This 3-bedroom, 2-bath single-story Hesperia home offers 1,720 sq ft of recorded living space on a 10,000 sq ft corner lot, plus an approximately 200 sq ft permitted sunroom that expands usable space beyond the stated square footage. An attached garage, dedicated RV parking with a 30-amp electrical hookup, and beautifully landscaped front and back yards add everyday function and flexibility. Inside, tile flooring provides an easy-care foundation, while replacement windows and sliding doors contribute to energy efficiency. The fireplace was converted from wood burning to gas for cleaner, more convenient use. USB-equipped outlets accommodate today's devices, while the permitted sunroom off the main living area creates a natural extension of the home for relaxing, entertaining, or other everyday uses. Energy and electrical upgrades add value. A paid-off whole-house water filtration system is included. Tesla solar is leased at $129/month, with no electric bill for approximately 6.5 years, per seller. Electrical panels were also updated to support solar and modern power needs. The outdoor setting offers a compelling combination of space and improvements. Established landscaping enhances both the front and backyard, while two backyard pergolas, a swing, covered patio, partially block-wall, vinyl and wood fencing, and a storage shed create multiple places to relax and enjoy the property. The landscaping and fencing give the backyard a secluded, sanctuary-like feel while providing practical outdoor space. RV owners have more than ample side-yard access. Extra concrete provides dedicated RV parking with a 30-amp electrical hookup, adding useful infrastructure for recreational vehicles. The attached garage also features a newer garage door opener with a lifetime warranty, per seller. With a 10,000 sq ft corner lot, permitted sunroom, dedicated RV setup, Tesla solar, paid-off water filtration, replacement windows and sliders, electrical improvements, gas fireplace, established landscaping, two pergolas, and covered outdoor space, 13377 Mountain Drive brings together upgrades that are difficult to capture through square footage alone.