How to Sequence a Whole-Home Modification

Why this matters

A whole-home modification is four or five small jobs that share one occupant, and the order you do them in decides whether that person can live in the house while you work. Get it wrong and a customer who was managing with difficulty spends two weeks unable to reach a toilet, or a family moves a parent into respite care because the only entry was torn out on the same week as the only shower. Get it right and every phase leaves the house a little safer than it was the day before, which is the whole point of the job.

This article is about ORDER. What each room needs is covered by the room-specific cards, and the assessment that tells you what the person actually needs is its own card. See related: The Accessibility Walkthrough with the Person Who Lives There.

Step 1: Map the daily route before you list the rooms

Sit with the person who lives there and trace one ordinary day as a path through the house: bed, toilet, wash, dress, kitchen, chair, the door they leave by, and back. Write it as a line, not a room list.

Why first: a room list invites you to sequence by trade convenience (all the plumbing, then all the carpentry). A route tells you which spaces are load-bearing for this person's day, and those are the ones whose downtime you have to plan around. A spare bedroom on the route matters more than a primary bath they no longer use.

What breaks if you skip it: you sequence the job around the house plan instead of the person, and discover in week two that the half bath you scheduled last is the one they actually use at night.

Step 2: Put the fall-risk spaces first: the bath and the entry

Of everything on the route, the bathroom and the entry are where a fall is most likely and most costly, because they combine wet or uneven surfaces, a change in level and a transfer of weight. So the first phase makes those two usable and safer, even if the full design for them comes later.

That can mean doing a smaller version first. A grab bar into new blocking and a raised toilet seat this week, with the full curbless conversion in phase three. A temporary modular ramp now, the permanent ramp after the funding approval lands.

Why: the risk does not wait for your schedule. A phase-one fix that removes most of the hazard in two days beats a complete fix in six weeks, and the temporary version also shows you how the person actually uses the space, which improves the permanent design.

What breaks if you skip it: the kitchen gets beautiful first because it was the easiest to start, and the person falls on the entry steps in week three.

Step 3: Never take out both copies of an essential function in the same window

There are five functions the house has to keep providing every night: a way in and out, a toilet, a way to wash, a place to sleep, and a way to get food. For each one, count how many copies the house has (two toilets, one shower, two doors) and schedule so that at least one usable copy, or a planned substitute, exists every day.

This is the rule that does most of the sequencing for you. A house with one full bath and one half bath can have the full bath out of service only while the half bath is usable by this person. A house with one usable entry needs a temporary entry before the permanent one is demolished. The day-to-day mechanics of substitutes, protection and cleanup belong to a sibling SOP. See related: The Keep-the-House-Usable-During-Construction SOP.

What breaks if you skip it: two crews, two rooms, one week, and nowhere to wash.

Step 4: Open each wall once, and do the rough work for later rooms while it is open

Plan the concealed work across ALL phases before you start phase one: blocking for future grab bars, a widened rough opening, a relocated supply, a recessed area for a future curbless floor, wiring for a relocated switch or a future lift outlet. When phase one opens a wall that phase three will need, phase one does phase three's rough work in that wall.

Why: opening, patching and refinishing a wall twice costs more than the blocking itself, and each reopening is another week of dust and noise for the occupant. Blocking in particular is close to free while a wall is open and expensive once tile is up. How much blocking and where is a load question owned elsewhere. See related: Grab Bar Backing and Load: The Structural Rule.

What breaks if you skip it: the bath is finished in phase one, and phase three needs a supply line through its wall.

Step 5: Stage for where the person is going, not only where they are

Ask the person, and the occupational therapist (OT) if one is involved, how their function is expected to change. A standing transfer that may become a seated one, a cane that may become a walker or a chair. Then split each modification into infrastructure that is cheap now and hard later (framing, floor depth, door width, clearances, wiring) and devices that can be added when needed (a second bar, a transfer bench, a lift).

Why: a progressive condition makes the second phase of a job predictable. Building the infrastructure for it now, and deferring the devices, means the later change is a day of installation instead of another renovation. How to stage for specific progressions is its own card. See related: Designing for a Progressive Condition.

What breaks if you skip it: a beautifully fitted standing shower that has to be torn out eighteen months later for a roll-in.

Step 6: Gate each phase on a use test with the person, not on the punch list

Do not start phase two until the person has used phase one for real: transferred onto the toilet, gone in and out the entry with whatever aid they use, reached the controls. Adjust what is adjustable and write down what is not. The procedure for that test is its own SOP. See related: The Modification Handover and Training SOP.

Why, and what breaks without it: the person who cannot reach the new hand-held shower from their seat is telling you where every kitchen control should go. Skip the test and the same mistake is made in every room and found at the end.

Step 7: Build the paperwork and inspection time into the sequence

Funded jobs often need written approval before each phase starts, and permitted work needs an inspection before walls close. Put those as dated tasks in the schedule, with the phase that depends on them starting after, not alongside. Commit to a default of three working days of slack before any phase whose start depends on an approval you do not control, then tune it to the program you are working with.

What breaks if you skip it: a crew standing in a demolished bathroom waiting for an approval, while the person who lives there has no shower.

Worked example: a two-story house, one occupant, three phases

The house: a two-story with three entry steps at the front (total rise 21 in) and one step into the garage. Upstairs, the only full bath (tub with a shower) and the bedroom. Downstairs, a half bath, a den, the kitchen.

The person: a man in his seventies who walks with a cane on level floors, uses the stair rail and the wall to get upstairs, and has stopped showering more than twice a week because the tub step frightens him. The OT's written note says his transfers are standing now and are expected to become seated within about two years.

Step 1 route: bed (up) -> full bath (up) -> stairs -> kitchen -> den chair -> garage door to the car. The front door is not on his route at all; he leaves by the garage. That one observation moved the entry work from the front steps to the garage step and cut the entry phase from a 21 in ramp problem to a 7 in step.

Step 3 copies count: toilets two (the half bath is usable by him today), showers one, entries two (garage and front), sleeping places one upstairs, kitchen one. The single shower is the constraint that drives everything.

The plan the shop built, shown as which essential function is out of service each week:

WK   WORK                      OUT          SUBSTITUTE
1    garage step rails;        nothing      -
     half bath blocking, bars
2    den -> bedroom (bed,      upstairs     den bed
     outlet, lighting)         bed
3-4  full bath: tub out,       only         sponge-bath
     recess floor, curbless,   shower       station in
     blocking for seated bars               half bath
5    kitchen controls,         nothing      -
     second stair handrail

How the rules decided it. Phase one (week 1) does the two fall-risk items on his actual route: the garage step gets a rail on both sides and the half bath gets bars into new blocking, because he already uses that toilet at night. The front steps wait.

Week 2 moves sleeping downstairs BEFORE the upstairs bath comes out. That is step 3 applied: once the only shower is gone, the stairs become a trip he no longer needs to make several times a day, and he agreed to sleep in the den for the duration. Doing week 2 after the bath would have had him on the stairs twice a day to reach a bathroom that was a construction site.

Weeks 3 and 4 take the only shower out, which step 3 allows only because a substitute exists: a sponge-bath station in the half bath with a hand-held sprayer on the sink and a seat. He said he could live with that for two weeks and not longer, so the bath phase was given a hard ten working days.

Step 4 changed the bath phase. While the bathroom floor was open for the recess, the crew added blocking on all three walls of the new shower for the seated-transfer bars the OT expects, not only the standing ones he needs today. The seated bars are not installed. They are in the wall's framing, mapped on the record, waiting.

Step 5 decided the shower type. A curbless floor is the infrastructure (floor depth, drain, slope) that is hard to retrofit, so it went in now even though he can still step over a low curb today. A fold-down seat was deferred, because it is a device you can add in an afternoon into blocking that already exists.

The phase gate fired once. At the week-1 use test he could not grip the round rail at the garage step with his right hand while carrying anything in his left, so he was steadying himself against the door frame. The crew changed nothing that day; the finding went into phase five, where the stair's second handrail was specified with a profile he could grip, checked with him holding a sample before ordering.

Total disruption: ten working days without his own shower, and no day without a toilet, an entry, a bed or the kitchen. Run in trade order (both bathrooms together), the same work would have taken both toilets out in the same week.

What changes the order, and how to check it

A hospital deadline collapses the sequence to whatever has to be true on discharge day (see related: How to Meet a Hospital Discharge Deadline). A house with one toilet means no bathroom phase starts until a substitute is in place and the person has used it once; some people refuse a bedside commode, and that refusal reshapes the whole schedule.

To check the plan before the first day, take the schedule and, for each day, ask the five questions out loud: can they get in and out, use a toilet, wash, sleep, and eat today? Any day with a "no" and no named substitute is a defect in the plan. Then check that every wall on the drawings is opened in exactly one phase, and that every deferred device has its infrastructure in a phase that comes before it.

References

• 2010 ADA Standards for Accessible Design, sections 604 and 609 (water closet and grab bar dimensions): a dimensional reference for a private home, not a requirement there.
• See related: The Accessibility Walkthrough with the Person Who Lives There; Designing for a Progressive Condition.
• See related: The Keep-the-House-Usable-During-Construction SOP; The Modification Handover and Training SOP.
• See related: Grab Bar Backing and Load: The Structural Rule; Grab Bar and Handrail Installation (Handyman SOP).