | Idempotent upsert |
| GHL contact ID | ← | Custom field `ghl_contact_id` | Write back after create |

---

## Field map: Opportunity → Job

| Trigger | Action |
| --- | --- |
| GHL opportunity stage = **Won** | Create SimPRO job (or quote → job) |
| GHL `project_type` custom field | Map to SimPRO job type / cost centre |
| Assigned sales rep | Map to SimPRO salesperson or tag |
| Lead source | Preserve on both sides for reporting |

**Guard:** Do not create duplicate jobs — check `simpro_job_id` on opportunity before create.

---

## Field map: Job status → Pipeline

| SimPRO job status | GoHighLevel pipeline stage |
| --- | --- |
| Scheduled | Job Scheduled |
| In Progress | In Progress |
| Completed | Completed / Awaiting Review |
| Cancelled | Lost / Cancelled |

Updates should be **event-driven** (webhook or polling with cursor), not nightly CSV exports.

---

## Customer comms automation

On each stage change, trigger WhatsApp or SMS via GHL or WhatsApp Cloud API:

| Job stage | Customer message |
| --- | --- |
| Scheduled | Confirmation + window |
| En route | Technician ETA (if tracked) |
| Completed | Thank you + [review request](https://vijayatechlabs.com/automation/google-business-profile-reviews) |

---

## Error handling essentials

1. **Dead letter queue** — failed API calls logged with payload
2. **Retry with backoff** — SimPRO rate limits vary by plan
3. **Manual reconcile view** — Google Sheet or admin dashboard for mismatches
4. **Field map doc** — every transform versioned in git

---

## SimPRO vs ServiceM8?

| Platform | Typical fit |
| --- | --- |
| **SimPRO** | Larger UK/AU trades, multi-crew |
| **ServiceM8** | Smaller AU field-service operators |

ServiceM8 + CRM map: [ServiceM8 integration guide](https://vijayatechlabs.com/integrations/servicem8-crm-sync).

---

## Proof timeline

A UK trades contractor went live with full SimPRO + GHL sync — opportunity automation and review triggers — within **3 weeks** of Blueprint sign-off ([field ops automation](https://vijayatechlabs.com/automation/field-ops)).

---

## FAQ

### Can SimPRO sync with GoHighLevel natively?
There is no robust native two-way sync for most trades use cases. Custom API plumbing via n8n or Pabbly is standard.

### How long does a SimPRO + GHL build take?
Typically 3–6 weeks fixed scope from Blueprint sign-off.

### What does it cost?
Field ops builds start from $5,000 — scoped in the [Automation Blueprint](https://vijayatechlabs.com/book-blueprint).

### Do you also sync Xero?
Yes — often as a second workflow. See [SimPRO + n8n + Xero](/blog/simpro-n8n-xero-trades-stack).

---

## Related

- [7 automations every field service business needs](/blog/7-automations-field-service-businesses)
- [Field ops automation pillar](https://vijayatechlabs.com/automation/field-ops)
- [Book a Blueprint](https://vijayatechlabs.com/book-blueprint)