Maryland home permit planning notes
County permitting is often detailed. Stormwater, critical areas, historic districts, electrical licensing, and deck inspections are common issues.
What to verify locally
- Whether your property is inside city limits or unincorporated county territory
- Which office handles zoning approval versus building permits
- Whether trade permits must be pulled by licensed contractors
- Whether HOA, historic, coastal, floodplain, wildfire, or utility approval applies
Local guides in Maryland
Baltimore Residential Permit Guide
Baltimore building permits are required before construction, alteration, repair, rehabilitation, demolition, moving structures, changing use, installing regulated equipment, grading, excavating, or certain historic work.
Baltimore, MarylandBaltimore Fence, Pool Barrier, and Historic Permit Guide
Baltimore fence rules address property-line location, height, written neighbor agreements, pool barriers, historic exterior permits, and grade approval near streets or alleys.
Baltimore, MarylandBaltimore Permit Exempt Work and Stormwater Guide
Baltimore lists ordinary repairs and some one- and two-family work as permit-exempt, but stormwater, grading, historic, zoning, and code limits can still control the project.
Montgomery County, MarylandMontgomery County Maryland Deck Permit Guide
Montgomery County requires a building permit for all decks regardless of height above grade, with added electrical permit review for deck lighting, hot tubs, and spas.
Montgomery County, MarylandMontgomery County Maryland Shed Permit Guide
Montgomery County requires a building permit and zoning review before installing, moving, or constructing any shed, with structural review depending on shed size and design.
Montgomery County, MarylandMontgomery County Maryland Residential Solar Permit Guide
Montgomery County residential solar projects generally require both a building permit for panel attachment and an electrical permit for connection to the home's electrical service.
Howard County, MarylandHoward County Maryland Deck and Shed Permit Guide
Howard County requires permits for most decks and larger sheds, with clear inspection expectations for deck footings, final deck details, and shed size thresholds.
Howard County, MarylandHoward County Maryland EV Charger, Driveway, and Trade Permit Guide
Howard County residential EV chargers usually start with an electrical permit, while driveway footprint changes need a driveway permit and trade permits are handled through county licensing and permit offices.
Baltimore, MarylandBaltimore, Maryland ADU and Garage Conversion Permit Guide
Homeowners in Baltimore, Maryland, planning an accessory dwelling unit, garage apartment, basement apartment, or converted living space should confirm zoning, occupancy, utility, parking, and building-permit requirements before design work goes too far.
Baltimore, MarylandBaltimore, Maryland Pool Spa and Barrier Permit Guide
Pool and spa projects in Baltimore, Maryland, should be checked for building permits, zoning setbacks, electrical bonding, drainage, alarms, gates, and barrier inspections before excavation or delivery.
Baltimore, MarylandBaltimore, Maryland Roof Window and Exterior Permit Guide
Roof replacement, window replacement, siding, exterior doors, structural repairs, and weatherproofing work in Baltimore, Maryland, should be checked for permit, historic, energy, wind, and inspection requirements.
Baltimore, MarylandBaltimore, Maryland Kitchen Bath and Basement Remodel Permit Guide
Remodels in Baltimore, Maryland, should be checked for building, electrical, plumbing, mechanical, insulation, egress, waterproofing, and final inspection requirements before walls are closed.
Baltimore, MarylandBaltimore, Maryland Solar EV Charger and Generator Permit Guide
Homeowners in Baltimore, Maryland, planning solar panels, battery storage, EV chargers, panel upgrades, or standby generators should coordinate electrical permits, utility requirements, equipment placement, and inspections.
Baltimore, MarylandBaltimore, Maryland Driveway Fence Shed and Site Permit Guide
Homeowners in Baltimore, Maryland, should check zoning, right-of-way, drainage, easements, setbacks, fence height, accessory structures, and inspections before building outside the house footprint.
Baltimore, MarylandBaltimore, Maryland Addition Deck Porch and Patio Cover Permit Guide
Additions, decks, porches, balconies, and patio covers in Baltimore, Maryland, should be checked for zoning placement, structural plans, footings, ledger connections, stairs, guards, roof loads, and staged inspections.
Baltimore, MarylandBaltimore, Maryland Electrical Panel Circuit and Rewiring Permit Guide
Panel replacements, service upgrades, new circuits, whole-home rewiring, subpanels, outlets, lighting, and dedicated appliance wiring in Baltimore, Maryland, should be coordinated with electrical permits, utility requirements, and inspections.
Baltimore, MarylandBaltimore, Maryland Plumbing Water Heater Repipe and Sewer Permit Guide
Water heaters, repipes, fixture relocations, drain and vent changes, sewer laterals, backflow devices, and gas or water service work in Baltimore, Maryland, should be checked for plumbing permits and inspection hold points.
Baltimore, MarylandBaltimore, Maryland HVAC Heat Pump Gas and Ventilation Permit Guide
Furnaces, heat pumps, air conditioners, mini-splits, ductwork, gas piping, range hoods, bath fans, and other ventilation work in Baltimore, Maryland, should be checked for mechanical, electrical, plumbing, and fuel-gas permits.
Baltimore, MarylandBaltimore, Maryland Foundation Retaining Wall Grading and Drainage Permit Guide
Foundation repairs, retaining walls, excavation, fill, waterproofing, grading, drainage systems, and slope work in Baltimore, Maryland, should be checked for structural, zoning, stormwater, floodplain, and site inspections.
Baltimore, MarylandBaltimore, Maryland Demolition Structural Wall Fireplace and Chimney Permit Guide
Interior demolition, load-bearing wall changes, chimney or fireplace work, structural openings, and full-structure removal in Baltimore, Maryland, should be checked for building, trade, utility, environmental, and inspection requirements.
Montgomery County, MarylandMontgomery County, Maryland ADU and Garage Conversion Permit Guide
Homeowners in Montgomery County, Maryland, planning an accessory dwelling unit, garage apartment, basement apartment, or converted living space should confirm zoning, occupancy, utility, parking, and building-permit requirements before design work goes too far.
Montgomery County, MarylandMontgomery County, Maryland Pool Spa and Barrier Permit Guide
Pool and spa projects in Montgomery County, Maryland, should be checked for building permits, zoning setbacks, electrical bonding, drainage, alarms, gates, and barrier inspections before excavation or delivery.
Montgomery County, MarylandMontgomery County, Maryland Roof Window and Exterior Permit Guide
Roof replacement, window replacement, siding, exterior doors, structural repairs, and weatherproofing work in Montgomery County, Maryland, should be checked for permit, historic, energy, wind, and inspection requirements.
Montgomery County, MarylandMontgomery County, Maryland Kitchen Bath and Basement Remodel Permit Guide
Remodels in Montgomery County, Maryland, should be checked for building, electrical, plumbing, mechanical, insulation, egress, waterproofing, and final inspection requirements before walls are closed.
Montgomery County, MarylandMontgomery County, Maryland Solar EV Charger and Generator Permit Guide
Homeowners in Montgomery County, Maryland, planning solar panels, battery storage, EV chargers, panel upgrades, or standby generators should coordinate electrical permits, utility requirements, equipment placement, and inspections.
Montgomery County, MarylandMontgomery County, Maryland Driveway Fence Shed and Site Permit Guide
Homeowners in Montgomery County, Maryland, should check zoning, right-of-way, drainage, easements, setbacks, fence height, accessory structures, and inspections before building outside the house footprint.
Montgomery County, MarylandMontgomery County, Maryland Addition Deck Porch and Patio Cover Permit Guide
Additions, decks, porches, balconies, and patio covers in Montgomery County, Maryland, should be checked for zoning placement, structural plans, footings, ledger connections, stairs, guards, roof loads, and staged inspections.
Montgomery County, MarylandMontgomery County, Maryland Electrical Panel Circuit and Rewiring Permit Guide
Panel replacements, service upgrades, new circuits, whole-home rewiring, subpanels, outlets, lighting, and dedicated appliance wiring in Montgomery County, Maryland, should be coordinated with electrical permits, utility requirements, and inspections.
Montgomery County, MarylandMontgomery County, Maryland Plumbing Water Heater Repipe and Sewer Permit Guide
Water heaters, repipes, fixture relocations, drain and vent changes, sewer laterals, backflow devices, and gas or water service work in Montgomery County, Maryland, should be checked for plumbing permits and inspection hold points.
Montgomery County, MarylandMontgomery County, Maryland HVAC Heat Pump Gas and Ventilation Permit Guide
Furnaces, heat pumps, air conditioners, mini-splits, ductwork, gas piping, range hoods, bath fans, and other ventilation work in Montgomery County, Maryland, should be checked for mechanical, electrical, plumbing, and fuel-gas permits.
Montgomery County, MarylandMontgomery County, Maryland Foundation Retaining Wall Grading and Drainage Permit Guide
Foundation repairs, retaining walls, excavation, fill, waterproofing, grading, drainage systems, and slope work in Montgomery County, Maryland, should be checked for structural, zoning, stormwater, floodplain, and site inspections.
Montgomery County, MarylandMontgomery County, Maryland Demolition Structural Wall Fireplace and Chimney Permit Guide
Interior demolition, load-bearing wall changes, chimney or fireplace work, structural openings, and full-structure removal in Montgomery County, Maryland, should be checked for building, trade, utility, environmental, and inspection requirements.
Howard County, MarylandHoward County, Maryland ADU and Garage Conversion Permit Guide
Homeowners in Howard County, Maryland, planning an accessory dwelling unit, garage apartment, basement apartment, or converted living space should confirm zoning, occupancy, utility, parking, and building-permit requirements before design work goes too far.
Howard County, MarylandHoward County, Maryland Pool Spa and Barrier Permit Guide
Pool and spa projects in Howard County, Maryland, should be checked for building permits, zoning setbacks, electrical bonding, drainage, alarms, gates, and barrier inspections before excavation or delivery.
Howard County, MarylandHoward County, Maryland Roof Window and Exterior Permit Guide
Roof replacement, window replacement, siding, exterior doors, structural repairs, and weatherproofing work in Howard County, Maryland, should be checked for permit, historic, energy, wind, and inspection requirements.
Howard County, MarylandHoward County, Maryland Kitchen Bath and Basement Remodel Permit Guide
Remodels in Howard County, Maryland, should be checked for building, electrical, plumbing, mechanical, insulation, egress, waterproofing, and final inspection requirements before walls are closed.
Howard County, MarylandHoward County, Maryland Solar EV Charger and Generator Permit Guide
Homeowners in Howard County, Maryland, planning solar panels, battery storage, EV chargers, panel upgrades, or standby generators should coordinate electrical permits, utility requirements, equipment placement, and inspections.
Howard County, MarylandHoward County, Maryland Driveway Fence Shed and Site Permit Guide
Homeowners in Howard County, Maryland, should check zoning, right-of-way, drainage, easements, setbacks, fence height, accessory structures, and inspections before building outside the house footprint.
Howard County, MarylandHoward County, Maryland Addition Deck Porch and Patio Cover Permit Guide
Additions, decks, porches, balconies, and patio covers in Howard County, Maryland, should be checked for zoning placement, structural plans, footings, ledger connections, stairs, guards, roof loads, and staged inspections.
Howard County, MarylandHoward County, Maryland Electrical Panel Circuit and Rewiring Permit Guide
Panel replacements, service upgrades, new circuits, whole-home rewiring, subpanels, outlets, lighting, and dedicated appliance wiring in Howard County, Maryland, should be coordinated with electrical permits, utility requirements, and inspections.
Howard County, MarylandHoward County, Maryland Plumbing Water Heater Repipe and Sewer Permit Guide
Water heaters, repipes, fixture relocations, drain and vent changes, sewer laterals, backflow devices, and gas or water service work in Howard County, Maryland, should be checked for plumbing permits and inspection hold points.
Howard County, MarylandHoward County, Maryland HVAC Heat Pump Gas and Ventilation Permit Guide
Furnaces, heat pumps, air conditioners, mini-splits, ductwork, gas piping, range hoods, bath fans, and other ventilation work in Howard County, Maryland, should be checked for mechanical, electrical, plumbing, and fuel-gas permits.
Howard County, MarylandHoward County, Maryland Foundation Retaining Wall Grading and Drainage Permit Guide
Foundation repairs, retaining walls, excavation, fill, waterproofing, grading, drainage systems, and slope work in Howard County, Maryland, should be checked for structural, zoning, stormwater, floodplain, and site inspections.
Howard County, MarylandHoward County, Maryland Demolition Structural Wall Fireplace and Chimney Permit Guide
Interior demolition, load-bearing wall changes, chimney or fireplace work, structural openings, and full-structure removal in Howard County, Maryland, should be checked for building, trade, utility, environmental, and inspection requirements.
Projects to check first
| Project | Why it matters |
|---|---|
| Shed Permit | Usually required once the shed exceeds a local size threshold, has a permanent foundation, includes utilities, or violates zoning setbacks. |
| Fence Permit | Often required for tall fences, front-yard fences, corner lots, pool barriers, retaining-wall combinations, and historic districts. |
| Deck Permit | Almost always required for attached decks, elevated decks, structural repairs, and decks with stairs or guards. |
| EV Charger Permit | Usually required for Level 2 hardwired chargers, panel upgrades, new circuits, and garage wiring changes. |
| Solar Permit | Almost always required. Solar normally needs building/electrical permits and separate utility interconnection approval. |
| Bathroom Remodel Permit | Often required when plumbing, electrical, framing, ventilation, or waterproofing systems are changed. |
| HVAC Replacement Permit | Usually required for furnace, condenser, heat pump, major duct, gas line, and equipment-location changes. |
| Basement Finishing Permit | Usually required when unfinished space becomes habitable, especially with bedrooms, bathrooms, or new walls. |
Best first call
Start with the city building department if the property is inside city limits. If not, call the county building or planning office and ask which authority has jurisdiction for zoning, building, and trade inspections.