City Guide · Verified 2026
Deck Construction Permits in Allen
Local Rule
City of Allen Building and Permitting
The citys own amended Section R105.2 states the exemption in its own words, slightly reworded from the standard IRC text but carrying the same limits: decks less than 200 square feet and not more than 30 inches above grade at any point need no permit. The same amended section covers sidewalks, driveways and other flatwork not more than 30 inches above adjacent grade, provided the placement does not violate other city requirements, and separately exempts water tanks up to 5,000 gallons supported directly on grade.
Source · Verified September 2026
Allen Building Department
Office: City of Allen Building and Permitting Division
Address: 305 Century Pkwy. (Allen City Hall), Allen, TX 75013
Phone: (214) 509-4130
Hours and procedures can change — call ahead to confirm.
How This Compares to Collin County
Allen's own rule is shown above (Depends on project scope). Here is the separate rule that applies at the county level, for context:
Collin County Development Services
Collin County's own guide confirms "Residential, OSSF/septic, health, and commercial permits required in unincorporated county areas" through Development Services and the CSS Portal, following the 2021 International Fire Code/Building Code adoption for commercial structures. A deck-specific citation distinct from the general residential permit category was not located in this pass.
Nearby Cities with Verified Rules
Other cities near Allen with a confirmed deck construction rule:
FAQs
Which department handles Deck Construction permits in Allen?
City of Allen Building and Permitting handles Deck Construction permits in Allen.
Is Allen different from Collin County on Deck Construction?
Yes. Allen's rule is "Depends on project scope", while Collin County in general is "Permit required". See the full breakdown of each below.
Building It Yourself? Here's What You'll Need
Popular tools and materials homeowners use for a deck construction project:
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