San Francisco International Airport handles over 55 million passengers annually, and the flight paths serving its four runways pass directly over some of San Mateo County's most desirable residential neighborhoods. For homebuyers, understanding airplane noise is not just about comfort — it directly affects property values, resale potential, and quality of life. Here is what you need to know.
How SFO Flight Paths Work
SFO operates two sets of parallel runways. During normal operations, arrivals approach from the southeast over the Bay, which minimizes noise over residential areas. However, during certain weather conditions — particularly when fog rolls in — the FAA shifts to alternative approaches that route aircraft directly over Peninsula neighborhoods at lower altitudes.
The NextGen satellite-based navigation system, implemented over the past decade, has concentrated flight paths into narrower corridors. While this improved efficiency, it also increased noise intensity for neighborhoods directly under these concentrated paths, a change that sparked significant community pushback.
Most Affected Neighborhoods
South San Francisco and San Bruno
These communities sit closest to SFO and experience the most consistent noise exposure. Homes near the Westborough and Crestmoor neighborhoods in South San Francisco fall within the 65-decibel noise contour, the threshold at which the FAA considers noise levels significant. Property values here reflect a measurable discount of 5 to 10 percent compared to similar homes farther from flight paths.
Millbrae
Millbrae's proximity to SFO means arrivals and departures are audible throughout much of the city, particularly in the Meadows and Mills Estates neighborhoods. However, Millbrae's BART access and excellent schools partially offset the noise discount, making it a value play for buyers who can tolerate the sound.
Burlingame
The eastern portions of Burlingame, particularly neighborhoods near the Bayshore, experience moderate airplane noise. The Burlingame Hills area to the west sees significantly less impact due to elevation and distance from flight paths. This noise gradient creates meaningful price differences between east-side and west-side properties.
San Mateo
Central and eastern San Mateo neighborhoods, including the Fiesta Gardens and Shoreview areas, fall under approach paths during certain wind conditions. The noise is intermittent rather than constant, which makes it less of a factor for many buyers but still worth evaluating during property visits at different times of day.
Foster City and Redwood Shores
These waterfront communities occasionally experience overflight noise, particularly during southeast departures. The impact is generally moderate compared to cities closer to the airport, but buyers should visit during peak flight hours — typically early morning and late afternoon — to gauge their personal tolerance.
How Noise Affects Property Values
Research consistently shows that properties within the 65-decibel noise contour sell for 5 to 15 percent less than comparable homes outside it. The discount varies by neighborhood desirability, school quality, and commute access. In highly sought-after areas like Burlingame, the discount is smaller because other amenities compensate. In less differentiated neighborhoods, the impact is more pronounced.
What Buyers Should Do
- Visit at multiple times. Tour the property during morning and evening peak flight hours, not just mid-afternoon when traffic is lighter.
- Check the SFO Noise Abatement Office website. They publish current noise contour maps and monthly noise reports by neighborhood.
- Evaluate the home's insulation. Modern dual-pane windows and proper insulation can reduce interior noise by 25 to 35 decibels. Older homes may benefit from window upgrades.
- Consider the value opportunity. If noise does not bother you, neighborhoods with noise discounts offer a way to buy into excellent school districts and commute corridors at below-market prices.
Airplane noise is one of the most overlooked factors in Peninsula real estate. I help my clients evaluate it objectively so they can make confident decisions. If you are considering a purchase in any of these neighborhoods, let's talk through the specifics.