Bolthole Index

Hidalgo County, Texas

Zoning, building permits and septic rules in Mission, Texas

The City of Mission, Texas, in Hidalgo County, zones land itself and requires a building permit before construction starts12. The city's Planning Department handles zoning and platting, and its Building Inspections Division issues residential permits34. We could not confirm who permits septic systems inside city limits, so ask Hidalgo County Environmental Health5.

At a glance

Building permit
Required inside Mission city limits; no building should start without one2
Zoning
Yes, the City of Mission zones land, with 18 land-use categories16
Building codes
2024 international codes and the 2023 National Electrical Code for permitted residential work7
Certificate of occupancy
Required before use; $50 fee, issued in a 24 to 48 hour window8
Septic
Not confirmed for Mission addresses; ask Hidalgo County Environmental Health5
RV, tiny home, ADU rules
Not confirmed; depend on the zoning district3
Owner-builder
Not confirmed for city permits; Texas exempts owners from state electrician and plumbing licensing on their own home9

Who to call

Planning & zoning

City of Mission Planning Department

Zoning, rezoning and subdivision platting inside Mission city limits (Mission City Hall phone and address)

956-580-8650

1201 E 8 th Street Mission, TX 78572

Building permits

City of Mission Building Inspections Division

Residential building permits, plan review and required inspections inside Mission city limits

(956) 580-8691

Septic permits

Hidalgo County Health & Human Services – Environmental Health (OSSF)

Septic (OSSF) permit applications for unincorporated Hidalgo County; ask whether a Mission address falls under this office

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

Going off-grid in Mission means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Mission, Texas?

Yes. Inside Mission city limits, the City's residential permit application states that no building should commence without a building permit24. Residential permits must comply with the 2024 international building codes and the 2023 National Electrical Code, plus state law, local ordinances and setbacks7.

Two conditions catch buyers out. The City cannot issue construction permits on property that is not zoned for the single-family or duplex project, and it cannot issue them on property that is not platted under the City's subdivision ordinance2. Do not assume an older lot is grandfathered; check zoning and plat status first.

Who issues building permits in Mission, and how do you reach them?

The City of Mission issues building permits through its Building Inspections Division, not Hidalgo County4. The application says to allow 3 to 5 business days to pick up a permit, and it will not accept an incomplete or partial submittal10. Submittals need a 2024 REScheck report, a Manual J report, an engineered sealed windstorm plan and a full plan set10.

The City publishes a $50 certificate-of-occupancy fee and a $50 per-trade reinspection fee, but we could not confirm a full building-permit fee schedule, so ask the division for the fee on your project11. The general contractor or project manager requests each inspection, with reviewed blueprints on site12.

Does Mission, Texas have zoning, and what does it mean for RVs and tiny homes?

Yes. The City of Mission adopts its own Zoning Ordinance, and its Planning Department describes 18 land-use categories from agricultural and single-family residential to heavy industrial16. Uses are permitted, conditional or prohibited, and a conditional use needs City approval at a public hearing1.

We could not confirm Mission's rules on RV living, tiny homes, manufactured homes, accessory dwellings, minimum lot size, setbacks or building height, because they depend on the zoning district. Ask the Planning Department for the district of your parcel and its use table before you buy3. Hidalgo County's no-zoning answer covers only unincorporated land and does not apply inside the city13.

How do septic permits work inside Mission, Texas?

We could not confirm who permits septic systems for addresses inside Mission city limits. Hidalgo County's septic order states that it applies to the county except areas within the boundaries of any municipality14. Mission also requires proposed subdivision lots to have water and sanitary sewer service, so many city lots connect to sewer instead of a septic tank15.

If a parcel is not on sewer, call Hidalgo County Environmental Health and the Mission Planning Department before you plan a septic system53. Texas requires a permit for an OSSF unless a narrow exemption applies, such as the 10-acre rule for a single-family dwelling on a tract of at least 10 acres16.

Building a home in Mission: the steps, in order

  1. Confirm the parcel is inside Mission city limits and find its zoning district with the Planning Department3.
  2. Confirm the lot is platted under the City's subdivision ordinance; the City cannot issue construction permits otherwise17.
  3. Settle water, sewer or septic with the City and Hidalgo County Environmental Health155.
  4. Submit a complete residential permit package to the Building Inspections Division10.
  5. Request each required inspection through your general contractor12.
  6. Pay for and receive the certificate of occupancy before anyone uses the building8.

What stays with Hidalgo County, and what to check before you buy in Mission

Land outside Mission city limits follows Hidalgo County's rules instead; see the Hidalgo County page for unincorporated land. Hidalgo County's property tax picture is county-level: its effective property tax rate is about 1.8%18.

A driveway onto a state highway needs a TxDOT driveway permit on Form 105819. Mission's residential application also has a TxDOT permit line, so ask the Building Inspections Division whether your frontage needs one4. For commercial projects in a flood plain, the City asks for flood elevation certificates except in flood zone C20.

Watch-outs

  • Do not assume a lot is grandfathered: the City cannot issue construction permits if the property is not zoned for single-family or duplex construction or not platted under the City's subdivision ordinance2.
  • We could not confirm Mission's septic authority, private-well rules, owner-builder rules or short-term-rental rules inside city limits, so call the Planning Department and Hidalgo County Environmental Health before relying on county or state defaults35.
  • Hidalgo County's rules on building permits and septic apply to land outside incorporated municipalities, so county pages and forms may not match a Mission address14.

Sources

  1. Planning Department | Mission, TX (Mission), quoted and re-checked
  2. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  3. City of Mission Planning Department (missiontexas.us)
  4. City of Mission Building Inspections Division (missiontexas.us)
  5. Hidalgo County Health & Human Services – Environmental Health (OSSF) (hidalgocounty.us)
  6. Planning Department | Mission, TX (Mission), quoted and re-checked
  7. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  8. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  9. Exemptions to Electrician Licensing (Texas statewide rule), quoted and re-checked
  10. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  11. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  12. Residential Permit Application and Submittal Checklist (Mission), quoted and re-checked
  13. Fair Housing Activity Statement – Texas, quoted and re-checked
  14. Hidalgo County Permitting Procedures, quoted and re-checked
  15. Planning Department | Mission, TX (Mission), quoted and re-checked
  16. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  17. Planning Department | Mission, TX (Mission), quoted and re-checked
  18. Effective property tax rate: Bolthole Index county data
  19. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  20. Commercial Permit Application and Submittal Checklist (Mission), quoted and re-checked

Written October 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Mission

Mission’s own rules

  • Building permitRequired

    Residential building work inside Mission city limits.

    • The City cannot issue construction permits if the property is not zoned for the applicable single-family or duplex construction.
    • The City cannot issue construction permits if the property is not platted under the City's subdivision ordinance.
    “NO BUILDING SHOULD COMMENCE WITHOUT A BUILDING PERMIT.”
  • Building code adoptedAdopted (with conditions)

    Residential construction requiring a Mission building permit.

    • The residential application states that construction must comply with listed 2024 international codes, the 2023 National Electrical Code, state law, local ordinances, and setback requirements.

    International Building Code edition: 2024 · National Electrical Code edition: 2023

    “SPECIAL CONDITIONS: Must comply with all 2024 IBC, IRC, IFC, IPC, IMC, IFGG, IECC, ISPSC, IPMC, 2023 NEC Code Requirements, State Law, Local Ordinances & Setback Requirements”
  • InspectionsRequired

    Residential construction requiring a Mission building permit.

    • The general contractor or project manager must request listed City inspections.
    • Reviewed blueprints must be on-site for all inspections.
    “It is the responsibility of the general contractor and/or project manager to request of the City the following required inspections at (956) 584-5161 (reviewed blue prints must be on-site for ALL inspections):”
  • Certificate of occupancyRequired

    Residential improvements covered by Mission's residential permit application.

    • Improvements may not be used until the certificate is issued.
    • The application states issuance follows a $50 payment and request, with a 24-to-48-hour window.

    certificate of occupancy fee: 50 USD · issuance window: 24 to 48 hours (Upon payment and request.)

    “It is understood that the improvements shall be not be used until Certificate of Occupancy has been issued.”
  • Local zoningPresent (with conditions)

    Land inside Mission city limits, Texas.

    • Uses are categorized as permitted, conditional, or prohibited; a conditional use requires City approval in public hearings.
    “The Planning Department guides the orderly development of the city using several primary ordinances, the Subdivision Ordinance, the Zoning Ordinance, the Off-Street Parking Ordinance, the Landscaping Code, and the Sign Ordinance.”
  • Zoning districtsPublished (with conditions)

    Zoning districts inside Mission city limits.

    • The City describes 18 land-use categories, including agricultural, single-family residential, general business, and heavy industrial.

    land use categories: 18

    “Currently, the city has 18 land use categories ranging from agricultural, single-family residential, and general business to heavy industrial.”
  • Mandatory utility hookupWater and sewer (with conditions)

    Proposed subdivision lots inside Mission city limits.

    • The statement concerns proposed lots during subdivision planning; it does not provide a distance or availability exception.
    “The Planning Department makes sure that all proposed lots will have paved access and have water and sanitary sewer service.”
  • Subdividing landRegulated (with conditions)

    Subdivision of raw land for residential or commercial use inside Mission city limits.

    • The Planning Department says proposed lots must have paved access, water service, sanitary sewer service, and fire hydrants during subdivision planning.
    • The residential permit application states construction permits cannot issue unless the property is platted under the City subdivision ordinance.
    “division of raw land for residential or commercial use”
  • Driveway accessLimited

    Commercial development driveways inside Mission city limits.

    • The commercial permit submittal checklist requires driveway/site-triangle clear zones and a five-foot sidewalk along each street frontage.

    sidewalk width: 5 feet (Required along each street frontage for the cited commercial permit checklist.)

    “Clear zones for driveways/site triangle 5-foot sidewalk required along each street Frontage”
  • Building in a floodplainLimited

    Commercial projects located in a flood plain inside Mission city limits.

    • No flood elevation certificate is required by this checklist when the project is in flood zone C.
    • The application requires certificates before construction showing proposed finished flood elevation and after construction showing actual finished floor elevations.
    “Flood elevation certificate if project is located in flood plain, except if in flood zone “C”.”
  • Permit feesPublished (with conditions)

    Residential permits and certificates of occupancy inside Mission city limits.

    • A $50 reinspection fee per trade is due before reinspection.
    • The cited material publishes a certificate-of-occupancy fee but not a complete building-permit fee schedule.

    certificate of occupancy fee: 50 USD (Payment and request required.) · reinspection fee: per 50 USD (Per trade; due prior to reinspection.)

    “ISSUANCE OF CERTIFICATE OF OCCUPANCY IS UPON $50 PAYMENT AND REQUEST WITH A 24 TO 48 HOUR WINDOW”
  • Permit processPublished (with conditions)

    Residential building permits inside Mission city limits.

    • An incomplete or partial submittal will not be accepted.
    • The application requires a REScheck Compliance Report, Manual J report, engineered sealed Windstorm Plan, and complete plans.
    • Residential permits require zoning and platting compliance.

    stated permit pickup time: 3 to 5 business days (The form directs applicants to allow this time.)

    “UNDER NO CIRCUMSTANCES WILL AN INCOMPLETE [...] SUBMITTAL BE ACCEPTED.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Mission or Hidalgo County directly.

  • Owner-builder exemption — Owner-built residential construction inside Mission city limits.
  • Minimum dwelling size — Principal dwellings inside Mission city limits.
  • Minimum lot size — Residential lots inside Mission city limits.
  • Setbacks — Residential structures inside Mission city limits.
  • Lot coverage — Residential lots inside Mission city limits.
13 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Mission publishes no rule on the point, not that none exists. Hidalgo County’s page lists the county offices to call.

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