The light in October almost makes seeing 20 consecutive sunset shots on Instagram tolerable. There is something in the air this time of year that makes even the stubbornest curmudgeon want to open the windows and absorb the gloaming. Where in some real estate listings, "light-filled" might be a euphemism for "one window on a dingy wall," in these three Chester County houses, it is a compliment of the highest order.

120 Davis Road, Malvern
$1,600,000
Monthly taxes: $1,079
Tell me all about it: We love this custom, three-bedroom Radnor Hunt property. The vaulted ceilings are home to plenty of skylights, and walls of windows appear in unexpected places, ushering light into lush interiors. The property also includes a greenhouse and a conservatory. Its unusual beauty has made it a stop on a variety of home and garden tours.

297 Indiantown Road, Glenmoore
$1,590,000
Monthly taxes: $1,626
Tell me all about it: With 10 acres of land and three streams in a private, wooded setting, it's a good thing this four-bedroom home offers so much in the way of views. Windows are everywhere in this home, offering light from above and plenty of multi-exposure spaces. Bonus: the property also includes a private tea house.

165 Miller Road, Phoenixville
$1,350,000
Monthly taxes: $1,823
Tell me all about it: This seven-bedroom, 8,898-square-foot farmhouse boasts multiple walls of windows and an expansive all-season room. We especially love the master suite, which offers one such window wall as well as an indoor and outdoor fireplace, private dressing room, en-suite bath and laundry room. Plus, we always love some good window benches.