Kelso Custom Builders, Inc.

Kelso Custom Builders, Inc. is a full-service custom home builder and general contractor based in Phoenix, Arizona, serving homeowners throughout the Greater Phoenix area. Led by founder Mark Kelso, the company specializes in luxury custom homes, accessory dwelling units (ADUs), guest houses, home additions, casitas, and large-scale home remodeling projects. With a hands-on approach and a commitment to exceptional craftsmanship, Kelso Custom Builders transforms clients’ ideas into beautifully designed homes tailored to their lifestyle, budget, and long-term needs.

From initial design and permitting through construction and final finishing touches, Kelso Custom Builders manages every phase of the building process. The company emphasizes personalized service, transparent communication, and meticulous attention to detail, ensuring each project is completed with quality workmanship and no hidden surprises. Whether building a forever home, expanding an existing property, or creating a multigenerational living space, Kelso Custom Builders delivers a seamless design-build experience from concept to completion.

Services

• Custom Home Construction
• Luxury Home Construction
• Accessory Dwelling Units (ADUs)
• Guest House Construction
• Casita Construction
• Home Additions
• In-Law Suite Construction
• Multigenerational Home Construction
• Home Remodeling
• Major Home Renovations
• Design & Permitting
• Residential Design-Build
• Project Management
• Construction Planning
• General Contracting

Why Choose Kelso Custom Builders?

• Personalized design-build approach
• Founder-led project management and oversight
• Licensed Arizona residential contractor
• Specialists in luxury custom homes and ADUs
• Comprehensive design and permitting services
• Transparent pricing with no hidden costs
• High-quality craftsmanship and attention to detail
• Seamless project management from concept to completion
• Strong reputation for communication and customer satisfaction
• Free project consultations