Basement Finishing Cost in Los Angeles (2026)
Average cost in Los Angeles
US$17,040 — US$85,200
US$30 — US$75 per sq ft
Cost Breakdown
ItemizedDrywall, flooring, lumber, and fixtures
45%
Framing, electrical, and plumbing trades
35%
LADBS fees and architectural drawings
12%
Unforeseen moisture or structural repairs
8%
Sales Tax at 7.25%
📋What's Included
ScopeTypically Includes
- Framing & drywall
- Basic flooring (LVP or carpet)
- Electrical (outlets & lighting)
- Egress window (if required)
- Painting
- Basic bathroom rough-in
Typically Excludes
- Full basement bathroom
- Built-in bar or kitchen
- Home theater wiring
- Waterproofing (separate cost)
- Permits & inspections
Assumes an unfinished basement with existing concrete floor and basic utilities.
🧮Estimate Your Cost
InteractiveEstimated Cost
US$31,380 — US$47,070
Based on 6 sources and market data for Los Angeles. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$34,394
Today
US$36,320
Basement Finishing in Los Angeles is ↑ 5.6% compared to roughly a year ago — about US$1,926 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Basement Finish Contractors in Los Angeles
Verified providersShulmen Construction LA
1010 S Bedford St, Los Angeles, CA 90035, USA
360 reviews
SB Remodeling Inc.
6513 Hollywood Blvd #216, Los Angeles, CA 90028, USA
49 reviews
Maingreen Remodel & Construction
914 S Robertson Blvd Suite 200A, Los Angeles, CA 90035, USA
145 reviews
AP Remodeling Inc.
5972 Washington Blvd, Culver City, CA 90232, USA
146 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
Homeowners in Los Angeles can expect a 50% to 70% return on investment, with finished basements adding approximately 10% to the overall home resale value.
Permits typically add between $1,200 and $3,000 to the total cost. Specific fees include approximately $624 for a bathroom addition and $839 for a kitchenette, based on LADBS fee schedules.
Converting a basement into a legal Accessory Dwelling Unit (ADU) is significantly more expensive, ranging from $85,000 to $165,000 due to strict seismic codes and Title 24 energy requirements.
Yes, approximately 78% of 2026 basement projects include smart home integration, with essential investments like mesh networks and water detection systems costing between $400 and $1,500.
📊Our Methodology
How we collect dataAggregated from 5+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 1 weeks ago. Updates run weekly. All costs in USD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.