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Codes, exemptions & field inspections

Build to the adopted code. Verify every exception.

This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.

Regulatory framework

The code baseline for Dallas County.

In applicable unincorporated areas, Dallas County has adopted the 2021 International Residential Code under Local Government Code authority; the Dallas County Fire Code also governs applicable fire/life-safety work and commercial construction. County regulations cover unincorporated floodplain development, septic tanks, residential construction/inspection, subdivisions, nuisance conditions, communication facilities, and commercial buildings. City limits and municipal ETJs may require municipal permitting instead.

Inspection lane

Create an account and select Texas > Dallas County Unincorporated in MyGovernmentOnline (mgoconnect.org) for DUAS permits, including development, floodplain, residential, and OSSF-related submissions. For septic, submit the completed OSSF application with required site evaluation/design and supporting documents to DCHHS Environmental Health; after approval the county issues Authorization to Construct and inspects the installation. Pre-development meetings are held the second and fourth Tuesday monthly after application. Contact DUAS at 214-653-6565 or Environmental Health at 214-819-2115.

Minor-work playbook

Understand what may be exempt—and what is not.

Dallas County permits apply only in unincorporated areas; work inside a municipality is handled by that city. County residential construction notices apply to new residential units and additions/major renovations, with the county zoning page specifically identifying new units or additions of at least 500 square feet outside a city ETJ. No broad cosmetic-work exemption list was published; contact DUAS for project-specific applicability.

Field rule

A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.

Inspection pipeline

Keep the work visible at every release point.

  1. 1

    Request with lead time

    Create an account and select Texas > Dallas County Unincorporated in MyGovernmentOnline (mgoconnect.org) for DUAS permits, including development, floodplain, residential, and OSSF-related submissions. For septic, submit the completed OSSF application with required site evaluation/design and supporting documents to DCHHS Environmental Health; after approval the county issues Authorization to Construct and inspects the installation. Pre-development meetings are held the second and fourth Tuesday monthly after application. Contact DUAS at 214-653-6565 or Environmental Health at 214-819-2115.

  2. 2

    Preserve access

    Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.

  3. 3

    Close the record

    Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.

Contractor verification

Verify the builder before the contract is signed.

Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.

Verify contractor ↗

Planning reference

Keep the parcel rules beside the building plans.

A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.

Open planning reference ↗

Source trail

Official sources for this profile

Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.

Agency websiteOpen official source ↗Permit portalOpen official source ↗Application instructionsOpen official source ↗Fee scheduleOpen official source ↗Planning or zoning referenceOpen official source ↗Contractor license lookupOpen official source ↗

Project questions

Frequently asked questions for Dallas County

Who handles permitting for this jurisdiction?

Dallas County Department of Unincorporated Area Services (DUAS); Dallas County Health and Human Services Environmental Health; Dallas County Fire Marshal is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.

How should I begin an application?

Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact DUAS: 214-653-6565; DCHHS Environmental Health: 214-819-2115; Fire Marshal: 214-653-7970.

How long might review take?

The July 2025 Dallas County OSSF application instructs applicants to allow a minimum of 30 working days for application and planning-material review before a permit to construct is issued. Development permit timing is N/A; a complete application file remains open for one year, but no work is authorized until permits are approved and issued.

How are inspections scheduled?

Create an account and select Texas > Dallas County Unincorporated in MyGovernmentOnline (mgoconnect.org) for DUAS permits, including development, floodplain, residential, and OSSF-related submissions. For septic, submit the completed OSSF application with required site evaluation/design and supporting documents to DCHHS Environmental Health; after approval the county issues Authorization to Construct and inspects the installation. Pre-development meetings are held the second and fourth Tuesday monthly after application. Contact DUAS at 214-653-6565 or Environmental Health at 214-819-2115.

Which codes and exemptions should I review?

In applicable unincorporated areas, Dallas County has adopted the 2021 International Residential Code under Local Government Code authority; the Dallas County Fire Code also governs applicable fire/life-safety work and commercial construction. County regulations cover unincorporated floodplain development, septic tanks, residential construction/inspection, subdivisions, nuisance conditions, communication facilities, and commercial buildings. City limits and municipal ETJs may require municipal permitting instead. Dallas County permits apply only in unincorporated areas; work inside a municipality is handled by that city. County residential construction notices apply to new residential units and additions/major renovations, with the county zoning page specifically identifying new units or additions of at least 500 square feet outside a city ETJ. No broad cosmetic-work exemption list was published; contact DUAS for project-specific applicability.

Field sequencing matters

The inspector needs to see the work at the right moment.

Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.

When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.

Closeout file

Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.