MEP Stamp for Mechanical, Electrical and Plumbing Plans
HVAC, electrical, plumbing, fire protection and energy drawings reviewed and sealed by engineers licensed in your state for each discipline.
- Stamped by a PE licensed in your state
- Built to IBC, IRC and local amendments
- Plan-check comments answered
An MEP stamp from engineers who check the numbers
Commercial permits, tenant improvements, restaurants, multifamily buildings and many larger homes need mechanical, electrical and plumbing drawings sealed by a Professional Engineer. An MEP stamp tells the plan reviewer that a licensed engineer has verified the load calculations, equipment sizing, circuit and pipe sizing, and code compliance shown on those sheets.
PE Engineer reviews and seals MEP drawings for projects in all 50 states, whether we prepared them or they came from a design-build contractor, an equipment supplier or another designer. Each discipline is sealed by an engineer licensed in the state where the project is located who practices in that discipline, so the mechanical, electrical and plumbing seals on your set all hold up to scrutiny.
If the review finds undersized equipment, a missing calculation or a conflict between trades, we correct it before the seal goes on. Plan-check comments on the sealed scope are answered and the sheets revised at no extra charge.
What you receive
- Discipline-by-discipline engineering review
- Load and sizing calculations
- Equipment and panel schedules checked
- Corrected MEP sheets and notes
- Sealed MEP drawings by discipline
- Energy code compliance documentation
MEP drawings we review and seal
Each discipline is reviewed against its own code and sealed by an engineer qualified in that work and licensed in your state.
Mechanical and HVAC
Heating and cooling loads, equipment selection, duct layouts, ventilation and exhaust rates, and rooftop unit schedules checked against the mechanical code and the energy code.
Electrical
Service and feeder sizing, load calculations, panel schedules, one-line diagrams, available fault current and lighting checked against the NEC as adopted by your jurisdiction.
Plumbing
Fixture counts, drainage and vent sizing, water supply sizing, water heaters, gas piping and grease interceptors checked against the plumbing code your city enforces.
Fire alarm and sprinkler
Fire alarm layouts to NFPA 72 and sprinkler drawings to NFPA 13, reviewed and sealed where your jurisdiction requires a Professional Engineer on fire protection work.
Commercial kitchen hoods
Type I and Type II hood exhaust, makeup air, duct routing and clearances reviewed against the mechanical code and NFPA 96 for restaurants and food service.
Energy compliance
Envelope, lighting and mechanical energy compliance checked against the IECC or ASHRAE 90.1, with the forms or reports your building department requires.
Your Stamped, Permit-Ready Plans Start With One Upload
Send your drawings or describe the project. A licensed engineer reviews it and sends a clear, fixed-fee proposal, often within hours.
- Free and no obligation
- Reviewed by a licensed PE
- Secure file upload
What an MEP stamp covers
MEP stands for mechanical, electrical and plumbing, the building systems that heat, cool, ventilate, power, light and supply water to a building. An MEP stamp is the seal a licensed engineer places on those drawings to certify that the systems are designed to code and that the engineer takes responsibility for them.
Each discipline is its own scope. A set may carry a mechanical seal on the M sheets, an electrical seal on the E sheets and a plumbing seal on the P sheets, sometimes from the same engineer and sometimes from different ones. Licensing rules decide which. Some states license engineers by discipline. California, for example, licenses civil, electrical and mechanical engineers separately. Other states issue a general PE license but require every engineer to seal only work within their competence. In either case, the engineer who seals your electrical sheets must be qualified in electrical design and licensed in your state.
Building departments usually ask for an MEP stamp on:
- New commercial buildings and commercial tenant improvements.
- Restaurants and other spaces with commercial kitchens.
- Multifamily, mixed-use and assembly buildings.
- Electrical services above the threshold your jurisdiction sets for engineered drawings.
- Large homes or custom homes where the city wants engineered systems.
The seal covers design, not installation. Inspectors still verify that the contractor built what the drawings show, and the installing trades still need their own licenses and permits where your jurisdiction requires them.
What the engineer checks in each discipline
An MEP review is a set of calculations, not a visual skim. These are the items we verify before any sheet is sealed.
Mechanical
Heating and cooling loads are compared with the equipment selected, outdoor air is checked against the ventilation requirements of the mechanical code, and exhaust rates, duct sizes, refrigerant line routing and equipment clearances are confirmed. Rooftop equipment is coordinated with the structural engineer for weight and anchorage.
Electrical
The load calculation is checked against the service and feeder sizes. Panel schedules are reviewed for balance and correct breaker and conductor sizes, the one-line diagram for consistency, and available fault current against equipment ratings. Grounding, bonding, emergency lighting and exit sign circuits are confirmed against the NEC.
Plumbing
Fixture counts are checked against the occupancy, drainage and vent piping is sized by fixture units, water supply is sized for demand and pressure, and gas piping is sized for the connected load. Water heaters, backflow prevention and grease interceptors are confirmed where they apply.
When a calculation is missing, the engineer prepares it. When a number does not work, the drawing is corrected before it is sealed. We also look across the disciplines for conflicts, such as a condensate line with nowhere to drain, a water heater on a circuit that cannot carry it, or ductwork routed through a rated wall without a fire damper.
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- Free and no obligation
- Reviewed by a licensed PE
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Fire protection, kitchen hoods and energy compliance
Several specialty systems sit alongside the core MEP disciplines and are often reviewed by the same team.
- Fire alarm systems. Device layouts, notification coverage, battery calculations and riser diagrams are reviewed to NFPA 72. Our fire alarm plans service can also prepare these drawings from scratch.
- Fire sprinklers. Hydraulic calculations and layouts are reviewed to NFPA 13. Some jurisdictions accept sprinkler drawings from a licensed fire sprinkler contractor or certified designer, while others require a PE seal, and we confirm which applies before quoting.
- Commercial kitchen hoods. Hood type, exhaust and makeup air, grease duct routing and clearances to combustibles are checked against the mechanical code and NFPA 96. See our kitchen hood and exhaust page for full design work.
- Energy code. Lighting power, controls, envelope and HVAC efficiency are checked against the IECC or ASHRAE 90.1, whichever path your jurisdiction allows.
Bringing these reviews together matters because the systems interact. A new hood changes the makeup air, which changes the mechanical load, which can change the electrical service. One review across all of them catches those knock-on effects before the plan checker does, and keeps the sealed sheets consistent with each other when the set goes in for review.
Getting an MEP stamp on drawings you already have
Many MEP drawings are prepared by the contractors who will install the work. Design-build HVAC, electrical and plumbing contractors often draw their own layouts, and equipment suppliers provide system drawings with their quotes. These drawings can be accurate and still need a licensed engineer’s seal before the building department will accept them.
Here is how an MEP stamp on existing drawings works:
- You send the drawings, equipment cut sheets, and any calculations or plan-check comments.
- We confirm which disciplines need a seal in your jurisdiction and send a fixed-fee quote, usually the same day.
- The engineer for each discipline reviews the sheets and returns redlines or questions.
- Corrections and missing calculations are completed by us or by your contractor.
- Each discipline is sealed and the set is returned ready to submit.
Equipment substitutions during construction are handled the same way. If a rooftop unit, panel or water heater changes after the permit is issued, we review the substitution and provide a sealed revision. For projects that need new electrical plans or full MEP design, our MEP engineering team can prepare the complete package. Turnaround depends on the size of the set and how much the review turns up, and rush service is available when an opening date is fixed.
You likely need an MEP stamp if
- You are building out a commercial space
- The project includes a commercial kitchen
- Your city requires engineered electrical plans
- A contractor drew the HVAC or plumbing layout
- Plan check asked for load or sizing calculations
- Equipment was substituted after permit
How it works, start to finish
From your first message to stamped drawings, you work directly with the engineering team.
- 1Share your projectSend the address, scope and any drawings, photos or plan-check comments. Two minutes is enough.
- 2Receive a fixed-fee proposalAn engineer reviews the scope and replies with a firm price and delivery date for your mep pe stamp drawings.
- 3Engineering and draftingWe run the calculations and prepare drawings to the codes your jurisdiction enforces, checked before sealing.
- 4Stamped set deliveredYou receive a sealed PDF set ready to submit, and we answer any plan-check comments within scope.
MEP codes and standards we review against
MEP drawings are reviewed against the edition of each code your jurisdiction has adopted, including state and local amendments:
- National Electrical Code (NEC/NFPA 70)
- International Mechanical Code (IMC) or Uniform Mechanical Code (UMC)
- International Plumbing Code (IPC) or Uniform Plumbing Code (UPC)
- International Fuel Gas Code (IFGC)
- NFPA 13 sprinklers, NFPA 72 fire alarm and NFPA 96 commercial cooking ventilation
- International Energy Conservation Code (IECC) and ASHRAE 90.1
How licensing works. Engineering drawings must be sealed by a Professional Engineer licensed in the state where your project is located. PE Engineer works with a network of state-licensed PEs, so every set is reviewed and stamped by an engineer with an active license in the state where your project is located. Their name and license number appear on the seal, exactly as your building department requires.
Related services
MEP EngineeringMechanical, electrical, plumbing and fire protection drawings, energy compliance and solar plans, designed and sealed by a licensed PE for permit.Explore MoreMechanical & HVAC DesignHeating, cooling and ventilation design with Manual J load calculations, equipment schedules and duct layouts, sealed by a licensed PE for permit.Explore More
Energy Code ComplianceREScheck, COMcheck and Title 24 energy compliance calculations for homes, additions and commercial buildings, prepared to the IECC or ASHRAE 90.1.Explore MoreFrequently asked questions
What is an MEP stamp?
It is the seal a licensed Professional Engineer places on mechanical, electrical and plumbing drawings to certify that the systems are designed to code and that the engineer takes responsibility for them. Each discipline is sealed by an engineer qualified in that work and licensed in the state where the project is located.
Does my project need MEP drawings stamped by an engineer?
Most commercial projects, tenant improvements and restaurants do. Many residential projects do not, although some jurisdictions require engineered electrical plans above a certain service size or for large homes. Send us your permit checklist or plan-check comments and we will confirm exactly which disciplines need a seal.
Can one engineer stamp mechanical, electrical and plumbing?
Sometimes. In states that license engineers by discipline, each seal must come from an engineer licensed in that discipline. In other states one engineer may seal several disciplines if they are competent in each. We assign engineers so every seal on your set meets your state’s rules.
Can you stamp MEP drawings my contractor prepared?
Yes, after an engineering review. We check the calculations and layouts, return any corrections, and seal the drawings once they meet code. Design-build contractors use this service often because it keeps their own layouts while satisfying the building department.
Do you stamp fire sprinkler and fire alarm drawings?
Yes, where the jurisdiction requires a PE seal on fire protection drawings. Some jurisdictions accept these from licensed fire protection contractors or certified designers instead. We confirm the requirement with your local rules before quoting so you only pay for what is needed, and coordinate the alarm and sprinkler sheets with the rest of the MEP set.
What if the equipment changes after the permit is issued?
Send us the new equipment data. We check it against the sealed design, including electrical, structural and energy impacts, and issue a sealed revision or letter so the inspector can approve the change without holding up the job. Substitutions that affect the structure, such as a heavier rooftop unit, are checked for support and anchorage too.
Get your free mep pe stamp proposal
Tell us where the project is and what you need. Attach any drawings, photos or plan-check comments. A licensed engineer reviews every request.
- Upload your filesPlans, sketches, photos or comments
- Get a fixed-fee proposalUsually the same day
- Receive stamped drawingsSealed by a PE licensed in your state