The sophistication of classic California living is beautifully expressed in this North Upland custom home by Gula Homes. Set on a prominent 20,000 sq. ft. corner lot just off historic Euclid Avenueone of Upland’s most prestigious and tree-lined corridorsthis single-story, 4-bedroom, 5-bath, 5,038 sq. ft. residence embodies timeless elegance, architectural scale, and California warmth. Behind its stately faade, a grand foyer introduces an interior defined by craftsmanship and proportion, where high vaulted and tray ceilings, expansive windows, and refined finishes reflect the builder’s artistry. The formal living and dining rooms create a gracious flow for entertaining, while the chef’s kitchenappointed with granite counters, professional-grade appliances, and a large informal dining areaopens seamlessly to the family room and full wet bar. Every space invites connection, light, and effortless indoor-outdoor living. The private wing reveals a luxurious primary suite designed as a tranquil retreat, featuring a fireplace sitting area, custom walk-in closet, and a stunning Carrera-marble bath with dual vanities, a soaking tub, and walk-in shower. Three additional bedroom suites provide comfort for family and guests, each thoughtfully designed with space and privacy in mind. Outdoors, resort-style living unfolds within a lush tropical setting. A sparkling pool and spa are surrounded by mature landscaping, multiple patios, and a built-in bar and outdoor kitchenperfect for entertaining or quiet evenings at home. Completing this exceptional property the six-car garage is a destination of its own, finished with black-and-white flooring, cabinetry, and workshop space Every detail of 141 W. 21st Street speaks to a life of refinement, comfort, and enduring quality. A truly remarkable opportunity to own one of North Upland’s most distinguished residences, just moments from the historic charm of Euclid Avenue.