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Friday Fun Thread for August 15, 2025

Be advised: this thread is not for serious in-depth discussion of weighty topics (we have a link for that), this thread is not for anything Culture War related. This thread is for Fun. You got jokes? Share 'em. You got silly questions? Ask 'em.

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My unhealthy obsession with designing houses continues unabated.

One somewhat strange aspect of the IPMC (International Property Maintenance Code) is table 404.5, which lays out the minimum areas of living rooms and dining rooms based on occupant count.

OccupantsLiving (ft2)Dining (ft2)Total (ft2)⌈Total per occupant⌉ (ft2)
11200120120
2120012060
31208020067
41208020050
51208020040
6–∞15010025042–1

Obviously, it is nonsensical for the total required assembly area per occupant to bounce around like this.

IBC (International Building Code) table 1004.5 states that a dining/living room with tables and chairs should have 15 ft2 per occupant. Therefore, I am inclined to think that it would make sense to superimpose on IRC table 404.5 a failsafe minimum of 45 ft2 per occupant.

Your houses seem much more generous than the IPMC. I think it matters a lot more how the space will be used: 8 adult occupants in a sharehome will probably want their own bedrooms, whereas 8 occupants in a family home will probably end up bunking together (married couples) or on bunkbeds (kids). A family will probably be having dinner all at the same time, and so will require a larger dining area than a group of flatmates, but the flatmates might prefer to have more showers.

Speaking of bathrooms, is there a reason you have a bathroom per bedroom? Growing up we had one for three bedrooms, but I guess I wouldn't be surprised if luxury dormitories had one per room.

Your houses seem much more generous than the IPMC.

In terms of dining/living space, yes, as explained above. In terms of sleeping space, no—the minimum is 50 ft2 per occupant under § 404.4.1, and I have kept as close to that minimum as possible. I make a bedroom larger than 50 ft2 per occupant only when I am forced to do so in order to keep the house rectangular.

Is there a reason you have a bathroom per bedroom?

I personally have found it quite annoying to live in a house with three bedrooms and one bathroom.

(In a dwelling unit, IPMC § 502.1 requires only one bathroom, regardless of the number of bedrooms. However, in a "rooming house" (defined in § 202; an apartment building with bathrooms shared between units), § 502.2 requires a minimum of one bathroom per four "rooming units", and that requirement can be pressed into service for houses as well.)