High Voltage Power Lines from around the West Valley.
“Location, Location, Location!” The most important element when buying or selling a home is the one thing you can’t change – it’s location. Because of that, you’ll need to know some location-specific things, naturally occurring and man-made. Like high voltage power lines.
What about this location?
If you own or are thinking of buying a home in Silicon Valley, here are a few location-specific things you want to know upfront so that you can make informed decisions:
- where are the earthquake fault lines?
- where are the geologic hazard zones, such as liquefaction areas?
- where are the flood plains?
- where are man-made things that will negatively or positively impact a home’s value? Things such as
- train lines
- electrical transmission
- school district boundaries
- zip code boundaries
- proximity to entertainment venues
When looking at maps, sometimes these items show up and sometimes they don’t. Realtors and other real estate professionals in the San Jose area often use a Barclay’s Locaide and various online resources to locate the natural hazard areas. There are other tools to help locate school districts and zoning restrictions.
Google maps can help uncover some other areas, like distance to shops and freeways, but sometimes it raises more questions than it answers. For instance, a years ago a Realtor who didn’t know the Belwood of Los Gatos area too well phoned me to ask what a large object showing up on satellite view in the hills of Belgatos Park was. It is just a covered reservoir, but since it was not identified on the map it concerned some buyers. Local knowledge is still extremely helpful.
Mapping the Grid: High Voltage Power Lines
Refrigerator floods are no laughing matter! Last month, my sister in-law’s fridge leaked causing the hardwood floors to pucker and swell, pushing cabinets and even lifting countertops! They’ve had to move out while their kitchen undergoes a massive overhaul. When my refrigerator line broke back in 2012, it was a similar story. The damage was extensive, and repairs were time consuming and expensive! So what can cause leaks and flooding and how can homeowners prevent it?
Causes for Refrigerator Floods and Leaks
Does your refrigerator have an automatic icemaker or a cold-water dispenser? If so, that plumbing is all capable of breaking. What if you don’t have a water line to your fridge? You can still have a leak. Humidity from the air and produce becomes ice or water when cooled. Modern refrigerators have been designed to automatically defrost: ice is melted, flows down a drain, and collects in a drip pan where it is heated (usually via waste heat from the refrigeration system) to evaporate the moisture. If the condensate is not taken care of properly it can become water damage!
Looking a little more closely, here are a few common causes:
Just about every year California amends what sellers are required to disclose, and one change that I think we’ll be seeing a lot of is about home fire hardening. Many agents, including myself, will begin to use the fire hardening disclosure / document (which has already changed once in six months). The current one, as of June 2021, is the C.A.R. Form FHDS, 5/21 Fire Hardening and Defensible Space Advisory, Disclosure, and Addendum.
So what is in this document, who will have to use it, and how can it help buyers and current home owners?
The CAR Fire Hardening and Defensible Space form is a two page document completed by the seller of a residential non-commercial property to notify the buyer of fire hazard zoning, code compliance, and possible vulnerabilities and/or defensible features. Both the buyer(s) and seller(s) sign to acknowledge receipt and consent to comply with the appropriate terms in paragraph 4B.
Who Will Use This Form? Paragraphs 1 and 2: Prerequisites
This disclosure is required for homes (1-4 unit residential properties) in high or very high fire hazard severity zones when the seller must complete a Transfer Disclosure Statement (TDS form). Sellers for California real estate transactions falling within those criteria are obligated to provide specific information contained in this form to the buyer. If these properties were improved or were built before January 1, 2010 there are additional stipulations. However, use is not restricted to properties in these zones.
Owners of residences where the zone is unknown, or those outside of the designated fire hazard zones which are “in, upon, or adjoining a mountainous area, forest-covered land, brush-covered land, grass-covered land, or land that is covered with flammable material,” (Gov’t Code 51182 and 1C in CAR FHDS 5/21 – basically, homes in or near ample kindling) should also make these disclosures if they might be considered materially important. Even when it’s not legally necessary, any homeowner might voluntarily disclose using sections of this form. To show that a home is not in a designated high or very high fire hazard severity zone, sellers simply check the box indicating so in paragraph 2B.
Is the address in a high or very high fire hazard severity zone?
Not all homeowners know if their property is in one of these zones, but it’s the seller’s responsibility to find out! In paragraph 1B the form suggests that a natural hazard zone disclosure company could determine this information (and if you’re selling you may have already ordered a report that would contain those details), but it certainly isn’t the only resource.
Most of Silicon Valley has pre-1978 homes, and most of them contain some amount of asbestos, commonly on the HVAC ducts and, more visibly, in some popcorn or acoustic ceilings. It can also be in less known areas, such as vinyl flooring or perhaps the glue under the flooring. Homes built after 1978 are far less likely to be effected. Asbestos can be found in almost any product, especially in older parts of the home where fire retardancy would be beneficial.
Very few people test their for asbestos in homes. Seeing that a seller has “no reports” on items like asbestos or lead on their home is not uncommon, but it does not mean it is not there, particularly in older properties.
Undisturbed asbestos is not supposed to pose a health risk. I know for a fact that my 1977 built home has asbestos on the boots, where the ducts come up to the heat register. Since it is on the external part of the ducting, not the inside, the air in our house should be clean and free from asbestos.
What is it?
Like mold, asbestos is a naturally occurring substance found in some soils, and sometimes mined. (Click on the image below to see a map of sites in California in which there is or is suspected to have asbestos present.) In the San Jose area, it’s known that asbestos was found or mined at the New Almaden Mine and also in the area near Communications Hill where KB Homes built a large subdivision.
Asbestos is the common name for a group of silicate minerals made of thin, strong fibers, best known for their use as excellent fire retardants. Not many realize that it occurs naturally in certain areas, including California. The most common naturally occurring Asbestos is Chrysotile, often found in serpentine, common to the Sierra foothills and the Coast Ranges.
What does that mean? Since Asbestos are minerals, that means they are generally stable and will not evaporate. However, the mineral can be crushed into a fine dust which will float in air – this is referred to as friable asbestos. Friable asbestos, suspended in air and breathed by humans is a carcinogen linked to the development of lung cancer.
What are the risks of asbestos in homes?
It’s the end of the year and many people are making New Years Resolutions or New Years Goals. Instead of directly focusing on your own health, how about looking into making a more healthy house? Indoor air quality contributes to the health of residents just as much as that extra serving of vegetables or extra thousand steps per day.
When the summer and autumn fires are raging in California, we are all keenly aware of pollutants. We check PurpleAir.com and replace our filthy air filters faster than usual. Some of us even found ourselves buying air quality monitors for the first time, all in hopes of having a healthy house. When the fires get put out, we may not think much about having a healthy home until another “Spare the Air” day is called.
Healthy House Challenges
This last summer, we were one of many families purchasing an air quality monitor (seen in photo, it was around $120 online). We were surprised at the amount of indoor air pollution caused by frying foods. That was info we tripped into – the monitor was on because of the smoky skies, but it was the friend chicken that sent the PM2.5 score soaring into the 400s. And it took hours for it to come back down to normal (in large part certainly because we could not open our doors and windows to air it out). That was a lesson!
One of the least known but perhaps one of the biggest risks involves gas cooking, as well as the use of other gas appliances, in the home. What many cooking aficionados do not realize is that every single time you cook with gas, you also should be using the vent to clear the gas fumes lest you contribute to a buildup of carbon monoxide (and other pollutants) indoors. (Venting is also crucial with other gas appliances such as the furnace and water heater.)
Carbon monoxide detectors are now mandatory in California homes if there are gas appliances, not just at the point of resale but in all houses, condos, town homes etc. – but even the best devices can fail or have the batteries die, so best to avoid relying on them alone and make sure to use care in venting all gas devices whenever in use. There are some studies indicating that gas cooking and the use of other gas appliances indoors may aggravate respiratory conditions such as asthma and increase pulmonary (lung) risk, too. Carbon monoxide is the best known, but not only pollutant, that may come with gas appliances.
Along the same lines, home inspectors suggest that fireplaces with gas logs or jets never fully close, but instead have a small block to keep the damper from sealing completely. This is also so that the carbon monoxide can vent out.
Radon is thought to be a non-issue in California, but Silicon Valley is generally a moderate radon area. Care should be taken particularly in properties with basements and in homes where occupants smoke indoors.
Other issues include mold and dust, which are especially hard on people with allergies or lung disease, but can also irritate eyes. For structures built prior to about 1978, lead may be present too.
When buying or selling residential property in California, the Residential Environmental Hazards booklet is provided. It can be found online via a variety of sources, including the State of California’s website. If you haven’t seen or read this booklet recently, I would like to suggest that you have a look and consider incorporating some of the suggestions and tips in the coming year to make your own home a healthier one:
A last point about this fabulous booklet: do not read right before going to bed!!
Additional information from the World Health Organization can be found here:
WHO Guidelines for Indoor Air Quality: Selected Pollutants (book, 2010)
Here’s to a happy and healthy 2021!
For several years now in California, having a carbon monoxide detector has been required in virtually all homes in The Golden State. This is not a point of sale requirement. It is a requirement for all residential dwellings which burn gas in any capacity (stove, furnace, etc.), or have a fireplace, or an attached garage as a matter of public safety. They are exempt in all electric homes that do not have an attached garage or fireplace.
Where are the carbon monoxide detectors to be placed? The carbon monoxide detectors should be on every level of the home, including the basement. If you live in a multi story home with the garage at the bottom, you do need one at that level also (just inside the door, once you are in the habitable area) as well as on the main floor, bedroom floor, and any other level you may have. In a single story home, just one carbon monoxide detector is sufficient.
Additionally, carbon monoxide detectors need to be in the bedroom area of the home. If a bedroom has a gas fireplace or wood burning stove (or any other fossel fuel source of heat), there must be a CO detector in the room. Otherwise, in the hall is fine. If bedrooms are not all in one part of the home, there needs to be a detector near each bedroom.
The cost of the device ranges considerably – from less than $10 each to more than $200 each. Some are plug in, some battery only, some feature LCD displays. Some are combination smoke detector & carbon monoxide detectors. Nest makes a CO alert, too. We put a First Alert detector in our house, and the cost was around $20 – $30, but there are many brands from which to choose. (You can also buy portable CO detectors.)
Once installed, it should be checked periodically (along with your smoke detectors) to make sure that it is functioning properly.
Remodeling your home? When you apply for permits, be aware that the city or county inspector who visits your property will be looking for smoke and carbon monoxide detectors. If you don’t have them where needed, your remodel will not pass inspection. Your inspector will need to return, and normally that results in an extra cost to you.
Carbon monoxide poisoning can be very dangerous, to the point of death. If you don’t have a detector, go get one immediately.
From the CalFire site (pdf):
From the City of San Jose: http://www.sanjoseca.gov/index.aspx?NID=5344
Is there a radon risk in Silicon Valley homes?
More likely than not, you either own or have shopped for Silicon Valley homes with fireplaces. In that case, you’ve likely also heard tale about the new law that would force homeowners to replace older fireplaces with new gas only ones or decommission them entirely before selling. Let me quash those rumors now – homeowners with wood-burning fireplaces do not automatically need to replace them at the sale of the property at this time. But what’s behind the rumor anyway?
About a year ago, there were proposed regulations in place that were going to make stipulations for home sellers with older fireplace in the San Francisco Bay Area, including San Jose, Los Gatos, and nearby. Amendments have since been made to the ordinance, removing this requirement. These were part of Regulation 6, Rule 3: Wood-Burning Devices, which was adopted in July 2008 to regulate and improve air pollution levels for the health of the Bay Area community (Wood Burning Regulation). Its immediate effect was to enforce Winter Spare the Air Alerts and Mandatory Burn Bans. The regulation also stated numerous rules that would be effective at future dates (mostly beginning November 1, 2015/6), including many that will be passed this year and in the future, up to 2020. So, while you don’t need to worry about replacing your fireplace before you sell, there’s plenty to be aware of when you use, replace, repair, and install your fireplace – and you may still need to replace it.
With 1.4 million woodstoves and fireplaces around the Bay Area, it’s no surprise they make up a major part in the region’s air pollution – approximately one third of winter pollution! That’s greater than the amount of pollution caused by vehicles. Burning solid fuels produces what is known as soot, or more scientifically, PM2.5, which stands for Particulate Matter with diameter of 2.5 microns or less (Ordinance). These particles in the air are a form of pollution which is so fine that when breathed in it can penetrate deep into the lungs and even enter the blood stream. Wood smoke contains a group of compounds that are similar to second-hand cigarette smoke and are likewise hazardous (2012 flier). Studies show that this type of pollution can cause a variety of health conditions which can put undue stress on individuals with weak respiratory or cardiovascular systems. Apparently 1 in 7 Bay Area residents has a respiratory condition, and these folks of course are more vulnerable to problems from pollution. Immediate effects might be watery eyes and coughing, while long-term exposure to polluted air can permanently harm lung function, capacity, and development – possibly instigating diseases like asthma and bronchitis. “Eliminating residential wood burning during a Winter Spare the Air Alert can reduce soot in the Bay Area by 35 tons each day” (Wood Burning Regulations Flier). On top of the particulate pollution, wood smoke also contains a variety of gases, including toxins like dioxin (Wood Burning Regulations Flier).
But why winter? What about summer barbeques? Weather is important in regard to the displacement of these polluters. Spare the Air Alerts are hardly ever called when it’s been raining. Cold, still weather conditions cause the smoky air to become trapped near the ground, allowing pollution to build up to unsafe levels (Flier). When a Spare the Air alert is not called but data indicates worsening conditions there may be an optional compliance health advisory in the form of a Recommended No-Burn Day. And as for summer barbeques – the weather conditions in summer are more prone to heightening levels of ozone than soot, so Summer Spare the Air Alerts are placed based on very different weather and pollution concerns.
Other than pollution, there are still plenty of reasons to not burn. Fires are not a very efficient form of heating, and many fireplaces actually rob your home of heat, sending hot air up the chimney and out of your home. Prevent heat loss (and the need to burn more fuel or crank the thermostat) by keeping your home well insulated and weatherized. Get more efficient heating with an EPA certified device or alternative natural gas or electric heater. (more…)