Northeast

Home projects in Maryland: costs, permits and rules

Maryland Building Performance Standards, based on the IRC. Chesapeake Bay Critical Area rules add impervious-surface and buffer review to driveways, decks and additions within 1,000 feet of tidal water.

Verified August 2026

Cost index

+12%

vs national baseline

Permit fees

+10%

vs national baseline

Code

Statewide

one code, local enforcement

Population

6.2M

Baltimore, Columbia

Who issues building permits in Maryland?

Local dept., statewide code

Permits in Maryland are issued by the city building department when the property is inside city limits, and by the county otherwise. The requirements come from maryland building performance standards, based on the irc, which applies statewide.

Owner-builder: Homeowner permits allowed on owner-occupied property.

Maryland project costs

Modeled from national baselines and the state cost index. Local pages refine these further.

Roof Replacement	$10,600 – $35,800
AC Replacement	$5,800 – $17,400
Fence Installation	$2,700 – $12,300
Water Heater Replacement	$1,300 – $6,000
Pool Installation	$42,600 – $128,800
Window Replacement	$8,400 – $38,100
Electrical Panel Replacement	$2,100 – $7,600
Generator Installation	$7,300 – $24,600
Solar Panel Installation	$16,800 – $53,800
Kitchen Remodel	$20,200 – $103,000

Project guides for Maryland

Roof Replacement in Maryland$10,600 – $35,800 AC Replacement in Maryland$5,800 – $17,400 Fence Installation in Maryland$2,700 – $12,300 Water Heater Replacement in Maryland$1,300 – $6,000 Pool Installation in Maryland$42,600 – $128,800 Window Replacement in Maryland$8,400 – $38,100 Electrical Panel Replacement in Maryland$2,100 – $7,600 Generator Installation in Maryland$7,300 – $24,600 Solar Panel Installation in Maryland$16,800 – $53,800 Kitchen Remodel in Maryland$20,200 – $103,000 Bathroom Remodel in Maryland$10,100 – $47,000 Driveway Replacement in Maryland$4,700 – $21,300 Paver Patio & Walkway in Maryland$3,900 – $17,900 Deck Construction in Maryland$6,200 – $31,400 Shed Installation in Maryland$2,000 – $13,400 Impact Window Installation in Maryland$10,100 – $47,000 Garage Door Replacement in Maryland$1,600 – $8,400 Roof Repair in Maryland$400 – $5,400 Flooring Installation in Maryland$2,800 – $22,400 Home Addition in Maryland$50,400 – $313,600

Major metros

We are building city-level permit data for Baltimore, Columbia, Silver Spring, Frederick. Until then, use the statewide rules above and confirm with the local building department linked in Sources.

Maryland permit questions

Do you need a permit for home renovations in Maryland?

Maryland enforces a statewide code (Maryland Building Performance Standards, based on the IRC), so permit requirements are broadly consistent across the state, but the permit itself is issued by your city or county. Structural, electrical, plumbing, mechanical and envelope work almost always require one.

Can a homeowner pull their own permit in Maryland?

Homeowner permits allowed on owner-occupied property. Owner-builder status usually makes you responsible for code compliance and for any unlicensed work performed on the property, and many jurisdictions restrict resale within a year of the permit.

Are home projects more expensive in Maryland?

Our model puts Maryland at 12% above the national baseline for installed residential work, with permit fees at 10% versus baseline. Chesapeake Bay Critical Area rules add impervious-surface and buffer review to driveways, decks and additions within 1,000 feet of tidal water.

Sources

Sources & verification

Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.