Sunnyvale plan check and resubmittal guide

What we could verify about the Town of Sunnyvale’s permit office from government and permit portal pages, what Texas law says about plan check there, and how to answer a correction letter. Each fact links to its source.

The Town of Sunnyvale permit office

• Building Permit & Inspection Division: (972) 203-4188 (sunnyvaletx.gov, checked October 31, 2026)
• Address: 127 N. Collins Road, Sunnyvale, TX 75182 (sunnyvaletx.gov, checked October 31, 2026)
• Building department page

Links and facts checked on October 30, 2026.

Codes its letters cite

Building code named on the city’s pages: 2021 International Codes and the 2020 National Electrical Code, with amendments.

Source: sunnyvaletx.gov

Local amendments to the building code

Adopts the North Central Texas (NCTCOG) regional code amendments; adopts it with its own changes (NCTCOG 2026 survey).

Source: services1.arcgis.com

Sections the Town of Sunnyvale changes from the state code (summaries in our words; read the ordinance for the exact text):

• IRC R102.4: Referenced codes and standards are part of the code; locally adopted amendments apply to each reference.
• IRC R104.2.3.1: Flood hazard area provisions deleted; floodplain administration handled by other city departments.
• IRC R104.3.1: Flood hazard provisions deleted; floodplain provisions are addressed locally.
• IRC R106.1.4: Flood hazard provisions deleted; floodplain provisions are addressed locally.
• IRC R104.7: Amended; see the ordinance
• IRC R105.3: Item 5 on valuation of work deleted from permit application requirements.
• IRC R110.1: Use and change of occupancy text revised; certificate of occupancy requirement modified.
• IRC R110.2: Certificate issued section deleted in its entirety.
• IRC Table R301.2: Local climatic and geographic design criteria values filled in for the table.
• IRC R302.1: Exception 6 added to exterior wall requirements.
• IRC R302.2.6: Exception 6 deleted from structural independence requirements.
• IRC R309.2: One- and two-family automatic sprinkler system requirements deleted in their entirety.

The ordinance amends more sections than these.

The amendments: sunnyvaletx.gov

Sunnyvale and Dallas County

Sunnyvale is in Dallas County.

Texas rules every plan check here follows

These come from Texas law and state agencies, so they apply in Sunnyvale as well. Each links to its source.

Code for homes

For houses, Texas cities start from the International Residential Code as it stood on May 1, 2012.

Source: Texas Local Government Code § 214.212, checked October 31, 2026

Code for commercial buildings

For commercial buildings, Texas cities start from the International Building Code as it stood on May 1, 2012.

Source: Texas Local Government Code § 214.216, checked October 31, 2026

Local amendments

Each city can set its own procedures to add to, change, or remove parts of the residential code, and to run its own enforcement.

Source: Texas Local Government Code § 214.212, checked October 31, 2026

Newer code editions

Cities may also consider later code changes published after May 1, 2012, so ask your building department which edition it enforces.

Source: Texas Local Government Code § 214.212, checked October 31, 2026

What a good response to plan check corrections has

General guidance, not the Town of Sunnyvale’s own rules. Check its page before you resubmit.

• Answer every comment, in the reviewer’s order and numbering, so nothing is missed.
• Say plainly what you changed for each comment, or why no change is needed.
• Name the sheet and detail where each change is, so the reviewer can find it fast.
• Mark changes on the drawings (clouds or deltas are common) and keep sheet numbers the same.
• Send the response letter, the revised drawings and any new calculations together.

Other Texas city guides

• Town of Addison
• City of Balch Springs
• City of Cedar Hill
• City of Coppell
• City of Dallas

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