Research by Ivan Tchesnokov
Yes — Permit Required
All HVAC equipment installations require a mechanical/heating permit via BS&A portal or mail. Michigan LARA mechanical license + Dearborn registration required. No HERS testing in Michigan. DTE Energy for gas AND electric coordination.
Economic Development Department, 16901 Michigan Ave. Ste. 7, Dearborn MI 48126. 311 or DBNinspections@dearborn.gov. HVAC/Heating Permit Application via BS&A or mail. Michigan LARA mechanical license (michigan.gov/lara) + Dearborn registration (313-943-2015) required. No HERS testing — city inspector handles all HVAC inspections. DTE Energy (1-800-477-4747) for gas AND electric service. Homeowner permit may be available.

Dearborn MI HVAC permit rules — the basics

HVAC permits in Dearborn are applied for via the BS&A portal at dearborn.gov/resources/forms-documents/permit-applications, or by mail using the Heating Permit Application form to Economic Development Department, 16901 Michigan Ave., Ste. 7, Dearborn, MI 48126. Michigan LARA-licensed mechanical contractors must also be registered with the City of Dearborn (City Clerk, 313-943-2015). Contact 311 or DBNinspections@dearborn.gov for permit questions. Michigan does not require HERS third-party testing for HVAC permits — the Dearborn building inspector handles all mechanical inspections.

DTE Energy provides both natural gas and electricity to Dearborn — a single utility company for all energy coordination. For gas furnace or boiler replacements, contact DTE Energy Gas at dteenergy.com or 1-800-477-4747 for service capacity confirmation. For heat pump installations requiring electrical service upgrades, contact DTE Energy Electric at the same number. DTE Energy also offers rebates for high-efficiency HVAC equipment through its energy efficiency programs — check dteenergy.com before finalizing any HVAC equipment purchase in Dearborn.

Michigan's winters create genuine heating load demands — Wayne County typically experiences temperatures well below zero Fahrenheit in January and February. Heat pump systems installed in Dearborn must be cold-climate models rated to at least -13°F (−25°C) to handle Michigan winters without relying primarily on inefficient electric resistance backup. Dearborn's 1920s–1950s housing stock often has forced hot water (hydronic) heating systems — boiler replacements require specific Michigan licensing and DTE Energy gas coordination. Many older Dearborn homes also have single-pane windows that significantly affect heating loads; window replacement as a companion project to HVAC upgrades can substantially reduce the required system capacity.

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Three Dearborn HVAC scenarios

Scenario A
Furnace replacement in a 1940s Dearborn home — DTE Gas coordination
BS&A or mail: HVAC permit. Michigan LARA mechanical contractor + Dearborn registration. DTE Energy Gas (1-800-477-4747) for gas service capacity confirmation. No HERS testing — city inspector handles inspection. Plan review 5–10 business days. Pickup permit in person if building permit component. Pre-1978 home: EPA RRP if opening walls. Project cost: $4,000–$9,000.
BS&A or mail; Michigan LARA mechanical + Dearborn registration; DTE Gas coordination; no HERS; plan review 5-10 days; EPA RRP if opening walls (pre-1978); project cost $4,000–$9,000
Scenario B
Cold-climate heat pump in a Dearborn home — DTE coordination for both gas and electric
Mechanical + electrical permit via BS&A or mail. Michigan LARA mechanical + electrician + Dearborn registrations. DTE Energy Gas disconnected. DTE Energy Electric for service capacity (heat pump adds electrical load). Cold-climate heat pump rated to -13°F or lower required for Michigan winters. No HERS testing. DTE energy efficiency rebates may apply. Project cost: $10,000–$22,000.
BS&A mechanical + electrical permits; Michigan LARA mechanical + electrician + Dearborn registrations; DTE Gas disconnected; DTE Electric capacity; cold-climate HP (-13°F rated); DTE rebates; no HERS; project cost $10,000–$22,000
Scenario C
Boiler replacement in a 1920s Dearborn home with hydronic heat
Many 1920s Dearborn homes have forced hot water (hydronic/steam) heating. Boiler replacement requires HVAC permit via BS&A or mail. Michigan LARA mechanical contractor with experience in hydronic systems + Dearborn registration. DTE Energy Gas for gas service. Older Dearborn homes may have original radiators and single-pipe steam systems that require careful contractor selection — not all HVAC contractors are experienced with steam heat. EPA RRP throughout (pre-1928 home, definitely pre-1978). Project cost: $6,000–$15,000.
BS&A HVAC permit; Michigan LARA mechanical (hydronic/steam experience) + Dearborn registration; DTE Gas coordination; verify contractor has steam/hydronic experience; EPA RRP throughout; project cost $6,000–$15,000

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HVAC scopePermit process in Dearborn, MI
Equipment replacement/installationPermit required. BS&A portal or mail. Michigan LARA mechanical license + Dearborn registration.
No HERS testing (Michigan)Michigan does not require third-party HERS testing. City inspector handles all HVAC inspections.
DTE Energy (gas AND electric)Single utility for both. dteenergy.com / 1-800-477-4747. Rebates available.
Cold-climate heat pump requirement-13°F rating minimum for Michigan winters. Standard heat pumps underperform in Wayne County cold.
Hydronic/steam systems (older homes)Common in 1920s–1930s Dearborn homes. Verify contractor experience with steam/hydronic.
DTE Energy serves both gas and electricity in Dearborn — a single utility contact for all HVAC energy coordination. For heat pumps: cold-climate models rated to at least -13°F are required for Michigan winters.
BS&A permit. Michigan LARA + Dearborn registration. No HERS testing. DTE Energy (gas + electric). Cold-climate HP.
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Dearborn MI home improvement: practical guidance for homeowners and contractors

Dearborn's permit process has one distinctive step that surprises many applicants: building permits must be picked up in person at the Dearborn Administrative Center (16901 Michigan Ave.) by the homeowner, contractor, or a representative with a notarized letter of authorization. You cannot simply download or email your permit — even after online approval. Build this in-person pickup step into your project timeline. Trade permits (electrical, plumbing, HVAC) have more flexible mail-in options. For permit questions, call 311 or email DBNinspections@dearborn.gov.

Michigan's dual contractor licensing system — LARA state license plus Dearborn city registration — means two separate credential verification steps. Check the contractor's Michigan LARA license at michigan.gov/lara, and confirm their City of Dearborn registration status by calling the City Clerk's Office at (313) 943-2015. Both must be current. Michigan Residential Builders (RB) and Residential Maintenance & Alteration Contractors (RMA) have different scopes — an RMA license covers repairs and alterations to existing residential structures, while an RB license is needed for new construction and additions. Verify that the contractor's specific license classification covers your project type.

DTE Energy provides both electricity and natural gas to Dearborn — a single utility company serving both energy needs. For electrical service upgrades or gas service modifications, contact DTE Energy at dteenergy.com or 1-800-477-4747. DTE Energy's residential service scheduling typically runs 2–4 weeks for service entrance work; coordinate DTE and the city permit in parallel. DTE Energy also offers rebates for energy efficiency improvements including insulation, high-efficiency HVAC, and energy-efficient appliances — check dteenergy.com for current rebate programs before finalizing any HVAC or insulation project in Dearborn.

Dearborn's housing stock — primarily 1920s through 1950s construction with a smaller share from the 1960s–1970s — means virtually every residential property in the city predates 1978. EPA RRP lead paint procedures are the standard, not the exception, for Dearborn renovation work. Asbestos-containing materials (floor tiles, pipe insulation, ceiling textures, drywall joint compound) are also common in pre-1980 Dearborn homes. Contractors performing renovation work must hold EPA RRP certification for lead paint work. Asbestos testing before disturbing suspect materials is a best practice in Dearborn's older housing stock. These requirements apply regardless of whether the work requires a permit.

Dearborn MI permit context: Michigan LARA licensing, DTE Energy, and Motor City heritage

Dearborn is Wayne County's second-largest city, home to approximately 110,000 residents and deeply tied to Ford Motor Company — Henry Ford was born in Dearborn, and Ford's world headquarters and the iconic Ford River Rouge Complex are both located here. The city has the largest Arab American community per capita in the United States, and its dense residential neighborhoods were developed primarily in the 1920s through 1950s around the automotive industry's growth. This means the vast majority of Dearborn's housing stock predates 1978, making EPA RRP lead paint and potentially asbestos-containing materials relevant to virtually every renovation project in the city. Dearborn's winters are genuine Michigan winters — deep frost, ice, snow — and the city's building code reflects this fully.

Dearborn's permits are handled by the Economic Development Department at 16901 Michigan Ave., Suite 7, with a plan review process that typically takes 5–10 business days. Building permits must be picked up in person at the Dearborn Administrative Center by the homeowner, contractor, or a designated representative with a notarized letter of authorization. BS&A online portal handles permit applications and inspection scheduling for electrical, plumbing, and HVAC permits. Contact 311 (city services) or email DBNinspections@dearborn.gov for permit questions. The Electrical Division is at 313-943-2414 and the general response center at 313-943-2150.

Michigan contractor licensing is administered by LARA (Department of Licensing and Regulatory Affairs) Bureau of Construction Codes. Michigan requires: Residential Builders (RB) and Residential Maintenance & Alteration Contractors (RMA) for general residential work; Michigan master electrician license plus contractor registration for electrical work; Michigan plumbing license; Michigan mechanical license. Verify any contractor's active Michigan LARA license at michigan.gov/lara. Contractors must ALSO register with the City of Dearborn — contact the City Clerk's Office at (313) 943-2015 for registration information. Both the state LARA license and the Dearborn registration must be current before permits can be issued.

DTE Energy provides both electricity (Detroit Edison) and natural gas (MichCon/DTE Gas) to Dearborn — a single utility company for both services, contact at dteenergy.com or 1-800-477-4747. For service entrance changes, panel upgrades, or gas service modifications, coordinate with DTE Energy. Michigan's net energy metering law allows residential solar customers to earn retail-rate credits for solar exports to the grid for systems sized up to 150% of annual consumption. Wayne County's frost depth is approximately 42 inches — one of the deepest in this series — requiring footings to extend well below grade for all structural projects. Michigan's residential code requires ice and water shield at roof eaves due to genuine ice dam conditions in Wayne County winters.

Common questions about Dearborn MI hvac permits

Is HERS testing required for HVAC in Dearborn MI?

No. Michigan does not require HERS (Home Energy Rating System) third-party testing for HVAC permit inspections. The Dearborn building inspector handles all mechanical permit inspections. This is a significant difference from California, where HERS testing by an independent certified rater is mandatory for most HVAC permit scopes. Apply for HVAC permits via the BS&A portal at dearborn.gov/resources/forms-documents/permit-applications or mail the Heating Permit Application to 16901 Michigan Ave., Ste. 7.

What type of heat pump works in Dearborn MI winters?

Dearborn's Michigan winters regularly produce temperatures well below 0°F. Cold-climate heat pumps rated to at least -13°F (NEEP ccASHP rating, or equivalent) are required for effective operation in Wayne County's climate. Standard heat pumps rated only to about 5°F (the old "balance point" for many conventional models) will rely excessively on electric resistance backup heat during Wayne County's coldest periods, undermining the efficiency and cost savings that justify heat pump installation. Verify the cold-weather performance specifications with your HVAC contractor before purchasing any heat pump for a Dearborn installation.

Dearborn MI home improvement: the Motor City legacy and what it means for permits

Dearborn's identity is inseparable from the Ford Motor Company — Henry Ford's birthplace, Ford World Headquarters, and the River Rouge Complex all anchor this community. The auto industry drove Dearborn's residential development in the 1920s through 1950s, creating the dense, working-class neighborhoods of bungalows, Cape Cods, and Colonial Revival homes that still define the city's housing stock. This heritage means two things for home improvement projects: first, virtually every Dearborn home predates 1978, making EPA RRP and asbestos awareness standard rather than exceptional; second, Dearborn's contractor market is deep and experienced, with many Michigan LARA-licensed contractors who understand the specific challenges of the city's older housing stock.

The City of Dearborn has been modernizing its permit process through the BS&A online portal at dearborn.gov/resources/forms-documents/permit-applications, which handles application submission, fee payment, and inspection scheduling for most permit types. However, one distinctively in-person step remains: building permits must be picked up in person at the Dearborn Administrative Center (16901 Michigan Ave., Suite 7) after approval. Contractors and homeowners should factor this into project timelines — plan review typically takes 5–10 business days, followed by the in-person pickup. For trade permits (electrical, plumbing, HVAC), mail-in applications to the same address are accepted, making these more flexible than building permits. Note: The city periodically upgrades its software systems; contact 311 or DBNinspections@dearborn.gov to confirm current portal availability and requirements.

Michigan's contractor licensing through LARA (Department of Licensing and Regulatory Affairs, Bureau of Construction Codes) creates specific license types that differ from California's CSLB and New Mexico's CID systems. Key Michigan licenses for residential work: Michigan Residential Builder (RB) — required for new construction and additions to residential buildings; Michigan Residential Maintenance & Alteration Contractor (RMA) — for repairs, renovations, and alterations to existing residential structures. Both RB and RMA are issued by LARA's BCC (Bureau of Construction Codes). Trade licenses — electrical master, journeyman, plumbing, and mechanical — are issued separately and their holders must be the qualifying agent behind a registered contracting business. Verify the license type and active status of any Dearborn contractor at michigan.gov/lara before signing a contract. The contractor must also be registered with the City of Dearborn — confirm via City Clerk at (313) 943-2015.

Dearborn's Arab American community — the largest per capita of any US city — has been a central part of the city's identity for decades, and is increasingly influential in the city's home improvement and construction market. Mayor Abdullah Hammoud, the first Arab American mayor of Dearborn, has focused city government on housing quality, flood preparedness, and neighborhood investment. Dearborn has experienced recurring flooding issues from combined sewer overflows during heavy rain events — a factor relevant to basement renovation, sump pump installation, and backwater valve requirements. The city's flood preparedness resources at dearborn.gov/residents/flood-preparedness can help homeowners understand basement waterproofing permit requirements and flood mitigation options that may also be relevant for home improvement projects.

City of Dearborn — Economic Development Department, Permits Division 16901 Michigan Ave., Suite 7, Dearborn, MI 48126
Call 311 (city services) · Email: DBNinspections@dearborn.gov
Electrical Division: 313-943-2414 · Response Center: 313-943-2150
Contractor registration: City Clerk (313) 943-2015
BS&A permit portal: dearborn.gov/permits
Michigan LARA license lookup: michigan.gov/lara

DTE Energy (electric & gas): dteenergy.com · 1-800-477-4747

General guidance based on City of Dearborn Economic Development/Permits and Michigan Building Code sources as of April 2026. For a personalized report, use our permit research tool.