San Diego Lead Testing Archives | Rarefied Air Environmental

Lead inspector checking door frame with clipboard at home entrance

How Much Lead Is Dangerous: A Home Safety Guide

Written by Rarefied Air | February 16, 2026

Lead hides in plain sight. It can sit in old paint, cling to dust, leach from plumbing, or linger in soil. You cannot see or smell it, yet even small amounts can harm a child’s brain and body. The good news: there are ways to measure and manage lead contamination at home. Recent federal updates

Family reviewing a home with a real estate agent during an inspection

Is Lead Testing Mandatory? What Home Sellers Must Know

Written by Rarefied Air | February 16, 2026

Selling a home can move fast. Lead questions pop up just as quickly, especially for houses built before 1978. The rules are not hard, but they are specific, and missing a step can delay your closing. This guide explains when lead testing is required, what federal law expects from sellers, how state and city rules

Home inspection checklist on clipboard being reviewed at a desk with a calculator

How Much Does a Lead Paint Inspection Cost? Inclusions & Price Range

Written by Rarefied Air | February 16, 2026

Lead paint still hides in millions of U.S. homes built up to the mid-80s. If you are renovating, buying, renting, or just want peace of mind, a professional inspection can tell you where lead is and what to do next. The right test protects your family, helps you comply with rules, and can save money

What is California’s RRP Rule?

Written by Rarefied Air | May 7, 2018

What are the Lead Renovation, Repair and Painting Program Rules in California? The EPA’s 2008 Lead-Based Paint Renovation, Repair and Painting (RRP) Rule, aims to protect the public from lead-based paint hazards associated with renovation, repair and painting activities. The rule requires workers to be certified and trained in the use of lead-safe work practices,

What is the Problem with Lead-Based Paint?

Written by Rarefied Air | April 14, 2018

What is the Problem with Lead-Based Paint? If your house was built before 1978, there may be lead-based paint both inside and outside your house. Lead is a toxic metal and can cause serious health problems if ingested or if lead dust is inhaled. When lead paint starts deteriorating and when lead dust and flakes