Room Addition Contractor in Chatsworth CA — Costs & Planning (2026)

Room Addition Contractor in Chatsworth, CA — Costs and Planning (2026)

Chatsworth’s large lots — including horse properties with 10,000–20,000+ sq ft lots — provide exceptional room addition potential. With flat terrain throughout most of the neighborhood, single-story room additions proceed without hillside construction premiums. Home values of $700K–$1.1M support addition investment, and many Chatsworth homeowners are adding master suites, family rooms, and dedicated home offices to properties they plan to retain long-term. APLA Construction (CA Lic #1136359) builds room additions throughout Chatsworth.

Room Addition Costs in Chatsworth (2026)

• Bedroom addition (200–300 sq ft): $60,000–$105,000
• Master suite addition (400–600 sq ft): $82,000–$155,000
• Family room expansion (400–600 sq ft): $72,000–$142,000
• Home office addition (200–300 sq ft): $55,000–$92,000
• Large addition (800–1,200 sq ft on horse property): $155,000–$265,000

Frequently Asked Questions — Room Addition Chatsworth

How much does a room addition cost in Chatsworth in 2026?

Master suite: $82,000–$155,000. Family room: $72,000–$142,000. Bedroom: $60,000–$105,000. Chatsworth is affordable west Valley pricing — flat lots, large properties, no hillside complexity.

Can I add on to my horse property in Chatsworth?

Yes, subject to lot coverage limits and setback requirements. LADBS regulates additions in Chatsworth (City of LA). Large Chatsworth parcels typically have ample room for additions while meeting setback requirements. APLA will assess your specific parcel.

Does APLA build room additions in Chatsworth?

Yes. APLA (CA Lic #1136359) serves Chatsworth, West Hills, Canoga Park, Granada Hills, and the west Valley. Call (818) 818-4419 for a free estimate.

Start Your Chatsworth Room Addition

Call: (818) 818-4419
Email: info@aplaconstruction.com
CA General Contractor License #1136359

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