Maryland ADU vs. Assisted Living Cost Planner

An ADU and assisted living are not equivalent products. An ADU provides housing; a licensed Maryland assisted-living program combines housing with varying levels of supportive, personal and health-related services. This planner compares cash outlay only after making you account for care that may still be needed at home.

Last verified: September 7, 2026. Financial and care costs vary widely by project, facility, location and care level. This tool is educational and is not financial, medical, tax, real-estate or legal advice.

Maryland ADU vs. assisted living cash-outlay planner

What the assisted-living number means

CareScout’s 2025 Cost of Care Survey reports a Maryland median of $86,070 per year, or $7,172 per month, for an assisted-living community based on a private one-bedroom unit. It is a statewide survey median, not a government-set rate and not a quote for Baltimore County. Actual facilities can be materially higher or lower depending on location, room type and care needs.

The care gap: why an ADU cannot be compared to assisted living on housing cost alone

Maryland’s Office of Health Care Quality describes an assisted-living program as a residential or facility-based program providing housing plus supportive services, supervision, personalized assistance, health-related services or a combination of them. Depending on the resident, that can include help with medications, bathing, dressing, mobility, meals and other activities of daily living.

An ADU provides a dwelling. It does not automatically provide those services. If a parent will need paid support at home, enter that expected monthly cost in the calculator. If family members will provide unpaid care, the calculator cannot value their time, availability or caregiver burden.

Why we do not add “ADU equity” to the result

It is reasonable to consider that a legal ADU may affect how a property is used and valued, but no responsible calculator can promise a future appraisal premium. The effect depends on the property, market, legality, construction quality, financing and buyer demand. This planner therefore sets future ADU value, future rent and appreciation to zero instead of manufacturing a return-on-investment number.

Designing an ADU for an aging parent: questions for the design brief

If the ADU is being planned for an older parent or grandparent, treat accessibility as a design objective from the first sketch rather than a late retrofit. These are planning questions to discuss with the designer; they are not presented here as universal Maryland ADU code requirements. For the full property-to-design workflow, use our Maryland ADU for Aging Parents planning guide; this page stays focused on the ADU-versus-assisted-living cost comparison.

• Entry: Can the main entrance be reached without steps, or can grading and the threshold be designed to reduce level changes?
• Circulation: Are doors, hallways and turning areas generous enough for changing mobility needs and furniture movement?
• Bathroom: Can the shower avoid a high curb, and can wall framing include blocking for future grab bars or other supports?
• One-level living: Can the sleeping area, bathroom, kitchen and primary entry all function on the same level?
• Lighting and controls: Are switches, outlets, task lighting and nighttime paths easy to reach and use?
• Privacy and support: Does the plan balance independent living with practical access for family or paid support when needed?
• Emergency access: Can responders and family reach the unit without relying on a narrow or obstructed route?

Before paying for detailed drawings, use our Maryland ADU architect screening guide to document the zoning authority, size method, site assumptions and permit scope with the designer.

Before using the result to make a family decision

• Confirm ADU feasibility first. Use the Maryland County ADU Rules Tracker and the relevant county guide.
• Use a real ADU budget. Review the Cost Escalation Guide first so a shell or headline quote is not mistaken for an all-in project budget, then transfer the total from our Cost & Bid Tool.
• Use real facility quotes. Replace the statewide median with the monthly fee for the communities you are actually considering and ask what services trigger additional charges.
• Estimate care separately. Discuss likely 12–36 month care needs with the family and appropriate health professionals.
• Consider timing. ADU design, permitting and construction can take months; it may not solve an immediate care crisis.
• Do not borrow based only on this comparison. Financing cost and repayment risk need their own analysis; see our Maryland ADU Financing Guide.

Sources and data notes

• CareScout — 2025 Cost of Care Survey, state median tables
• CareScout — Cost of Care methodology and national/state data
• Maryland Department of Health, Office of Health Care Quality — Assisted Living Programs
• Maryland Department of Health — Assisted Living consumer information and levels of care

Maryland ADU Guide is an independent research publication. This planner is designed to improve the questions a family asks; it does not determine which housing or care setting is appropriate for a particular person.