The 2026 Florida energy code, for residential permits.
The Florida Building Code, 9th Edition (2026), is scheduled to take effect December 31, 2026, replacing the 8th Edition (2023). The edition in effect when you apply for the permit governs it. For energy, the performance path needs an e-Ratio of 0.85 and maximum fenestration SHGC drops from 0.50 to 0.40.
- Effective
- Dec 31, 2026 (scheduled)Replaces the 8th Edition (2023), in effect since Dec 31, 20231
- Rule status
- ProposedRule 61G20-1.001 published Sep 23, 2026; comments open to Oct 14, 20262
- Which edition
- Your permit application dateThe edition in effect when you apply governs the permit for its life3
- Performance path
- R405 e-Ratio 0.85Window SHGC max 0.50 → 0.40; duct-testing exception removed4
- Price
- $195 · $445 · $595Energy calc from · full package · sealed. Same in all 67 counties · price list
- Ready by
- 2–3 business daysExpedited: within 24 business hours, +$150. Tell us the application date and we prepare the calc to the edition that applies · how it works
When it takes effect
The Florida Building Code, 9th Edition (2026) is scheduled to take effect December 31, 2026.1 It replaces the 8th Edition (2023), in effect since December 31, 2023.
One caveat: the rule that adopts the 9th Edition (Rule 61G20-1.001) was published as a proposed rule on September 23, 2026, with comments open to October 14, 2026.2 Until it is final, the date could move.
Which edition applies to your permit
The permit application date decides the edition · F.S. 553.73(7)(d)
Under Florida law, the edition of the code in effect on the date you apply for the permit governs that permitted work for the life of the permit and any extension.3
Ask your building department what it counts as a filed application. Practice varies by jurisdiction.
What changes in the energy code
The Commission’s summary of significant changes lists these for residential compliance:4
| Item | 8th Edition (2023) | 9th Edition (2026) |
|---|---|---|
| Effective | Dec 31, 2023 | Scheduled Dec 31, 2026 |
| R405 proposed design, max area-weighted fenestration SHGC | 0.50 | 0.40 |
| R405 duct-testing exception | Available | Removed |
| R405 e-Ratio to pass | 0.95 (R405.3: normalized loads ≤ 95% of the standard reference design) | 0.85 |
| Prescriptive path | No R407 requirement | New R407 additional-efficiency requirement |
The four changes in plain words, with chartslist + 2 charts
- Performance path (R405): now requires an e-Ratio of 0.85 to pass.
- Duct testing: the duct-testing exception is removed for R405 compliance.
- Windows (R405 proposed design): maximum area-weighted average fenestration SHGC drops from 0.50 to 0.40.
- Prescriptive path: a new R407 additional-efficiency requirement.
Axis illustrative; marked value from the source.
Axis illustrative; marked values from the source.
What to do now
Track application dates · check window SHGC early · tell us the date when you order
- Note the expected permit application date for every job in your pipeline. It decides the edition.
- For jobs applying on or after the effective date, check window SHGC early if you use the performance path.
- Tell us the application date when you order, and we prepare the calc to the edition that applies.
Price
One statewide price in all 67 counties. Tell us the permit application date and we prepare the calc to the edition that applies.
Sources
4 primary references · numbered to match the citations
- 01Florida Building Commission, 2026 FBC Update (June 30, 2026)floridabuilding.org
- 02Florida Administrative Register, Notice 31378159 (Rule 61G20-1.001)flrules.org
- 03Florida Statutes 553.73(7)(d)flsenate.gov
- 04Florida Building Commission / DBPR, Significant Provision Changes, 9th Ed. (2026) FBC Energy Conservationfloridabuilding.org