|(Not my bathroom)|
Half of the plans I dismiss nearly instantly based on a few very personal biases:
1) My #1 instant dislike of a house plan is if the kitchen sink is visible from the front door. Kitchens are messy and I wouldn't want my guests--or other visitors--to see mine. Similarly, I don't want to look into a bathroom from the front door either. Yuck.
2) Huge foyers with no coat closet. Another mystery. I guess that's the reason for all the Pins of entryway storage build-outs.
3) Bathrooms without windows. I don't care how big the fan is in the ceiling, it never completely dries out, which equals mold. Not to mention odors. Well, there I did mention odors after all.
4) Dining rooms in the front of the house, completely separated from the kitchen. I do not get this type of layout at all. Is it just for show and people don't use it except for holidays? I think areas like this become dumping grounds and crap collectors.
5) Master bathrooms without any doors. This became popular 20-25 years ago, but does not make sense to me. Bathroom stuff is noisy with water running, toilets flushing, hair dryers, shavers, etc. My own master bedroom has an open vanity area. How can people not disturb their partner if they have a different schedule? They can't. I also hate the requisite giant soaking tub hogging all the natural light from the big window it sits under in every.single.home.plan. Who really uses one?
6) Those weird long narrow dark bonus rooms over garages. I have never personally been in a house that has one. It might be a Midwest thing. We sure get gypped out here on the West Coast because no one has attics or basements. That's why most people's garages are full of stuff and offsite storage facilities are so prevalent. But I digress.
7) Windowless laundry rooms. Why is it that so many home plans have laundry rooms stuffed under stairs, in hallways, or crammed into the tiniest space with no windows? I do not want to trample over dirty laundry on my way inside the house from the garage. Laundry is a Big Damn Daily Deal that needs space for sorting, folding, hanging, handwashing, soaking, and ironing. It is a cluttered and often damp job. I looked at a plan today for a 4000+ square foot house with a two story rotunda entry and the laundry room was miles from the bedrooms, literally 6x9 feet in size, and had a door to the outside, making it a pass through. There was no sink and no storage. Sheesh. Another very large home had the washer and dryer in a hallway closet that was visible from the front door. Classy.
I'd categorize most of these fails as "Looks Good On Paper". And also I'd point the finger at men, because most architects and builders are male. Obviously they are not entirely responsible. However, my dream house would be a lot different from most of the plans I see. I'll show you--when I win the lottery :)