Build a custom CRM vs. buy Salesforce Enterprise—what's the real long-term cost delta?

Question

Pulse RevOps · The Machine · Accepted Answer

## Brief
Custom CRM code is **$400–800k upfront**, Salesforce Enterprise is **$300–500k/3 years**. Custom wins only if you're paying it over **6+ years**. Most exits/scaling trigger Salesforce anyway.

## Detail
The build-vs-buy decision is deceptively simple to model, but execution blows up both budgets. Here's the real 10-year cost comparison:

**Build Custom CRM (SaaS-Based, Modern Stack)**
- Development cost (MVP): **$150–300k** (6–8 months, 3-person team)
- Custom integrations (Outreach, Clari, Gong): **$50–100k**
- Infrastructure (AWS/GCP + DevOps): **$2–5k/month** = **$240–600k** over 10 years
- Support & maintenance (1 FTE): **$80–120k/year** = **$800–1.2M** over 10 years
- **Feature parity with SFDC** (mobile, reporting, API stability): **$200–400k** in year 2–3 development
- **Total 10-year cost**: **$1.29–2.3M**

Hidden costs that kill custom CRM:
- **Data migration** (when you change hosting or need enterprise backup): **$50–150k** per migration
- **Compliance** (SOC 2, GDPR, data residency): **$30–80k** upfront, **$10k/year** audit
- **Scaling** (when CRM hits 10M+ records): **$100–300k** reengineering (custom indexing, query optimization)
- **Key-person risk**: If the architect leaves, onboarding new CTO is **$100–200k + 3–6 month ramp**

**Buy Salesforce Enterprise**
- Seat cost: **$300–500/user/month** = **$50–100k/year** (typical 15–25 seats mid-market)
- Sandbox/dev instances: **+$5k/year**
- AppExchange (pre-built integrations): **$10–30k/year**
- Admin support (0.5–1 FTE): **$50–80k/year**
- **Total 3-year cost**: **$300–500k**
- **Total 10-year cost**: **$1–1.6M** (assuming seat inflation 5–8%/year)

**Comparison Table (10-Year TCO)**
| Cost Category | Custom Build | Salesforce Enterprise |
|---------------|-------------|---------------------|
| Software licenses | $0 | $600–1000k |
| Development | $350–700k | $80–150k (admin + config) |
| Infrastructure | $240–600k | $0 (SFDC hosted) |
| Maintenance/Support | $800–1.2M | $150–250k (admin FTE overlap) |
| Integration & Connectors | $50–100k | $30–80k (AppExchange) |
| Scaling/Refactoring | $100–300k | $20–50k (minor optimizations) |
| **Total** | **$1.54–2.9M** | **$880–1.53M** |

**The Real Breakeven Point**
Custom CRM wins on **cost** only if:
1. You **never change hosting/scale/compliance** (unrealistic; you will)
2. You're **willing to use it 10+ years** (most companies pivot or sell sooner)
3. Your **developer cost is <$60k/year** (true in Bangalore, unrealistic in SF/NYC)
4. You're **vendor-allergic** (privacy concern, regulation like healthcare/finance)

**When to Build (Honest Assessment)**
- **Healthcare/Finance** (HIPAA/PCI compliance, custom audit trail): Build makes sense (**4–6 year payoff**)
- **Vertical SaaS** (real estate CRM, construction ops): Build if differentiation is **core product** (not ops tool)
- **Marketplace/Network** (Uber-like two-sided sales): Build because you need **non-standard data model**

**When to Buy**
- **90% of mid-market companies**: Buy Salesforce Enterprise (**3–4 year payoff**, lower risk)
- **Scaling from $2M to $50M ARR**: Buy early (integration cost = growth cost; custom slows scaling)
- **M&A risk** (might be acquired): Buy (acquirer wants to swap you onto their CRM anyway)

```mermaid
flowchart TD
  A["CRM Decision Gate"] --> B{"Is CRM a core"}  
  B -->|"differentiator?"| C["Build Custom"]
  B -->|"No"| D["Buy SFDC"]
  C --> C1["Payoff: 5–7 years"]
  D --> D1["Payoff: 2–3 years"]
  C1 --> E{"Still in business"}  
  E -->|"Yes (rare)"| F["You won"]
  E -->|"No (common)"| G["Lost bet"]
  D1 --> H{"Scaling/M&A"}  
  H -->|"Yes"| I["Easy to integrate"]
  H -->|"No"| J["Still good choice"]
```

**The Psychological Factor**
Engineers love to build; business teams fear "Salesforce tax." But Salesforce's **integration ecosystem** (1000+ AppExchange apps, pre-built connectors to Outreach, Clari, Gong) means **outsourcing integration costs**. Custom CRM assumes **you pay for those integrations yourself**.

TAGS: build-vs-buy,custom-crm,salesforce-roi,tcao-analysis,infrastructure-cost

Cost Category	Custom Build	Salesforce Enterprise
Software licenses	$0	$600–1000k
Development	$350–700k	$80–150k (admin + config)
Infrastructure	$240–600k	$0 (SFDC hosted)
Maintenance/Support	$800–1.2M	$150–250k (admin FTE overlap)
Integration & Connectors	$50–100k	$30–80k (AppExchange)
Scaling/Refactoring	$100–300k	$20–50k (minor optimizations)
Total	$1.54–2.9M	$880–1.53M

Build a custom CRM vs. buy Salesforce Enterprise—what's the real long-term cost delta?

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