Set on a corner lot in Orange's historic Fairhaven tract, this is a rare chance to own a genuine work of Mid-Century Modern design. Designed in 1960 by noted firm Anshen & Allen for developer Joseph Eichler, the home pairs landmark architectural pedigree with a level of updating rarely found in homes of this vintage. Step inside and you're greeted by the hallmark open-air atrium and expansive glass walls that blur the line between indoors and out, a signature of the post-and-beam framing that gives these homes their light-filled, low-slung profile. Original windows, doors, ceilings, mahogany-clad walls and posts, and vintage-style fixtures have all been carefully restored, preserving the home's architectural character throughout. The current owners have thoroughly updated the home since purchasing it: fresh paint throughout, the previous flooring replaced with polished concrete and terrazzo tile in the bathrooms, a re-tiled primary shower, a refreshed kitchen with new tile, a mantel, and vents, new appliances, custom closet doors, a five-camera Ring system, and completed termite repairs. Outdoors, a privacy hedge and lush plantings frame a heated resort-style pool and spa, upgraded with new coping, tile, decking, and a pump, complemented by turf and a reconditioned firepit. The entry courtyard features a water-wise desert garden that adds a contemporary counterpoint to the home's period architecture, and the garage now offers epoxy flooring, custom storage, and designer hardware. Spread across a single level, the floor plan preserves its architectural DNA while layering in upgraded finishes and quality craftsmanship. The home offers four bedrooms, two bathrooms, and a two-car attached garage on a spacious 8,500 square foot lot.