Nearly half of Los Angeles’s housing stock was built before 1970. Many of these homes are charming, well-located, and structurally sound — but they come with specific challenges that buyers should understand before making an offer. This guide walks you through the most common issues in LA’s post-war era homes and how to evaluate them.
The Post-War Housing Boom
The 1940s through 1960s saw a massive expansion of residential neighborhoods across the San Fernando Valley, South Bay, and East Los Angeles. Millions of homes went up quickly during this period, often built to standards that have since been updated by California code. Understanding the era when a home was built tells you a lot about what to expect.
Aging Plumbing Systems
This is the most commonly overlooked issue in older LA homes. Homes built before 1970 almost universally used galvanized steel pipes for water supply lines. Galvanized pipe corrodes from the inside out, progressively narrowing the interior diameter over decades. Signs of galvanized pipe problems include:
- Low water pressure throughout the home
- Discolored water (brown or rust-tinted) from taps
- Uneven pressure between fixtures
- Visible corrosion at exposed pipe sections
Full galvanized pipe replacement (repiping) typically costs $8,000–$15,000 for a standard 3-bedroom home, depending on access difficulty and square footage. This is a significant but often necessary investment in homes from this era.
Electrical Systems
Homes from the 1950s and 1960s were wired for far lower electrical loads than modern homes require. Common issues include:
- Undersized panels: 60-amp panels were standard then; modern homes need 200 amps
- Knob-and-tube wiring: Found in very old homes, it lacks a ground wire and is not compatible with modern GFCI requirements
- Dangerous panel brands: Federal Pacific Stab-Lok and Zinsco panels, found in many 1960s–1980s homes, have known failure rates and are considered fire hazards by most electricians and insurers
Foundation and Structure
Los Angeles sits on a complex network of active fault systems. Older homes may have:
- Raised foundations: Require seismic bolting to the mudsill if not already done
- Cripple walls: Short walls above the foundation that can collapse in earthquakes if unbraced
- Soft-story construction: Buildings with open ground floors (garages, carports) are particularly vulnerable
Asbestos and Lead
Homes built before 1978 may contain lead paint. Homes built before 1980 may contain asbestos in floor tiles, pipe insulation, popcorn ceilings, and roofing materials. Neither is necessarily a deal-breaker, but both require professional assessment and proper remediation if disturbed.
What to Do Before You Make an Offer
Always request a thorough home inspection before buying any older LA home. Specifically ask your inspector to evaluate:
- Plumbing material (galvanized vs. copper vs. PEX)
- Electrical panel brand and amperage
- Foundation type and seismic retrofitting status
- Roof age and condition
- Presence of asbestos or lead-containing materials
For a comprehensive inspection checklist, see our Home Inspection Checklist for LA Buyers.