RESIDENTIAL
Addition Plans in Florida
Addition plans show how new space attaches to a house that is already standing: the new footprint, how the roof ties in, and what changes in the existing walls and framing. They are drawn from measurements of the real structure so floors, ceilings and roof slopes line up with the new work.
Overview
What Addition Plans covers
Addition plans show how new space attaches to a house that is already standing: the new footprint, how the roof ties in, and what changes in the existing walls and framing. They are drawn from measurements of the real structure so floors, ceilings and roof slopes line up with the new work.
Deliverables
What you receive
The exact set depends on the scope, the county and what the reviewer asks for. These are the documents this work produces.
- addition drawing set
- existing and proposed floor plans
- roof framing plan
- addition drawings
- home addition plans
- house extension plans
Scope
Parts of the work
Depending on the project, the work commonly covers the parts below.
- ceiling height transition
- floor plan overlay
- header sizing
- new foundation
- roof tie-in detail
- wall tie-in detail
Project types
Projects this applies to
These are the projects this is most often requested for.
- bump-out addition
- family room addition
- garage addition
- in-law suite addition
- screened porch addition
Permits
Permit context
In permit terms it is usually filed alongside these.
- addition permit
- building permit
- final inspection
Occupancy
Occupancy and use
- Type V-B
- existing building
- one- and two-family
Preparation
What to have ready
- The project address, and the county it is in
- What you are building, adding or changing
- Rough dimensions, or the survey or plot plan if you have one
- Any drawings, sketches or inspiration you already have
- Whether the property is residential or commercial
- Whether a permit has already been applied for
Related
Services often requested together
Coverage
Where Addition Plans is available
These are the areas with a dedicated page for this service. The service itself is available statewide.
FLORIDA PERMIT DATA
What the permit records show
Data through August 2026
- Matching permits
- 19,177
- Median declared job value
- $35,000
- Middle 50% of declared values
- $10,000–$100,000
- Permits with a declared value
- 16,681
"addition" appears in 19,177 matching permits in the Florida records we analyzed. Declared job value is the value shown on the permit application, not a contract price, and it is based on 16,681 matching permits with a declared value. How we count.
Questions
Addition Plans questions
What does addition plans involve?
It depends on the project. Tell us what you are building and you will get the scope, the documents and the likely permit path in one reply.
Are the drawings sealed?
Where a sealed set is required, the work is prepared and sealed by a Florida architect who signs them, and that signature is what the reviewing office relies on.
How do I check a Florida architect's registration?
Professional registration is a matter of public record in Florida. Check it directly with the state before you engage anyone.
Tell us what you are building
Send the project details once and you will get the scope, the drawings it needs and a price.
Prefer to talk it through? (321) 462-5592 or ask@floridaarch.com