Mistakes to Avoid
7 Critical Mistakes Homeowners Make During the Permitting Process
Starting work before the permit is issued can lead to double fees and stop-work orders.
Read GuideLocal Project Overview
ADU Construction · Anne Arundel County, Maryland
Permit required
In Maryland, a ADU Construction requires a building permit.
An accessory dwelling unit (ADU) always requires a building permit because it adds a habitable dwelling, including electrical, plumbing, mechanical permits and egress/zoning review. Plans are reviewed under the Statewide + local code (IRC 2021); apply through Anne Arundel County Inspection before work begins.
Source: Statewide + local, IRC 2021 · Verified 2026 by StateDataIndex
Building an Accessory Dwelling Unit requires complex zoning, structural, and utility permits.
As one of the more densely populated areas in Maryland, Anne Arundel County (around 598,166 residents) tends to see higher application volumes at its building department, so it helps to prepare your documentation in advance.
Code Compliance & Inspections
Work on your ADU Construction in Anne Arundel County will be inspected to ensure full compliance with the current Maryland Building Performance Standards.
Concurrent Permits & HOAs
For Anne Arundel County residents, we highly recommend reviewing your neighborhood HOA covenants before paying any municipal fees. Often, homeowners associations maintain stricter rules regarding materials and dimensions for your ADU Construction than the county itself.
Zoning & Cost Factors
Maryland integrates local zoning with state-level "Smart Growth" initiatives, heavily restricting sprawl and protecting the Chesapeake Bay watershed. Fortunately, Maryland maintains relatively builder-friendly regulations, keeping base permit fees competitive.
Permit fees in Anne Arundel County
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Anne Arundel County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Anne Arundel County Inspection ((410) 222-7790). If you have paid for a permit here, you can add it here to help others.
Anne Arundel County Building Department
Office: Anne Arundel County Inspection
Address: 2664 Riva Rd # 170, Annapolis, MD 21401, USA
Phone: (410) 222-7790
Source: official Anne Arundel County government records. Hours and procedures can change — call ahead to confirm.
How to Apply in Anne Arundel County
In Anne Arundel County, you or your contractor typically submit blueprints and a property survey to the local building department. Call ahead to confirm hours and accepted payment methods.
ADU Construction Requirements in Anne Arundel County
Typical Submittal Package
When applying for a ADU Construction permit, you or your contractor will generally need to submit the following documentation for the city's review:
- Comprehensive architectural and structural plans
- Foundation engineering reports
- Sewer, water, and utility connection plans
- Site plan showing property lines and setbacks
Standard Ordinances & Processing Time
Key code points for a ADU Construction in Anne Arundel County: ADUs typically have maximum square footage limits (often 800-1200 sq ft), height restrictions, and usually require dedicated off-street parking depending on local zoning.
Typical processing time for a jurisdiction of this size: 2 to 4 weeks.
Frequently Asked Questions
What are the specific penalties for unpermitted ADU Construction work in urban Anne Arundel County?
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Can a homeowner pull their own ADU Construction permit in Maryland?
Yes. Maryland generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Maryland Building Performance Standards.
How much does a ADU Construction permit cost in Anne Arundel County?
Permit fees vary by jurisdiction and by your project's valuation, so Anne Arundel County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
How long does it take to get a ADU Construction permit in Anne Arundel County?
Based on the size of Anne Arundel County, the typical processing time is 2 to 4 weeks. Times vary with the season and the building department application volume.
Where do I apply for a ADU Construction permit in Anne Arundel County?
You can apply through the Anne Arundel County Inspection or online via the county permit portal. For questions, call (410) 222-7790.
Help the Anne Arundel County Community
Did you recently pay for a permit here? Anonymously share the fee to help our database stay accurate.
Thank you! Your data has been saved.
Expert ADU Construction Resources
Mistakes to Avoid
The Hidden Costs of Unpermitted Construction
Discover the true financial and legal dangers of unpermitted work, from retroactive fines...
Read Guide
Cost Planning
How to Estimate Your Remodeling Budget (Beyond the Fees)
Learn how to accurately estimate your home remodeling budget, factoring in hidden costs...
Read GuideBuilding It Yourself? Here's What You'll Need
Planning an ADU? Tools homeowners use in the design and layout phase:
📘
Backyard ADU Design Guide (Book)
View on Amazon →
📐
Laser Level
View on Amazon →
🔍
Franklin ProSensor Stud Finder
View on Amazon →
📏
25ft Tape Measure
View on Amazon →
As an Amazon Associate, we earn from qualifying purchases.
Other Permit Types in Anne Arundel County
Planning another home improvement project? Check the requirements and fees for:
Nearby Jurisdictions in Maryland
Building near the county line? Check requirements for neighboring areas: