Guest House & ADU

Bel Air Guest House & ADU Construction: Luxury Options 2026

February 5, 2026

13 min read

By ESV Prime Construction Team

Building a guest house or ADU on your Bel Air estate? Premium design options and construction costs.

Bel Air estates often include guest houses, staff quarters, and accessory dwelling units.

Bel Air Secondary Structure Costs

Pool House (400-800 sq ft): $200,000-$400,000

Guest Suite (600-1,000 sq ft): $350,000-$600,000

Full Guest House (1,000-2,500 sq ft): $600,000-keywords: ['room addition studio city', 'home addition toluca lake', 'second story addition', 'contractor studio city', 'studio city remodeling', 'toluca lake contractor', 'home expansion san fernando valley'],

},,500,000

Luxury ADU (800-1,200 sq ft): $400,000-$750,000

Add a guest house or ADU to your Bel Air property. Call ESV at (818) 883-8753!

Written & Reviewed by

Ari, Licensed General Contractor

Founder & CEO, ESV Prime Construction Specialists, Inc.

With over 20 years of hands-on experience in residential construction across Los Angeles County, Ari holds California Contractor's State License #1065151 (Class B General Building). Every article is based on real project experience and current LA County building codes to ensure homeowners get accurate, actionable information for their construction projects.

CSLB #106515120+ Years Experience500+ Projects Completed