01 —Service
Aging-in-Place Modifications
MOSS designs and builds substantial, architecturally integrated accessibility, not a retrofit of grab bars and ramps.
03 —Common Questions
Everything you want to know about aging-in-place modifications
How much does an aging-in-place remodel cost in the DC metro area?
An aging-in-place remodel in the DC metro area typically costs $130,000 to $920,000, with most MOSS clients investing around $390,000.
The wide range reflects the scope of what MOSS builds: a first-floor primary suite addition, a full accessible bathroom, or an in-law suite involves structural work, plumbing relocation, and finish-level architecture, not a single grab-bar installation. Existing floor plan, whether the project requires an addition, and the level of finish are the biggest cost drivers.
How long does an aging-in-place remodel take?
A first-floor primary suite or in-law suite project with MOSS typically runs 4 to 8 months from permit to completion, depending on whether it involves an addition.
A bathroom conversion to a curbless, roll-in shower within an existing footprint moves faster than a first-floor primary suite that requires a structural addition or a full main-level reconfiguration. Design and engineering for structural changes, including any elevator installation, extend the front end of the schedule.
What permits are required for an aging-in-place remodel?
Projects like first-floor primary suites, additions, and residential elevators require building, structural, plumbing, and electrical permits, all handled in-house by MOSS.
An elevator installation adds a separate permitting and inspection track specific to that equipment, while widening doorways or hallways within an existing structural envelope may involve less review. MOSS's in-house permitting team manages submissions across every jurisdiction in the DMV.
What does a MOSS aging-in-place project actually include?
A MOSS aging-in-place project includes design, structural engineering, permitting, and construction for suite-level accessibility work, first-floor primary suites, curbless and roll-in showers, widened doorways and hallways, reinforced grab-bar walls, main-level laundry, in-law suites, and residential elevators.
Scope is sized to the whole living space rather than a single fixture: a bathroom project typically includes a curbless or roll-in shower and reinforced walls built to support grab bars now or later, while a suite-level project includes a no-step entry, widened circulation, and often a main-level laundry. Universal design principles are applied throughout so accessibility is built into the architecture, not added on top of it.
What design approach does MOSS use for accessible bathrooms and suites?
MOSS designs accessible bathrooms and suites around the same finish level as the rest of the home, curbless showers, wide-format tile, and furniture-style vanities, rather than standard medical fixtures.
Reinforced blocking for grab bars is built into the wall structure during framing, and curbless shower thresholds are engineered into the subfloor, so the accessibility features don't dictate the aesthetic. Material choices, tile, stone, cabinetry, are selected to match the rest of the home.
Will an aging-in-place remodel make my home look institutional?
No. MOSS's universal design approach engineers accessibility into the architecture so a first-floor primary suite or accessible bathroom reads as a beautiful home, not a hospital.
Curbless showers, no-step entries, and widened hallways are designed as architectural features rather than medical retrofits, using the same materials and design language as the rest of the house. The goal is a home that works for every family member and every stage of life without announcing itself as an accessibility project.
04 —Materials Guide
Compare your options
5 Universal Design Features That Add Resale Value
Curbless Shower Entry
A zero-threshold shower reads as a modern design choice to any buyer, not just an accessibility feature.
Wider Hallways and Doorways
Widened circulation improves everyday flow and furniture movement for every homeowner, not only one with mobility needs.
First-Floor Primary Suite
A main-level primary suite is one of the most requested features among move-up buyers, independent of accessibility.
No-Step Entry
A no-step entry from the garage or driveway is a practical convenience that appeals broadly, especially for buyers with strollers or heavy deliveries.
Main-Level Laundry
Relocating laundry to the main floor is a widely desired convenience upgrade that also supports single-level living.
5 Signs It's Time to Plan a First-Floor Primary Suite
Stairs Are Becoming a Daily Obstacle
Climbing to a second-floor primary bedroom every day is starting to feel harder than it used to.
You're Planning to Stay in Your Home Long-Term
A first-floor suite lets you plan for the next decade or more in the same house rather than facing a future move.
A Family Member Needs Main-Level Access
An aging parent or a family member with mobility needs may require single-level living sooner than the rest of the household.
Your Current Bathroom Can't Accommodate a Roll-In Shower
An existing bathroom footprint that's too small for a curbless, roll-in shower is a sign it's time for a fuller reconfiguration.
You Want to Avoid a Reactive Move
Planning a suite now, on your own timeline, avoids a rushed renovation or a hurried move after a health event.
05 —Portfolio
Aging-in-Place Modifications projects
Portfolio in Progress
We're adding more Aging-in-Place Modifications projects to our portfolio — check back soon.
Browse our full Aging-in-Place Modifications portfolio →Or explore all served citiesOther Services
Other ways MOSS transforms your home
06 —FAQ
Frequently asked questions
- How much do aging-in-place modifications cost in the DC metro area?
- Across 19 completed MOSS projects, aging-in-place work in the DC metro area runs from $130,000 to $920,000, with most investments landing around $390,000. MOSS focuses on substantial, design-led accessibility such as first-floor primary suites, fully accessible bathrooms, no-step entries, and in-law suites rather than one-off fixture swaps. Your final number depends on scope, square footage, and finish level, which your Project Developer confirms after design.
- What does MOSS's aging-in-place work include?
- MOSS designs homes so you can stay in them comfortably for decades. That includes first-floor primary suites, curbless and roll-in showers, no-step entries, widened doorways and hallways, reinforced grab-bar walls, main-level laundry, and in-law suites. On larger homes we also install residential elevators. Every solution is built into the architecture so it reads as a beautiful home.
- Will accessibility features make my home look institutional?
- No. MOSS uses universal design, which means accessibility is engineered into the layout and finishes instead of bolted on. A curbless shower reads as a spa, a first-floor primary suite reads as a luxury retreat, and grab-bar reinforcement stays hidden in the walls until you need it. The result is a home that is easier to live in and holds its resale value.
- Do aging-in-place modifications require a permit?
- Most do. Any structural change, new bathroom, widened opening, electrical or plumbing relocation, or elevator installation requires a building permit from your county's permitting office. MOSS handles the full permitting process in house, including drawings and inspections, so you never have to manage it yourself.
- How long do aging-in-place modifications take, and what's the process?
- It depends on scope. A single accessible bathroom or no-step entry is typically a few weeks of construction, while a first-floor primary suite or in-law suite addition runs several months. Every MOSS project includes in-house design, structural engineering when needed, full permitting, construction, and a final walkthrough, and you receive a firm schedule after the design phase.
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