When most business owners think about commercial permits, they think about the building permit — the one that covers the walls, floors, and structure. What many do not realize is that mechanical, electrical, and plumbing work each require their own separate permits in Texas, pulled by licensed contractors in each trade.

Missing an MEP permit is one of the most common compliance mistakes in commercial construction. Here is what each permit covers, who is responsible for pulling it, and how to coordinate them effectively.

What Are MEP Permits?

MEP stands for Mechanical, Electrical, and Plumbing — the three major building systems that run through every commercial facility. Each system is governed by its own code, inspected by its own inspector, and permitted through its own permit application.

In Texas, MEP permits are typically issued by the same city building department that issues the building permit, but they are separate applications with separate fees, separate plan review processes, and separate inspection schedules.

Mechanical Permits

A mechanical permit covers the installation, replacement, or modification of HVAC systems and related equipment. This includes:

• Heating and cooling equipment (rooftop units, split systems, boilers, chillers)
• Ductwork and air distribution systems
• Exhaust systems (kitchen hood exhaust, bathroom exhaust, general ventilation)
• Commercial kitchen ventilation and makeup air systems
• Refrigeration systems
• Boiler and pressure vessel installations

When Is a Mechanical Permit Required?

A mechanical permit is required any time HVAC equipment is installed, replaced, or significantly modified. This includes:

• New HVAC systems in a tenant finish-out
• Replacement of existing rooftop units
• Addition of exhaust fans or ventilation systems
• Installation of a commercial kitchen hood and exhaust system
• Modification of existing ductwork

Routine maintenance — filter changes, belt replacements, coil cleaning — does not require a permit. But replacing a compressor, adding a zone, or modifying ductwork does.

Who Pulls the Mechanical Permit?

In Texas, mechanical permits must be pulled by a licensed HVAC contractor. The contractor's license number is required on the permit application. A business owner cannot pull a mechanical permit for their own commercial space — it must be the licensed contractor performing the work.

Mechanical Code in Texas

Texas commercial projects are governed by the International Mechanical Code (IMC) as adopted and amended by the local jurisdiction. Restaurants and food service establishments have additional requirements under the International Fuel Gas Code (IFGC) and NFPA 96 (Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations).

Commercial kitchen hood systems are among the most heavily regulated mechanical installations in commercial construction. They require specific exhaust rates, makeup air systems, fire suppression integration, and clearances from combustible materials. Getting the hood design wrong is a common source of plan review corrections and failed inspections.

Electrical Permits

An electrical permit covers the installation, modification, or replacement of electrical systems and equipment. This includes:

• Electrical service upgrades (new panels, increased amperage)
• Branch circuit wiring (outlets, lighting circuits, dedicated equipment circuits)
• Lighting systems and controls
• Emergency and exit lighting
• Fire alarm systems (in some jurisdictions)
• Electric vehicle charging stations
• Signage with electrical connections
• Low-voltage systems (data, communications, security) — requirements vary by city

When Is an Electrical Permit Required?

An electrical permit is required for virtually any electrical work beyond simple fixture replacement. Common triggers include:

• New electrical service or panel upgrade
• Addition of circuits for new equipment
• Lighting layout changes in a tenant finish-out
• Installation of a new electrical panel or subpanel
• EV charging station installation
• Any work that requires opening walls to run new wiring

Who Pulls the Electrical Permit?

Electrical permits in Texas must be pulled by a licensed electrical contractor. The contractor must hold a valid Texas electrical contractor license, and the work must be performed by or under the supervision of a licensed master electrician.

Some Texas cities allow licensed journeyman electricians to pull permits for work they perform directly. Requirements vary by jurisdiction — confirm with the local building department.

Electrical Code in Texas

Texas commercial electrical work is governed by the National Electrical Code (NEC) as adopted by the local jurisdiction. Most Texas cities are on the 2020 NEC, though some have adopted the 2023 edition. Local amendments can add requirements beyond the base NEC.

Key NEC requirements for commercial projects include arc-fault circuit interrupter (AFCI) protection, ground-fault circuit interrupter (GFCI) protection in wet locations, and tamper-resistant receptacles in certain occupancies.

Plumbing Permits

A plumbing permit covers the installation, modification, or replacement of water supply, drainage, and gas piping systems. This includes:

• Water supply piping (domestic cold and hot water)
• Drain, waste, and vent (DWV) systems
• Grease interceptors and grease traps
• Natural gas and propane piping
• Backflow prevention devices
• Water heaters and booster heaters
• Restroom fixtures (toilets, lavatories, urinals)
• Commercial kitchen plumbing (sinks, dishwashers, ice machines)
• Floor drains and floor sinks

When Is a Plumbing Permit Required?

A plumbing permit is required for any new plumbing installation or modification to existing systems. Common triggers include:

• Adding or relocating plumbing fixtures
• Installing a grease interceptor
• Running new gas lines
• Installing a new water heater
• Adding a backflow preventer
• Any work that requires opening walls or floors to access existing piping

Who Pulls the Plumbing Permit?

Plumbing permits in Texas must be pulled by a licensed plumbing contractor. The contractor must hold a valid Texas plumbing contractor license issued by the Texas State Board of Plumbing Examiners (TSBPE). Work must be performed by or under the supervision of a licensed master plumber.

Plumbing Code in Texas

Texas commercial plumbing is governed by the International Plumbing Code (IPC) as adopted by the local jurisdiction, with Texas-specific amendments. The Texas State Board of Plumbing Examiners also publishes rules that apply statewide.

Grease interceptors are a particularly important plumbing requirement for restaurants and food service establishments. Most Texas cities require a grease interceptor sized to the kitchen's fixture units, and many require it to be located outside the building. Sizing and placement requirements vary by city — confirm with the local building department and the municipal utility before finalizing the design.

How MEP Permits Coordinate with the Building Permit

MEP permits are separate from the building permit but must be coordinated with it. Here is how the relationship works in practice:

Submitted together or separately — Some cities allow MEP permits to be submitted with the building permit application as a combined package. Others require separate submissions. Check with the local building department for their preferred process.

Plan review coordination — The building permit reviewer checks that the MEP systems shown on the drawings are consistent with the building layout. The MEP permit reviewers check the systems against their respective codes. Inconsistencies between the building drawings and the MEP drawings are a common source of corrections.

Inspection sequencing — MEP rough-in inspections must be completed and approved before the walls are closed. This means the MEP inspections happen during construction, not at the end. Failing to schedule rough-in inspections before drywalling is a serious problem — it can require opening walls for inspection.

Certificate of Occupancy dependency — The building department will not issue a Certificate of Occupancy until all MEP permits have received final inspections and sign-offs. A single outstanding MEP inspection can hold up your CO and delay your opening.

Common MEP Permit Mistakes

Assuming the general contractor handles it — In Texas, each licensed trade contractor is responsible for pulling their own permit. The general contractor does not pull MEP permits. Confirm with each subcontractor that their permit has been applied for before work begins.

Starting work before the permit is issued — MEP work performed without a permit is unpermitted work. Inspectors can require it to be exposed, documented, and potentially redone. Some cities issue stop-work orders and fines for unpermitted MEP work.

Missing rough-in inspections — MEP rough-in inspections must happen before walls are closed. Missing this window requires opening walls, which adds cost and delays the project.

Undersized electrical service — Restaurants, medical offices, and other high-demand uses often require more electrical service than the existing building provides. Discovering this after lease signing can require a utility upgrade that adds months to the project timeline.

Grease interceptor sizing errors — An undersized grease interceptor will fail the health department inspection. An oversized one wastes money and space. Get the sizing right in the design phase.

Coordinating MEP Permits Efficiently

The most effective way to manage MEP permits is to treat them as part of the overall permit strategy from the beginning — not as an afterthought after the building permit is submitted.

Practical steps:

• Identify all required MEP permits during the pre-design phase
• Confirm contractor licensing before executing subcontracts — an unlicensed contractor cannot pull a permit
• Coordinate MEP drawings with the architectural drawings before submission to avoid inconsistencies
• Submit MEP permits as early as possible — parallel review saves time
• Schedule rough-in inspections before closing walls — put them on the construction schedule
• Track permit status for each trade — do not assume a permit has been issued until you have confirmation

The Bottom Line

MEP permits are not optional extras — they are required components of any commercial construction project in Texas. The business owners who navigate them successfully are the ones who treat MEP permitting as a coordinated process, not a series of independent tasks.

A missed MEP permit can shut down your job site. A failed rough-in inspection can cost you weeks. Getting this right from the start isn't just good practice — it's the difference between opening on time and explaining delays to your landlord.

Request a free permit review — we'll map out every permit your project requires, identify the right licensed contractors for each trade, and build a coordination plan that keeps your project on schedule.