ADU Permit Online Portal Guide in Plano, Texas
Everything you need to apply for a adu permit in Plano, Texas — documents, fees, steps, and a downloadable submission packet.
Key Facts
- Permit required
- Yes
- Submission method
- Online
- Typical fee range
- $3,900 – $12,375
- Review time
- Varies by jurisdiction
- Inspections
- 6 inspections required
City of Plano Planning Department
Verified7-step online submission process — account registration required[1][2]
Open PortalPortal steps may change without notice. Always confirm the current process at Plano's online portal.
Avoid rejections — generate a submission-ready packet
Get a personalized ADU permit packet for Plano, Texas — tailored to your project details.
- Required forms: Building Permit Application, and more
- Pre-filled templates: Permit Cover Sheet
- Fee breakdown: $1,300–$7,500 estimated total
- Step-by-step City of Plano Planning Department portal submission guide
- Inspection prep checklist (6 items)
- Personalized for your specific project details
Free to preview · Pro to download
Required Documents
Plano requires the following documents for this permit application.
Building Permit Application
Completed City of Plano building permit application with complete project description, property owner contact information, and construction cost estimates
Architectural Drawings
Complete architectural plans signed by a licensed Texas architect, including floor plans, elevations, sections, and construction details with compliance notes
Site Plan
Site plan showing property boundaries, dimensions, building footprint, setbacks, parking layout, access routes, and existing utilities
Zoning Verification Letter
Zoning verification letter from Plano Planning confirming property zoning district and ADU eligibility under current zoning ordinance
Structural Engineering Plans
Structural engineering plans and calculations by a licensed Texas professional engineer for foundation, framing, and load-bearing elements
Mechanical and Utility Plans
Plans showing water supply, sewer, electrical, gas connections and separate metering for water, electric, and gas services to ADU
Proof of Property Ownership
Current property deed or title commitment showing applicant ownership of subject property
Fees and Timeline
Fee Breakdown
| Fee | Range | Confidence |
|---|---|---|
| ADU Permit Fee | $2,600 – $7,500 | Verified |
| Plan Review Fee | $1,300 – $4,875 | Verified |
Inspections Required
Foundation and footing inspection per Texas Building Code
Foundation and footing inspection per Texas Building Code
Framing and structural member verification
Framing and structural member verification
Electrical rough-in and separate service panel inspection
Electrical rough-in and separate service panel inspection
Plumbing rough-in and fixture installation inspection
Plumbing rough-in and fixture installation inspection
Mechanical systems and HVAC installation inspection
Mechanical systems and HVAC installation inspection
Final inspection and Certificate of Occupancy
Final inspection and Certificate of Occupancy
Authority Sources
Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Frequently Asked Questions
- Do I need a adu permit in Plano?
- Yes. Plano requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.
- How long does adu permit approval take in Plano?
- Processing times in Plano vary depending on project complexity and current review volume. The process involves 7 steps. Contact Plano Development Services for current timelines.
- What documents are required for a adu permit in Plano?
- Plano requires 7 documents including Building Permit Application, Architectural Drawings, Site Plan, Zoning Verification Letter, and others. See the full list above for details.
- What happens if I build without a adu permit in Plano?
- Building without a permit in Plano can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.
- Can PermitMagic help prepare my adu permit submission in Plano?
- Yes. PermitMagic generates a submission-ready packet tailored to Plano's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.
- How much does a adu permit cost in Plano?
- ADU permit fees in Plano typically range from $3,900 to $12,375, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Plano.
Related Permits
Other permits in Plano
ADU permits in nearby cities
Ready to apply? Build your submission packet.
Answer a few project questions and get a adu permit packet for Plano, Texas — with every document, form, and fee organized for submission.
Build My Permit PacketFree to preview · Pro to download