How to Design a Custom Home for Aging in Place
Last Updated: October 31, 2026
Quick Summary
Custom home design for aging in place means planning the house around how your needs may change over the next two decades, using universal design. Plan it during the original build, starting with a written design brief, a single-storey layout with a main-floor bedroom, step-free access, and a curbless shower.
Write a design brief covering the next 20 years, not just the household you have today.
Choose a main-floor primary bedroom with a full ensuite bathroom and laundry nearby.
Target clear doorways of at least 815 mm (32 inches) and primary hallways of 1065 to 1220 mm (42 to 48 inches) for wheelchair access.
Use a 1:12 ramp slope with level landings, and keep exterior thresholds at 13 mm (1/2 inch) or less.
Install blocking for grab bars during framing and choose a curbless shower entry.
Table of Contents
Most homeowners start thinking about accessibility only after a fall, a surgery, or a diagnosis. This proactive approach, however, can significantly reduce future costs and disruptions.
Universal design is the approach most architects and builders use for this. It focuses on creating environments usable by all people, to the greatest extent possible, without the need for adaptation or specialized design.
Here is the core idea we want you to take away: designing for aging is cheaper and less disruptive when it happens during the original build.
Below, we walk through five steps you can use to plan a home that stays comfortable as your needs change.
Step 1: Write a Design Brief That Covers Your Next 20 Years
Start with a written design brief. Most people skip this and go straight to floor plans, which is where expensive mistakes begin. A well-defined brief acts as a roadmap for your entire project.
A useful brief answers a few plain questions:
How many people will live in the home now, and who might move in later?
Which rooms do you use every day, and which do you rarely enter?
Do you expect to stay in this home for 20 years or more?
Write the answers down and share them with your architect and builder. Ask them to test each design decision against the brief. This ensures that the final home aligns with your long-term vision and functional requirements.
Watch out: many people put guest rooms and home offices on upper floors because it looks better on paper. Consider the long-term implications of accessibility for all essential rooms.
Step 2: Choose a Single-Storey Layout With a Main-Floor Bedroom
A single-storey layout, or a plan with the primary bedroom and full bathroom on the main floor, is one of the most effective choices for aging in place. This configuration minimizes the need for stair use, a common source of falls.
Consider these features when reviewing layouts:
A main-floor primary bedroom with a full ensuite bathroom
Laundry on the same level as the bedroom
Open sightlines between the kitchen, living room, and dining area
Open-concept plans help with safety too. Fewer walls mean fewer corners to bump into and better visibility for anyone who needs to keep an eye on the home. This can be particularly beneficial for caregivers.
If you need a second level for family or guests, plan for a future residential lift during the design phase. This foresight can save significant renovation costs later.
Step 3: Build Step-Free Access and Wider Circulation Into the Plan
Step-free access starts at the front door and continues through the whole home. Many houses have a single step at the entrance, a raised threshold at the patio door, or a sunken living room. Each one becomes a barrier over time. The difference between a plan that works and one that merely looks accessible is usually a few inches, so this is the step where you should insist on numbers, not adjectives.
The dimensions that matter most
Common planning clearances cover walkers, wheelchairs, and everyday needs such as carrying laundry or groceries. Use these as working targets, then confirm them against the applicable building code and any accessibility standard your designer specifies for the project:
Doorways: At least 815 mm (32 inches) clear width is a common minimum for secondary rooms, while 915 mm (36 inches) clear width is the target for main paths. "Clear width" means the space when the door is open, not the rough opening in the frame.
Hallways: 1065 to 1220 mm (42 to 48 inches) wide on primary routes lets a wheelchair pass a person walking, and makes turns far easier. A 915 mm (36-inch) hallway is passable but tight at corners.
Turning space: a 1525 mm (60-inch) diameter circle in a bathroom or kitchen lets a wheelchair turn fully; a T-shaped clear space of similar footprint works in tighter rooms.
Circulation is a path, not a width
Width alone does not make a home navigable. Trace the actual routes someone will use, bedroom to bathroom at night, kitchen to laundry, entry to living room, and check each one for sharp turns, door swing conflicts, and floor-level changes.
Also plan the outdoor route. An accessible entrance is only useful if the path from the driveway or parking is level or gently sloped, wide enough to clear snow, and lit.
Watch Out A ramp that meets 1:12 on paper can still fail in practice if it lands on a slope, lacks a landing, or has no edge protection. Have your designer show the ramp in section, not just in plan, and confirm the rise from finished grade to finished floor before the foundation is set.
Integrating these exterior transitions into the broader layout requires careful attention to senior-friendly floor plans that ensure seamless movement between every threshold and room.
Where the cost trade-offs sit
Deciding these dimensions at the design stage is generally far easier than changing them after construction. Structural blocking and a shaft allowance for a future lift are features worth considering early. These provisions are significantly less expensive to implement during the initial build.
Key Takeaway Ask for a dimensioned circulation plan, door clear widths, hallway widths, turning spaces, ramp slopes, and threshold heights, before you approve the layout. If a number is missing, the plan is not finished.
The article gives these working planning targets for step-free access and circulation.
Feature | Target | Note |
Doorway clear width (main paths) | 915 mm (36 inches) | Measured with the door open |
Doorway clear width (secondary rooms) | 815 mm (32 inches) | Frequent minimum |
Primary hallway width | 1065 to 1220 mm (42 to 48 inches) | Lets a wheelchair pass a walking person |
Bathroom or kitchen turning space | 1525 mm (60-inch) diameter circle | Allows a wheelchair to turn fully |
Ramp slope | 1:12 | Level landings at top and bottom |
Exterior threshold height | 13 mm (1/2 inch) or less | Bevel it |
Under-sink knee clearance | About 685 mm (27 inches) high, 760 mm (30 inches) wide | Target if used seated |
Step 4: Plan the Bathroom for Changing Mobility
The bathroom is where most falls happen, so it deserves extra attention. A curbless shower, sometimes called a zero-threshold shower, is the single most useful feature you can add for safety and ease of use.
Key planning points include:
A curbless shower entry with a slight slope toward the drain
Blocking in walls for grab bars, even if you do not install them yet
Enough clear floor space to turn a wheelchair or walk-in seat into the shower
Ask your builder to install blocking during framing. Grab bars added later are much easier to position and far less likely to pull loose if they are anchored to solid wood. This is a crucial step for future safety.
Many homeowners want a bathroom that feels spa-like without looking clinical. The good news is that accessible features can match high-end finishes. Modern fixtures and materials can create a luxurious yet functional space.
Step 5: Apply Universal Design Features Without an Institutional Look
The final step is to layer in features that improve daily life for everyone. Universal design works best when people do not notice it, and the way to keep it invisible is to decide early which features are structural, which are finish-level, and which are technology you may want to change later. Most guides stop at a feature list. The more useful exercise is sorting those features by when they are cheapest to include and what they commit you to.
Sort features by when they are cheapest to add
Structural, decide before framing: wall blocking for grab bars, reinforced ceiling points for a future lift or hoist, wider rough openings, a curbless shower base, and conduit for future wiring. These are inexpensive during construction and disruptive to add later.
Finish-level, decide during design, install at the end: lever handles instead of knobs, rocker switches, comfort-height toilets, pull-out shelves, and contrast between counters, cabinets, and floors. These are easy to change later, so they are lower-risk decisions.
Technology, decide late, but wire early: smart locks, lighting controls, and voice assistants can be swapped as products change, but they need power and network drops in the right places. Plan the wiring now and choose the devices later.
Make the accessible choice the default choice
A common mistake is choosing features that look like hospital equipment. Modern hardware is available in finishes that match any design style, and the accessible option is often the better option for everyone: lever handles work with full hands, rocker switches are easier to find in the dark, and a curbless shower is simply a nicer shower. Work with your designer to select options that read as part of the home rather than an add-on.
Technology: compare by reliability, privacy, and upkeep
Smart-home and assistive features are where the trade-offs get real, and where most design articles stay silent. Before you commit, compare options on three axes:
Reliability: does the feature still work if the internet or power goes out? A smart lock that fails open is a security problem; one that fails locked is a safety problem. Prefer devices with local control and a manual override.
Privacy: voice assistants and cameras in bedrooms and bathrooms raise obvious concerns. Choose devices with local processing where possible, and keep sensors out of private spaces.
Upkeep: every connected device needs updates, accounts, and eventually replacement. A house full of app-dependent gadgets can become a maintenance burden. Favor features that degrade gracefully into ordinary manual operation.
A practical pattern is to keep life-safety functions, lighting on a path, door locks, smoke and carbon monoxide alarms, on simple, reliable systems, and reserve the smart layer for convenience.
Plan for maintenance, privacy, and the long term
Accessible homes still need upkeep. Choose flooring and finishes that tolerate cleaning and, in cold climates, wet boots and salt. Plan storage so that frequently used items sit between roughly knee and shoulder height. And think about privacy: a main-floor primary suite is convenient, but it should be separated from the living area by more than a doorway if sound and sightlines matter.
Pro Tip Ask your builder for a "future-ready" schedule that lists every structural provision, blocking, conduit, rough-ins, shaft allowance, with its location. It becomes the map for every later upgrade and saves you from opening walls twice.
Key Takeaway Universal design is not a shopping list. Decide structural provisions before framing, keep finish-level choices flexible, and judge technology by how it behaves when the power or the internet is out.
Booking Your Aging-in-Place Planning Consultation With Compass
Planning a home that works for decades takes careful thought, and the decisions you make at the start shape everything that follows. If you are considering a custom home, book an aging-in-place planning consultation with Compass Custom Homes to talk through your brief, layout options, and budget. You can also get in touch with us directly to ask questions before you commit to a design.
Compass Custom Homes has over 26 years of experience in foundation, concrete, and civil engineering, along with direct communication with major trades. We are HCRA licensed and Ontario Tarion registered. Our goal is to help your family create a home that remains a safe haven as your needs change.
Frequently Asked Questions
What does aging in place mean in home design?
Aging in place means designing a home so residents can stay there safely and comfortably as their mobility, vision or strength changes, instead of moving out later. In practice this covers step-free entrances, a main-floor bedroom, wider doorways and hallways, a bathroom that works without a tub transfer, and lighting and contrast that support safe movement. A custom home lets you build these features in from the start, which is usually far less expensive than retrofitting them after a fall or diagnosis.
Is a single-storey home better for aging in place?
For most households, a single-storey home or a home with a fully accessible main floor is the most practical choice. It removes the need to use stairs for daily living, keeps the bedroom, kitchen, laundry and bathroom on one level, and reduces fall risk on steps. Two-storey homes can still work if a main-floor bedroom and powder room are included and a residential lift or stair space is planned in the framing. The right answer depends on your lot, budget and how you use the house, so Compass recommends reviewing the options against your actual daily routine.
How wide should doorways be for wheelchair access?
A common planning target for wheelchair access is a clear doorway opening of at least 815 mm (32 inches) and wider hallways that allow a turning circle at intersections. Exact requirements depend on the mobility aid, the turning radius and the local building code, so confirm dimensions against the applicable building code and your intended equipment before finalizing the plan. Pricing depends on the specific layout, so contact Compass Custom Homes directly for current pricing.
What should you include in an aging-in-place home design brief?
A strong design brief lists current and anticipated needs: mobility aids you may use, whether you want a main-floor bedroom, how many people will live in the home, guest and caregiver requirements, storage height preferences, and any future smart-home or lift needs. It should also state your site constraints, budget priorities and the features you want to add later. Writing this down early gives the architect and builder a clear target.
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