What ADU can you build in your Altamonte Springs backyard?
Instant zoning report — see exactly what your zoning allows: permitted ADU types, size limits, setbacks, and lot requirements for your specific property.
The quick answer
Altamonte Springs ADU rules at a glance
- Owner-occupancy
Not required — you can rent both units - Short-term rentals
Allowed with local licensing — verify with the city - Where it's allowed
Eligibility varies by zoning district — check your address to confirm yours
ADU Rules in Altamonte Springs, Florida
We've researched Altamonte Springs's ADU rules so you don't have to. Here's what matters most — the facts that determine whether your project is possible, and how much it will cost.
- No accessory dwelling unit is permitted anywhere in the city
- Only a kitchen-less, non-rental guest house is allowed in single-family districts
- An accessory unit may not be rented or occupied as a separate dwelling
Last verified: 2026-07-15
Backyard ADUs like this are being built across Altamonte Springs — here's how to do it right.
What Altamonte Springs's zoning may allow for an ADU
Altamonte Springs does not permit accessory dwelling units. The only accessory living space allowed in single-family districts is a guest house with no kitchen and no rental use — it may not be occupied as a separate, independent, or rented dwelling.
Zoning allowance
The city's single-family districts (R-1AAA, R-1AA, R-1A) allow a guest house only as a non-independent accessory use, without cooking facilities and not for rent. A full accessory dwelling unit is not a permitted use.
Size limits
No accessory dwelling unit is permitted, so there is no ADU size allowance. Guest-house dimensions follow the underlying district's accessory-structure standards.
Lot + setbacks
Setbacks, lot coverage, and minimum lot size for an accessory dwelling vary by zoning district. Confirm the exact figures with the city's planning department.
Height + coverage
Height and lot-coverage limits vary by zoning district. Confirm current limits with local planning.
Parking
Parking requirements for an accessory dwelling vary by district; typically one additional space. Confirm with local planning.
Rental / occupancy
Renting an accessory unit is not allowed — the permitted guest house is a non-rental, kitchen-less accessory space only.
Permit process
An accessory dwelling is permitted through the city's standard zoning-review and building-permit process. Contact the local planning or building department for current requirements.
Building limits and rental rules, side by side
These figures are based on the best available data for Altamonte Springs and should be confirmed with the city's planning department before you commit to a design or a rental strategy — local ordinances change and vary by parcel.
Building Limits
- Max Size:See requirements above
- Detached Allowed?Check with city
Rental Rules
Short-term rental rules vary — confirm with Altamonte Springs Planning.
Here's exactly what you'll pay — and how to avoid the fees that catch most homeowners off guard
Most homeowners spend 3–4 weeks piecing this together on their own. We've mapped the full Altamonte Springs permit process step by step — so you know exactly what's coming, and what to prepare.
Step 1: Pre-Application Zoning Check
- Where:
- Altamonte Springs Planning Department
- What to bring:
- Property address and parcel ID, preliminary site sketch, lot survey
- Timeline:
- No appointment fee — call ahead to confirm office hours
- Cost:
- No fee for initial inquiry
Step 2: Submit Permit Application
- Where:
- Altamonte Springs Planning Department — contact for portal link
- What to bring:
- Architectural plans, site plan, boundary survey, energy compliance docs
- Timeline:
- Contact planning to confirm current review timelines
- Cost:
- Contact planning for current fee schedule
Step 3: Plan Review & Revisions
- Where:
- Altamonte Springs Planning Department
- What to bring:
- Responses to any correction letters; revised drawings if required
- Timeline:
- Plan for one or more review cycles — timeline varies by submission completeness
- Cost:
- No additional fee for standard resubmittal
Step 4: Construction & Inspections
- Where:
- Altamonte Springs Building Department
- What to bring:
- Approved permit set must be on-site at all times during construction
- Timeline:
- Schedule inspections as each phase of work is completed
- Cost:
- Included in permit fee
Altamonte Springs neighborhoods where ADU permits are being filed — is your street next?
Altamonte Springs ADU — Frequently Asked Questions
These are the questions we hear most often from Altamonte Springs homeowners. If yours isn't here, our ADU Zoning Experts can answer it directly.
Can I build an ADU in Altamonte Springs, Florida?
The city's single-family districts (R-1AAA, R-1AA, R-1A) allow a guest house only as a non-independent accessory use, without cooking facilities and not for rent. A full accessory dwelling unit is not a permitted use.
What is the maximum ADU size in Altamonte Springs?
No accessory dwelling unit is permitted, so there is no ADU size allowance. Guest-house dimensions follow the underlying district's accessory-structure standards.
Do I need to be an owner-occupant to build an ADU in Altamonte Springs?
Renting an accessory unit is not allowed — the permitted guest house is a non-rental, kitchen-less accessory space only.
Can I use my Altamonte Springs ADU as an Airbnb?
Contact Altamonte Springs Planning to confirm current short-term rental rules for ADUs.
How do I get an ADU permit in Altamonte Springs?
An accessory dwelling is permitted through the city's standard zoning-review and building-permit process. Contact the local planning or building department for current requirements.
Nearby Cities — ADU Rules
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More Seminole County ADU Guides
This page provides general information based on current ordinances and publicly available data as of 2026-07-15. Zoning rules change — verify all requirements with your local planning department before making financial commitments.