Frequently, we hear about various substances in and around our homes that scientists have found to be toxic or hazardous. Furthermore, it’s possible that other materials we now consider safe might later be revealed as harmful. For example, years ago, builders commonly used asbestos shingles or insulation in new home construction. Only after scientists discovered the link between asbestos fibers and lung cancer did the government restrict the use of asbestos-containing material.

So what can you do to find out which, if any, environmental hazards might be affecting your own home?

A good first step is to take a look at Environmental Hazards: A Guide for Homeowners and Buyers, produced by the California Department of Real Estate and the California Department of Health Services. This very useful booklet –– particularly in San Francisco with its abundance of old homes — identifies common hazards, explains their significance, suggests ways to mitigate their harmful effects, and lists sources that provide further information. You’ll find the usual suspects covered: asbestos, formaldehyde, hazardous wastes, lead, mold, radon, as well as other contaminants. Unfortunately, most properties contain one or more of these hazards.

Familiarize yourself with the information in this booklet, both for your own safety and to comply with state law — If you are selling your home in California, you are legally obligated to disclose to the buyer the existence of any hazards on or affecting the property. However, more important than any legal requirement, should be your fundamental desire to make your home as safe as possible. Likewise, if you are buying property, be sure to hire the appropriate experts for a thorough inspection. A licensed, experienced inspector can determine the presence of any environmental hazards. If such hazards are indeed present, your inspector can then assess whether they pose a health risk and suggest mitigation options.