Part of Our Process
Every jurisdiction reviews a permit set differently: different codes, different departments, different paths to approval. We keep track of those differences so our clients do not have to. This atlas is the public version of that knowledge, compiled from each jurisdiction's official sources.
Compiled from official sources, June 2026
Compare code adoption, reviewers, timelines, and fees across Middle Tennessee counties.
Plate 01
| Codes in Force | 2024 I-Codes + 2023 NEC, with local amendments |
|---|---|
| Primary Reviewers | Metro Codes, Fire Marshal, Water & Sewer, Health, Planning, overlay districts |
| Typical Timeline | No published standard; one set reviewed concurrently |
| Fees & Taxes | Paid through ePermits; per-department schedules |
| Where It's Filed | ePermits + ePlans (electronic) |
Plate 02
| Codes in Force | 2021 I-Codes; 2018 IECC with 2009 tables |
|---|---|
| Primary Reviewers | Building Codes, Planning & Engineering, septic and utilities |
| Typical Timeline | No published standard; email updates at each stage |
| Fees & Taxes | Published fee schedule; permits and privilege taxes paid separately |
| Where It's Filed | Electronic Plan Review (idtplans) |
Plate 03
| Codes in Force | 2024 I-Codes (county adoption) |
|---|---|
| Primary Reviewers | Building Codes, Planning & Engineering, TDEC/CUD septic |
| Typical Timeline | 24-48 hrs standard; +3-5 days for larger or complex homes |
| Fees & Taxes | Department fee schedules plus school facilities and development taxes |
| Where It's Filed | In person, Building Codes Department |
Everything in the county's record orbits its plate. Select a node to open codes, reviewers, submittals, timelines, fees, and the official sources.
Metro Nashville's consolidated government covers all of Davidson County through the Metro Codes Department. Verified June 2026.
Every fact in this atlas traces to a page published by the jurisdiction itself. Read the originals:
01Davidson County
02Williamson County
Codes, processes, and timelines change as jurisdictions update them. This atlas summarizes published information and our reading of it; confirm current requirements with the jurisdiction or with us before relying on them for a project.
Building in one of these counties? We have walked this path before.
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