A plan that works in one house can fail in another, even when the family and the hours are the same. Before you choose anything for dusk, count what your house actually allows. That means the rooms she can reach on her own, the doors that open to the outside, and any stairs she uses without help. Start with a walk, not a floor plan.

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Walk the route she would take

Sit in her usual chair at about five o'clock on an ordinary evening and watch where she goes. Note the first room she heads toward, the door she tries, and the route she takes from the kitchen to the front of the house. Then walk every exterior door and every door that leads to a garage, a basement, or a side yard. Tag each one as locked, unlocked, or unknown. The unknown doors are the ones that cost you the most at dusk.

Single level

A one-level house has fewer routes to cover, but most rooms open onto the same hallway. One open door at the end of that hallway can serve as the route for the whole house. Check how far she must walk from her bedroom to the nearest outside door, and whether someone sitting in the living room can see that hallway without standing up.

Split level, two stories, or stairs

Stairs add a second route, and often a second set of doors at the bottom. Decide whether she goes up and down stairs on her own in daylight. If she does, treat the stairs as part of the route, not as a separate room. Ask who can see the foot of the stairs from the main living area, and whether that same person can also see the front door. If no single spot gives you both views, your plan needs two adults or a different chair.

Basement, lower level, and back rooms

Many families forget the lower level. A door to the basement or a back room can look like a closet in daylight but read as a way out to the yard at dusk. Walk those doors in the evening, not at noon. Light changes which doors look like exits.

Match the plan to the people you have

Once you have counted the rooms and doors, count the adults. One adult can cover a single floor reasonably well if the house is open and the exits are few. The same adult cannot cover two floors, a basement, and a back yard at the same time. Be honest about which rooms you can see from one spot and which you cannot. Where the honest answer is none, you know exactly where the plan is thin.

Write the plan on one page

Draw the house as a simple list: the rooms, the doors, and where each adult will stand from five to seven. Keep the page on the refrigerator or in the drawer by the front door. Walk it through once a season, because furniture moves and visitors bring new habits. For the order to run the plan in, see Start Here: Dusk to Morning, in Order.

Size the Plan to the House You Have: Count the Rooms She Can Reach Alone