Alton, Texas Building Permit Guide

The City of Alton’s Building Permits and Inspections division, part of the Planning Department at 509 S. Alton Blvd., reviews plans and issues building, electrical, plumbing and mechanical permits for property inside the city limits; its permit rules do not reach the extraterritorial jurisdiction. Applications go in on the City’s Building Project Application, each inspection costs $40 within the permit fee, and inspections are requested on 956-432-0771.

What needs a permit in Alton?

Section 2.11 of the Unified Development Code (UDC) requires a permit before anyone builds, enlarges, alters, repairs, moves, demolishes, roofs or re-roofs a building or structure, or changes its occupancy. The Building Project Application lists the classes and job types the City handles:

A new house must have at least 900 sq ft of living area.

Who issues permits in Alton and its ETJ?

The Building Permits and Inspections division enforces the City’s building, zoning, fire, health and sanitation codes on homes and commercial buildings and provides plan review and construction inspections. The Building Official evaluates every building permit against the UDC, the Building Code, the Fire Code, zoning, plats and site plans.

The UDC’s building permit and certificate of occupancy sections apply to property inside the city limits and not to the ETJ. For land outside the city limits the City’s application asks for a Letter of Compliance from Hidalgo County.

Applications and forms

All projects start on the Building Project Application, which records the contractor, the owner or approved agent, the lot and setbacks, the living and total square footage, impervious cover and the project valuation, and lets you tick the building, electrical, plumbing and mechanical permits you need. If the applicant is not the owner, attach a contract or notarised agreement authorising the work.

• Letters of compliance – from Hidalgo County for property outside the city limits, and from Sharyland Water Supply Corporation for a new water meter.
• Planning applications – rezoning, conditional use permit, variance, address application and trip generation worksheet, all on the Building Permits & Inspections page.
• Electrical Hook-up Application – filed online with the City.
• Commercial projects – the City’s separate-contracting packet, steps and minimum standards and specifications, which all commercial construction must meet.

Subcontractors for mechanical, electrical and plumbing work must hold Texas licences, be bonded, register with the City and pull their own permits.

Alton permit fees

The Building Project Application lists the City’s basic fees. New building permits are priced on the project valuation; the application does not print the valuation table.

Builders also need a solid waste (roll-off) agreement with the City’s Public Works Department before work starts.

Trade permits, codes and fire review

Each electrical, plumbing and mechanical permit is its own permit, pulled by the licensed, City-registered subcontractor. Ordinance 2021-13-0914 adopted the 2021 International Residential, Building, Plumbing, Mechanical, Energy Conservation and Fire Codes. The application cites the 2017 National Electrical Code, while the City’s residential and commercial checklists cite the 2020 edition.

Any building with three or more apartments under one roof or attached needs a fire sprinkler system, installed by a licensed company, and sprinkler plans go to the City for Fire Marshal review. The Fire Department (956-432-0740) also checks exits, emergency lighting, fire alarms, kitchen hoods, fire lanes, hydrants and Knox boxes on commercial jobs.

Documents and plan sets

Plans must carry the legal description and the owner, contractor and designer details or they will not be accepted, and homes must be designed for a 130 mph wind speed. A food business also needs grease trap approval from the McAllen Pre-Treatment Department (956-681-1760) and a health permit from the Hidalgo County Health Department (956-383-0111) before its business licence.

How to get an Alton building permit

Alton inspections

Request inspections from the building division on 956-432-0771. On a new house the first visit is the setback check once string lines are on the lot, followed by underground plumbing, foundation steel with pre-treatment, framing with the plumbing, electrical and mechanical rough-ins and poly seal, insulation, infiltration, driveway, sidewalk, sewer and a final covering all trades. A temporary pole, working clearance or final release needs the account or ESID number from the power company.

A same-day inspection called in after 3 p.m. is charged as after-hours ($75), and a repeat inspection for the same violation costs $30 more each time. The certificate of occupancy is issued only after the plat is recorded, public improvements are accepted and the Building Official finds the building matches the approved permit.

Local Alton details

Elevation: every finished floor needs a minimum height of 18 inches over the top of curb, street crown or base flood elevation. In flood Zone A, a Texas engineer or surveyor must set the base flood elevation on an elevation certificate.

Lots and parking: houses need four off-street parking spaces with a concrete driveway connected to the street, and a 20-ft setback to a garage door. A 4-ft ADA sidewalk is required 1 ft inside the property line along every street frontage.

Site upkeep: post the address as soon as dirt moves, keep a portable restroom on every job, and finish with a fully sodded front yard and at least one shade tree of 2-inch caliper.

Commercial sites: a site over 1 acre needs a storm water management plan and a TCEQ notice of intent, and billboards, childcare, cell towers and on-premise alcohol sales need a conditional use permit.

Model homes: developers may build up to four model homes before the plat is recorded once off-site and drainage improvements are accepted, but cannot sell or occupy them until the phase’s public improvements are complete.

Texas building code

Texas has no single statewide building code: state law makes the International Residential Code the base code for homes in cities and the International Building Code the base for commercial buildings, with each city choosing the edition and its own amendments, while the National Electrical Code and the energy code apply statewide. Outside city limits most counties issue no building permits for homes. Texas building code rules

Alton official resources

• Alton Building Permits & Inspections
• Alton Planning Department
• Building Project Application (PDF)
• Residential construction checklist (PDF)
• Commercial checklist (PDF)
• Unified Development Code, Ord. 2025-09-0708 (PDF)

Alton permit FAQs

Who issues building permits in Alton, TX?

The City’s Building Permits and Inspections division in the Planning Department at 509 S. Alton Blvd.

Does Alton issue building permits in its ETJ?

No. The UDC’s building permit section applies inside the city limits only; for land outside them the City asks for a Hidalgo County letter of compliance.

How much are Alton permit fees?

New buildings are priced on valuation; additions and remodels are $50 plus $0.10 per sq ft, with a $30 application fee and $40 per inspection included.

Do I need a fence permit in Alton?

Yes. Fence and irrigation permits are pulled separately from the building permit.

How long is an Alton building permit valid?

It becomes invalid if work has not started within 180 days of issue.

How do I request an inspection?

Call the building division on 956-432-0771; same-day requests after 3 p.m. cost $75.

Simplify Alton permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Texas. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Alton permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.