Room Addition Cost Woodland Hills CA 2026 — Full Price Guide

Room Addition Cost Guide for Woodland Hills, CA — 2026

Woodland Hills room additions benefit from the neighborhood’s best feature: space. With lot sizes frequently ranging from 8,000–20,000+ sq ft in the flat areas and larger on the hillside, Woodland Hills homeowners have more room to add than virtually anywhere else in the west Valley. Combined with home values of $1.8M–$4M+, this creates excellent conditions for primary suite additions, multi-room additions, and second story projects that would be constrained on smaller lots in Sherman Oaks or Studio City. APLA Construction (CA Lic #1136359) handles room additions throughout Woodland Hills, managing all LADBS permits, soils engineering for hillside properties, and all construction trades.

Woodland Hills Room Addition Costs by Scope (2026)

Scope 1: Bedroom Only ($88,000–$158,000)

What you get: Single bedroom addition, 150–250 sq ft. Foundation, framing, roofline extension, electrical, insulation, drywall, flooring, windows, and finishes. LADBS plan check and permit.

Best for: Woodland Hills homes at $1.5M–$2M needing a bedroom count increase without bathroom changes.

Scope 2: Primary Suite ($172,000–$308,000)

What you get: Primary bedroom (180–285 sq ft) with attached primary bathroom (65–115 sq ft) and walk-in closet. In Woodland Hills, primary suite additions on large flat lots are often the most straightforward additions in the Valley — generous rear yards, flat terrain, and conventional ranch-style homes that tie additions in easily. Full MEP and finishes.

Best for: Woodland Hills homes at $1.8M–$3M where the primary suite is the defining resale limitation.

Scope 3: Large Multi-Room Addition 900–1,400 sq ft ($400,000–$620,000)

What you get: Woodland Hills’s large lots enable larger additions than most Valley communities. 900–1,400 sq ft of new finished space — primary suite, additional bedroom, family room or bonus room. This is a Woodland Hills-specific scope that is simply not feasible on the smaller lots of Sherman Oaks or Studio City.

Scope 4: Full Second Story ($360,000–$640,000+)

What you get: Second story above an existing Woodland Hills ranch home, approximately doubling square footage to 3,200–4,800 sq ft. Woodland Hills’s larger homes (1,800–2,800 sq ft single-story) produce particularly large second stories at resale values that support the investment strongly.

Woodland Hills Hillside Addition Notes

Properties in Woodland Hills above Mulholland Drive and in the Woodland Hills Estates area involve hillside construction. Hillside additions require soils reports ($3,500–$8,000), potential grading permits, and hillside-specific structural engineering. APLA evaluates hillside requirements for every Woodland Hills addition project before design begins — at no cost.

Frequently Asked Questions — Room Addition Cost Woodland Hills CA

How much does a room addition cost in Woodland Hills in 2026?

Bedroom only: $88,000–$158,000. Primary suite: $172,000–$308,000. Large multi-room 900–1,400 sq ft: $400,000–$620,000. Second story: $360,000–$640,000+. Woodland Hills costs are comparable to Encino and slightly below Sherman Oaks for equivalent scopes.

Can I build a larger addition in Woodland Hills than in other Valley cities?

Yes. Woodland Hills’s larger lot sizes — many properties at 9,000–20,000+ sq ft — enable larger additions while maintaining setback compliance. An addition scope that would consume most of the available rear yard in Sherman Oaks leaves substantial garden remaining in Woodland Hills.

How long does a room addition take in Woodland Hills?

Bedroom only: 4–7 months. Primary suite: 5–9 months. Large multi-room: 7–12 months. Second story: 9–16 months. LADBS Van Nuys office (serves Woodland Hills): plan check 5–9 weeks for structural additions. Hillside properties: add 4–8 weeks for soils review.

Does APLA do room additions in Woodland Hills?

Yes. APLA (CA Lic #1136359) handles room additions throughout Woodland Hills, including hillside properties. Call (818) 818-4419 for a free in-home estimate.

Get a Free Estimate for Your Woodland Hills Room Addition

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

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