There are three features bound to pique our deep interest: window seats, roof decks, and built-in storage. Whether it's library shelves, armoires, or custom cabinets, we're a sucker for it every time. These three Philadelphia properties – in neighborhoods rife with new, sleek, minimalist construction – feature intricate built-in storage that makes us swoon.

1525-29 E. Montgomery Ave., Philadelphia
Monthly taxes: $699
Tell me all about it: The built-in armoire in one of the four bedrooms in this triple-lot sale seems like a more likely fit for Camelot than Fishtown. We love the intricate woodwork, which calls back to the similarly ornate foyer, staircase, and first-floor fireplaces. Bonus: the third floor is ready for in-laws, a nanny or other long-term guests, with a full bedroom and small kitchen.

890 N. 25th St., Philadelphia
Monthly taxes: $477
Tell me all about it: For all of its original oak detailing, this handsome four-bedroom Fairmount home is plenty shiny and new. The kitchen has been renovated and the roof deck looks recent. But we really love the built-in armoire upstairs. Plus, this home features another of our favorite kind of built-ins: a wine refrigerator in the kitchen.

1000 Clinton St. Philadelphia
Monthly taxes: $2,042
Tell me all about it: This Washington Square Federal-style mansion ticks all the built-in boxes. There are built-in bookshelves all over the first floor, a library on the second floor with a built-in wet bar, and a spa-like bathroom on the third floor with a fireplace nestled between twin built-in cabinets. We're in love.