1808 Black Mountain Road, Hillsborough.

1808 Black Mountain Road

  • 3


  • 2


  • 1,980 sq ft

    Home Size

  • 22,651 sq ft

    Lot Size


Buyer's Agent


  • Built in


  • Listed

    6 months ago

  • Neighborhood



Carolands saw a significant drop in overall sales in 2022. By year’s end, only 17 homes had sold in Hillsborough’s second-most popular neighborhood, equal to the total sold in 2020 and 2019 but down 41% from 2021’s record-setting total of 29. Average and median prices, which rose impressively in 2021 (26% and 22%, respectively, from 2020) fell by 3% and 4%, while average price per square foot, which increased by 20% year-over-year in 2021, rose another 7% to $1,447. Average DOM rose precipitously to 60, an increase of 138% from 2021’s 25, while price per square foot and sale-to-list price ratio remained somewhat static.

 To view a detailed google map of the Carolands neighborhood, click here. The MLS area is 446.


  • A wide range in real estate prices

  • Has newer and larger properties as well as older and traditional homes

  • Spread out, ranch style homes with spacious, half-acre-and-up lots

  • Many homes have San Francisco Bay views


  • Inventory is typically on the lower side

Explore Carolands

Equally known for its pleasant, rolling streets as well as multi-million dollar estates, Hillsborough represents the pinnacle of exclusive yet laid back peninsula homes. With close proximity to all major roads, yet still secluded and private enough for the most discriminating homeowner, Hillsborough’s large but subtle homes and roads-without-sidewalks “woodsy” feel apppeal to many. And, it’s also one of the best and most picturesque towns on the peninsula for a Saturday jog!

The public school system in Hillsborough is among California’s finest, with an excellent faculty to student ratio and a successful technology program. Hillsborough’s Crocker Middle School is well known in the area for its excellent preparation of its students for high school and beyond. And, there are also three excellent private schools in Hillsborough: the Bridge School, which serves students with physical and speech impairments, the Nueva School, a noted elementary school, and Crystal Springs Uplands School, a well established and respected elementary through high school.

As of the year 2000, Hillsborough was the highest income place in the United States for cities of a population of 10,000 or more. The town is six square miles, of which 238 acres are open space and cannot be developed. It’s name comes from the hometown of William Davis Merry Howard in New Hampshire, who visited the peninsula in 1864 as a 16 year old and convinced his shipping magnate father to buy Rancho San Mateo (including what is today the city of San Mateo).

As Hillsborough is all single family homes, the town contributes a portion of the budget to the Burlingame and San Mateo libraries, and shares a fire department with Burlingame, called Central County Fire.

Special Yearly Event: The Concours d’Elegance, benefiting the Hillsborough Schools Foundation, held each August on the golf course started in 1956 by Hillsborough mothers.

Ranch style homes
$4.5m ranch style homes up to $10m+ estates, all with minimum half acre lots
Exclusive town
One of the most exclusive towns in the Bay Area, ranked alongside Atherton, Woodside, Belvedere, Ross, and Tiburon
Single family residential with large lots
Hillsborough is only single-family residential - no businesses, condos/townhomes, or retail, but just minutes to both downtown Burlingame and San Mateo
Explore Hillsborough

Hillsborough is a town of rare affluence, number five on Bloomberg Businessweek’s 2009 list of “Wealthiest Towns in America.” It’s a unique place, with no shops, no restaurants, and no commercial entities of any kind within its borders. Its citizens live on half-acre minimum lots, many behind gates and rows of tall trees.

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