Why Build an ADU?
Rental Income
Generate $1,500-$3,000+/month in rental income
Property Value
Increase home value by 20-30%
Multi-Use Space
Guest house, home office, or family housing
Housing Flexibility
Age in place or house adult children
ADU Options
Choose the type that fits your property and goals
Detached ADU
Standalone structure in your backyard. Maximum privacy and rental potential.
400-1200 sq ft
- Complete privacy
- Separate utilities
- Full rental potential
- Custom design
Attached ADU
Addition to existing home with separate entrance. Cost-effective option.
400-800 sq ft
- Share some utilities
- Lower construction cost
- Private entrance
- Easier permits
Garage Conversion ADU
Transform existing garage into a living unit. Fastest and most affordable option.
300-600 sq ft
- Uses existing structure
- Lowest cost option
- Faster construction
- No new foundation
What's Included
ADU FAQs
What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary housing unit on a single-family residential lot. ADUs can be detached structures, attached additions, or converted existing spaces like garages. They include full kitchen and bathroom facilities.
Are ADUs legal in Maryland?
Yes, Maryland has been expanding ADU allowances. Montgomery County, for example, allows ADUs in most residential zones. Regulations vary by jurisdiction. We help navigate local requirements and obtain necessary permits.
How much rental income can an ADU generate?
In the Maryland/DC area, ADUs typically rent for $1,500-$3,000+ per month depending on size, location, and amenities. This can significantly offset mortgage payments or provide retirement income.
How long does it take to build an ADU?
Garage conversions take 3-4 months. Attached ADUs typically take 4-6 months. Detached ADUs can take 6-9 months including permitting, design, and construction.
Will an ADU increase my property taxes?
Yes, adding an ADU will likely increase your property's assessed value and therefore property taxes. However, the rental income typically far exceeds the tax increase. Consult a tax professional for specific advice.