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Net Revenue Retention (NRR) · Engineering Firms

Net Revenue Retention (NRR) for Engineering Firms.

The single most important SaaS retention metric.

Engineering practices, engineered to scale.

Operations & Retention · Engineering Firms

Why engineering firms operators use the net revenue retention (nrr).

Calculate NRR (Net Revenue Retention) and GRR (Gross Revenue Retention) from your existing customer base.

Engineering firms — civil, structural, mechanical, electrical — are professional services businesses with unique constraints: project-based revenue, deep specialization, and complex stakeholder management. SAZ helps engineering firms scale revenue, productize services, and embed AI across project delivery.

Benchmarks

What good looks like — typical ranges to compare against.

NRR > 130%
Elite SaaS
NRR 110–130%
Healthy
NRR 100–110%
Acceptable
NRR < 100%
Shrinking
The formula

How net revenue retention (nrr) is calculated.

NRR = (Start MRR + Expansion − Contraction − Churn) ÷ Start MRR × 100
Industry context

What changes when net revenue retention (nrr) is applied to engineering firms.

Project-based revenue volatility

Productization of recurring services

Talent leverage and utilization

Document, drawing, and report production

Run the numbers

Open the net revenue retention (nrr).

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Open Net Revenue Retention (NRR)
Net Revenue Retention (NRR) · Engineering Firms

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