If you're struggling to pay your mortgage, an accessory dwelling unit (ADU) might be a viable solution to lower your holding costs. By renting out the ADU, you can generate additional income to offset your mortgage payments. However, before proceeding, it's essential to assess the feasibility of an ADU on your property. Local zoning laws, construction costs, and potential rental income are critical factors to consider.
Based on federal consumer protection law and HUD/CFPB public guidance · Last reviewed July 2026
The Direct Answer
An ADU can be a feasible option to lower holding costs if you have sufficient space on your property and comply with local zoning regulations. The construction cost of an ADU can range from $50,000 to $200,000 or more, depending on the size and amenities.
To determine the feasibility of an ADU, you'll need to research local zoning laws, obtain necessary permits, and consult with a contractor or architect to estimate construction costs. You should also research the potential rental income in your area to ensure it can help offset your holding costs.
Do not begin construction on an ADU without obtaining the necessary permits and approvals from your local government, as this can result in fines and penalties.
Assessing Feasibility
Local Zoning Laws
The first step in determining the feasibility of an ADU is to research local zoning laws and regulations. You can contact your local planning department to inquire about specific requirements, such as minimum lot size, setback restrictions, and height limitations.
Construction Costs
You'll also need to estimate the construction costs of the ADU, including materials, labor, and permits. It's essential to consult with a contractor or architect to get an accurate estimate.
Potential Rental Income
To determine the potential rental income of an ADU, research the local rental market and comparable properties in your area. You can use online rental platforms or consult with a real estate agent to get an estimate of the monthly rental income. This will help you determine whether the ADU can generate sufficient income to lower your holding costs.
Financing Options
If you decide to proceed with constructing an ADU, you'll need to explore financing options. You can consider a home equity loan, a construction loan, or a cash-out refinance. However, be aware that these options may have different interest rates, fees, and repayment terms, so it's essential to carefully review the terms and conditions before making a decision.
Get Started with ADU Feasibility
Contact your local planning department to inquire about zoning regulations and permits, and consult with a contractor or architect to estimate construction costs. You can also research potential rental income in your area to determine the feasibility of an ADU.
The average cost of constructing an ADU can range from $50,000 to $200,000 or more, depending on the size, materials, and amenities. It's essential to consult with a contractor or architect to get an accurate estimate for your specific project.
Can I finance an ADU with a home equity loan?
Yes, you can finance an ADU with a home equity loan, but be aware that these loans may have different interest rates, fees, and repayment terms. It's essential to carefully review the terms and conditions before making a decision.
How do I determine the potential rental income of an ADU?
To determine the potential rental income of an ADU, research the local rental market and comparable properties in your area. You can use online rental platforms or consult with a real estate agent to get an estimate of the monthly rental income.
Do I need to obtain permits and approvals before constructing an ADU?
Yes, you'll need to obtain the necessary permits and approvals from your local government before constructing an ADU. Failure to do so can result in fines and penalties, so it's essential to comply with local regulations.