Every model.
Every county.
For Florida builders, Florida Load Calcs prepares energy calcs (Form R405 or R402) and Manual J, S and D for every model and lot, at one statewide price in all 67 counties: $445 for the full package, $595 sealed, delivered in 2–3 business days from a complete intake. Plan-review comments on the same design are revised free.
The performance path, used well
R405 lets a model keep its big slider or dark roof by trading elsewhere, as long as the home’s annual heating, cooling and water-heating loads, normalized for equipment efficiency, come in at or under 95% of the code’s standard reference design (85% under the 9th Edition from December 31, 2026).1
Master plans, re-filed
Osceola County expired every master plan approved under the 7th Edition at the end of 2023; new 8th Edition masters needed approval before reuse.2 We rebuild model calcs to the current edition and worst-case orientation.
2026 edition ready
The 9th Edition is scheduled for December 31, 2026. The edition in effect when you apply governs the permit, so we confirm your application date at intake.6
Questions from builders
Do you price per lot or per model?
Per house, at the statewide price: $445 for the full package up to 2,500 square feet and one system, with size and system add-ons published on the pricing page. Above 6,000 square feet, or with three or more systems, we quote it. Ask about volume once you've seen the first packet.
Can one calc cover a model built in several orientations?
A Manual J has to reflect the building's actual orientation under Florida's code, so each lot's orientation matters. For models built repeatedly, we run the worst-case orientation for sizing and can issue lot-specific versions; tell us the lots at intake.
Counties and guides
- 12023 Florida Building Code, Energy Conservation (8th Ed.), Chapter 4 [RE]: R401–R406
https://up.codes/viewer/florida/fl-energy-conservation-code-2023/chapter/RE_4/re-residential-energy-efficiency - 2Osceola County, Building Office Frequent Questions
https://www.osceola.org/Doing-Business/Building-and-Permits/Permit-Information/Building-Office-Frequent-Questions - 3Charlotte County, Residential Single Family permit page
https://www.charlottecountyfl.gov/departments/community-development/building-construction/permits/residential-permits/residential-single-family.stml - 4St. Johns County Building Department, Residential Sufficiency Checklist (PDF, 2026)
https://www.sjcfl.us/wp-content/uploads/2026/02/Residential-Sufficiency-Checklist.pdf - 5City of North Port, Submittal Checklist for Online New Single-Family Residence (PDF, revised October 2024)
https://www.northportfl.gov/files/assets/main/v/9/building-amp-planning/permit-forms/202-submittal-checklist-for-online-new-single-family-residence.pdf - 6Florida Load Calcs, 2026 Florida energy code guide (facts verified Oct 9, 2026)
https://floridaloadcalcs.com/florida-energy-code-2026/