Picture a church at 10:40 on a Sunday morning. The first service has just ended, and six hundred people are trying to leave the sanctuary through the same doors that the second service is trying to enter. The line for the women’s restroom has backed up past the welcome desk, and parents picking up toddlers from the nursery are standing in the main corridor holding their check-in tags while other parents try to squeeze past to drop children off. Every room in this building works well for the hour it was designed for, and the building passed plan review without a comment on circulation. What it does not do is work for the fifteen minutes in between, and in a church with more than one service, those fifteen minutes are when the building is actually tested.

Most church building conversations begin with the sanctuary: how many seats, what shape, how the platform relates to the room. Church foyer design, along with the corridors, restrooms, children’s check-in, and parking, tends to follow as support space, sized after the worship room is settled and trimmed first when the budget tightens. That order makes sense on paper and fails on Sunday. Across more than 1,000 church projects, the pattern we see most often is not a sanctuary that is too small or too plain. It is a building whose rooms each work on their own and whose transitions between them do not.

The service is not the hard part

The worship hour is the most predictable stretch of the week. People are seated, the main room is doing exactly what it was designed to do, and the demand on everything outside it drops close to zero. The National Congregations Study, which has surveyed a nationally representative sample of American congregations in waves since 1998, describes that hour with a consistency that holds across most traditions.

A building designed around those seventy-five minutes, and only around them, will usually perform beautifully during them. The difficulty starts in the minutes before and after, when the people who were sitting still all begin moving at once. In a church with multiple services, they are also moving against a second crowd coming the other way. The doors, the restrooms, the coffee station, the nursery counter, the hallway outside the student wing, and the parking lot entrance all reach their peak load at the same moment, and none of them is under meaningful load for most of the rest of the week.

That last fact is exactly why these spaces get squeezed. A foyer that sits mostly empty six days out of seven looks like a reasonable place to give back square footage when the estimate comes in high. A second set of restrooms near the children’s wing looks like a duplication. A drop-off loop looks like paving the owner could skip. Each of those decisions is defensible in isolation, and together they produce a building that feels cramped at the one time of the week when the most people, including the most first-time guests, are in it.

Code minimums describe a different building

The building code does not catch this, and it was never meant to. The 2021 edition of the International Plumbing Code requires places of worship to provide one water closet for every 150 men and one for every 75 women, plus one lavatory for every 200 people, calculated by splitting the occupant load evenly between the sexes. For a 600-seat sanctuary, that works out to two toilets on the men’s side, four on the women’s side, and two sinks in each room. That count is legal, and in a building where people arrive and leave in a steady trickle, it might even feel adequate. In a church where the entire room stands up at the same moment, a large share of those six hundred people want the same six fixtures within the same ten minutes, and the line becomes part of the morning whether anyone intended it or not. Jurisdictions adopt different editions with their own amendments, so the exact ratios on any given project are worth confirming, but the logic behind them is the same everywhere.

The same gap appears in the foyer. For sizing exits, the 2021 International Building Code counts standing space at five net square feet per person. That figure answers a safety question, namely how many people could physically occupy a space so that the doors and stairs can be sized to get them out. It describes a crowd standing nearly shoulder to shoulder, which is the right assumption for designing exits and the wrong one for designing a room where people are meant to find each other, hold a conversation, and keep a cup of coffee upright. A foyer sized at the code’s density is a foyer that has been sized for an evacuation.

None of this is a criticism of the code. Its occupant loads and fixture ratios are floors, set to protect health and life safety across thousands of building types, and our earlier piece on how the code sets occupancy and occupant load explains why those numbers need to be settled before design begins. The point is that a code-compliant church and a church that works on Sunday morning are two different standards, and only one of them shows up on the plan reviewer’s checklist.

Designing the turnover

The question we start with rarely appears in a building program: how many people are in the building at 10:45? For a church running two services, the honest answer is not the sanctuary capacity. It is everyone still lingering from the first service, plus everyone arriving early for the second, plus children and the volunteers serving them in both. Even with conservative assumptions about how many people stay and how many arrive early, a church with two 600-person services can have well over a thousand people on site at once, although no single room ever holds more than six hundred. That number, and the fifteen or twenty minutes during which it holds, is what the foyer, corridors, restrooms, and parking actually have to serve.

Once that number is on the table, the design responses become concrete. Exits from the sanctuary can be separated from the main entry so the two crowds are not meeting in one set of doors. The foyer can be shaped deeper rather than merely wider, so that people who stop to talk are not standing in the path of people who are trying to move. Children’s check-in can sit to one side of the main flow with its own waiting area, so that pickup and drop-off do not become a single knot in the corridor. Coffee belongs where lingering is welcome and away from the doors, which is the opposite of where it usually ends up. Restrooms split into two smaller groups, one near worship and one near the children’s wing, will usually serve a crowd better than one large group at the end of a long hall, because the walk is shorter and the lines divide.

The site follows the same logic. Parking ordinances count spaces against seats, but on a two-service Sunday the real constraint is turnover: how quickly the first service’s cars can leave while the second service’s cars are arriving through the same driveway. A second curb cut, a drop-off loop that keeps families from parking just to walk a child to the door, and a lot layout that does not funnel every car through one aisle can matter more than adding spaces. Those decisions have to be made during site planning, because they depend on where the city will allow driveways and how the building sits on the land.

The service schedule is a design variable as well, and a surprisingly inexpensive one. Moving from a fifteen-minute gap to a thirty-minute gap changes the overlap more than almost any amount of added foyer area could, at the cost of a longer morning for staff and volunteers. We would rather have that conversation with a pastor and an executive pastor in schematic design, when the building and the schedule can still be shaped together, than discover after move-in that the schedule is doing work the building should have done.

This is where a long track record matters most. Almost none of it is visible in a floor plan review, because a floor plan shows rooms and not minutes. We walk owners through a Sunday timeline before the plan is fixed, and we ask the people who live that timeline every week: the children’s director, the parking team lead, the volunteer who runs the welcome desk. When the budget will not support the foyer the timeline calls for, we come back with alternatives rather than a smaller foyer. A classroom can be designed to open into the foyer as overflow. The children’s wing can get its own entry. The dismissal can be staged, or the gap between services widened. A building can be made to work on Sunday without being made larger, but only if someone has counted the people who will be standing in it.

When the turnover is not the problem

Not every church faces this, and it would be a mistake to design every church as though it did. The National Congregations Study found that the median American congregation drew 68 people across all of its weekend services in 2018-19. A congregation of that size with a single service has no turnover crush to plan for, and spending money on a large foyer it will never fill would be the wrong use of a limited budget. Its pressure point is usually different: the half hour after worship when people stay to talk, which calls for a gathering space that is pleasant and close to the sanctuary rather than large.

That is where William Whyte’s observation earns its place at the top of this piece. Whyte spent years filming plazas in New York and found that people gathered where there were places to sit, edges to lean on, and a reason to stay. A small church foyer with good light, somewhere to set a cup down, and a clear view of the sanctuary doors will hold a congregation’s fellowship far better than a larger room that feels like a corridor. Size is only one variable, and for most small congregations it is not the important one.

The congregation in between needs the most careful thinking. A church running one service today that expects to add a second within a few years should plan for that second service now, even if it does not build for it yet. Restrooms, foyer, and children’s check-in are the most expensive parts of a church to enlarge after the fact, because they sit at the front of the building, carry plumbing below the slab, and usually cannot be closed during construction without disrupting every gathering. The cost of designing the expansion path is small. The cost of discovering that the building has no expansion path, five years in, is not. As we noted when looking at how churches are now programming worship space around weekly use, the most useful buildings are the ones designed for how the congregation will gather, not only for how many people it can seat.

At UNITE, we design churches around the whole Sunday rather than the single hour inside the sanctuary, because that is where more than a thousand church projects have taught us buildings succeed or quietly fail. That means counting the people who will be standing in the foyer at 10:45, testing restroom and parking decisions against the overlap rather than the code minimum, and bringing the children’s director and parking team into the conversation while the plan can still change. When the budget pushes back, we bring options that protect the transition instead of simply shrinking it. If your congregation is planning to build, expand, or add a service, we would be glad to walk through your Sunday timeline with you and talk about what your building needs to do in those minutes between.