How We Research & Source Our Content

Primary sources first

Our guidance is grounded in authoritative references rather than other blogs: the FDA Food Code for food-safety rules, the International Mechanical Code (IMC) and PDI standards for ventilation and plumbing math, the EPA for refrigerant rules, NSF/ANSI for equipment sanitation, manufacturer specification sheets for equipment behavior, and official state and county health-department pages and fee schedules for local requirements.

How we handle permit & fee data

• Official schedules only. County and state permit fees come from the jurisdiction's own published fee schedule, with the source linked and an observed date recorded.
• We mark what isn't published. Where a jurisdiction doesn't publish a fee, we show it as not published and point you to the department — we never present an estimate as if it were official.
• Confirm locally. Fees and rules change and vary by jurisdiction. Every local page tells you to confirm with your health department before you rely on a number.

Ranges, not false precision

For costs that genuinely vary — build-out, equipment, financing rates — we give attributed ranges and explain the drivers, rather than inventing a single exact figure. Benchmarks (food cost, labor cost, prime cost) are presented as industry ranges.

Our calculators

Our tools are planning estimates that encode published formulas (for example IMC 507 hood rates or the PDI grease-interceptor method). They are not permit documents or engineered specifications — a licensed professional and your local authority size and stamp the real systems.

Freshness & corrections

Regulations and fees drift over time. We date our data, revisit it, and welcome corrections. If you find something wrong or outdated, tell us via Contact and we'll verify and update it, dating the change.

What we don't do

We don't fabricate statistics, dollar figures, or citations; we don't copy content from other sites; and we don't let any commercial relationship change a recommendation. When we're uncertain, we say so.

Sources & references

Guidance here is built from primary sources, including:

• FDA Food Code — the retail food-safety baseline most health departments adopt.
• NSF / ANSI standards — commercial equipment sanitation & construction.
• International Mechanical Code (ICC) — ventilation, hoods & make-up air.
• U.S. EPA — refrigerant & environmental compliance.
• ServSafe (National Restaurant Association) — food-safety certification.
• Official state & county health-department fee schedules and manufacturer specification sheets.

How we’re funded

FoodServiceNerd is supported by display advertising and affiliate “where to buy” links — if you buy through one we may earn a commission at no extra cost to you. Those relationships never influence our recommendations, rankings, or which specs and prices we show; we don’t take payment for placement or a favorable rating. See our About page for more.