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About this home
A trophy resort-style estate of three separate fully remodeled three structures, sitting on two parcels of approximately 1.69 level, usable acres on Round Hill in the Bel Aire neighborhood of Belvedere Tiburon: a 7,489 sqft main residence, a detached two-story guest house, and a pool house. The main residence places the entire main living level on one continuous floor, with San Francisco skyline, Golden Gate Bridge, and Bay Bridge views from the main living spaces and additional bedrooms below. Across the compound, ten rooms of flexible accommodation as suites, staff quarters, gym, office, or media room, nine bedrooms and six full baths and a half bath in the main house, plus more than 8,000 sqft of total living space, suited to multi-generational living within a single-family estate. Guest house, approximately 1,200 sqft, remodeled in 2023 with new HVAC and its own unobstructed San Francisco skyline and Golden Gate Bridge views. Tennis court, pool, spa, and pool house on level lawns: a built-in staycation. Six-car garage plus four-car carport for ten covered spaces, with generous guest parking. The second parcel provides lasting privacy and view protection. Minutes to downtown Tiburon and the Tiburon ferry, within the Reed Union School District.
Single-familyProperty Type
1968Year Built
1.02 acresLot Size
$2,036Price/Sq.Ft.
6 car garageParking
Listed by Lily Garipova•DRE #02010731• Centermac Realty, Inc.
A trophy resort-style estate of three separate fully remodeled three structures, sitting on two parcels of approximately 1.69 level, usable acres on Round Hill in the Bel Aire neighborhood of Belvedere Tiburon: a 7,489 sqft main residence, a detached two-story guest house, and a pool house. The main residence places the entire main living level on one continuous floor, with San Francisco skyline, Golden Gate Bridge, and Bay Bridge views from the main living spaces and additional bedrooms below. Across the compound, ten rooms of flexible accommodation as suites, staff quarters, gym, office, or media room, nine bedrooms and six full baths and a half bath in the main house, plus more than 8,000 sqft of total living space, suited to multi-generational living within a single-family estate. Guest house, approximately 1,200 sqft, remodeled in 2023 with new HVAC and its own unobstructed San Francisco skyline and Golden Gate Bridge views. Tennis court, pool, spa, and pool house on level lawns: a built-in staycation. Six-car garage plus four-car carport for ten covered spaces, with generous guest parking. The second parcel provides lasting privacy and view protection. Minutes to downtown Tiburon and the Tiburon ferry, within the Reed Union School District.
Public Records
Jan 29, 2014
Sold
$5,350,100
$714/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$74,159 (+0.9%)
$4,126,056 + $2,365,150
$6,491,206
2025
$73,482 (+4.2%)
$4,126,056 + $2,365,150
$6,491,206
2024
$70,548 (+1.9%)
$4,045,173 + $2,318,786
$6,363,959
2023
$69,217 (+1.7%)
$3,965,874 + $2,253,723
$6,219,597
2022
$68,064 (+1.7%)
$3,888,126 + $2,209,540
$6,097,666
2021
$66,923 (+1.2%)
$3,811,896 + $2,166,220
$5,978,116
2020
$66,154 (+2.3%)
$3,737,184 + $2,123,763
$5,860,947
2019
$64,676 (+1.4%)
$3,698,871 + $2,082,400
$5,781,271
2018
$63,760 (+1.5%)
$3,626,370 + $2,021,976
$5,648,346
2017
$62,823 (+4.4%)
$3,485,592 + $1,943,481
$5,429,073
2016
$60,183 (−0.4%)
$3,485,592 + $1,943,481
$5,429,073
2015
$60,401 (+1.2%)
$3,417,249 + $1,905,375
$5,322,624
2014
$59,658 (+217.5%)
$3,500,000 + $1,750,000
$5,250,000
2013
$18,787 (+2.4%)
$3,500,000 + $1,750,000
$5,250,000
2012
$18,353 (+1.7%)
$101,423 + $1,435,047
$1,536,470
2011
$18,049 (+1.0%)
$99,435 + $1,406,914
$1,506,349
2010
$17,870 (+0.8%)
$97,486 + $1,379,332
$1,476,818
2009
$17,720 (+7.4%)
$96,757 + $1,369,027
$1,465,784
2008
$16,499
$96,987 + $1,372,281
$1,469,268
Public record
Public record
Zoning
Permits
Beds
9
Baths
7
Stories
—
Lot width
—
Lot depth
—
Lot size
1.02 Acres
Year renovated
1988
Finished Sq. Ft.
7,489
Unfinished Sq. Ft.
—
Total Sq. Ft.
7,489
Year built
1968
Style
Single Family Residential
County
Marin County
APN
039-171-24
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 19, 2026.
RO-1
Residential Open 1 Zone
The RO zone is intended to promote and encourage the maintenance of a suitable environment for low-density, single-family development on lots larger than those typically found in the R-1 zone.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Senior
Housing-Other
Park & open space
Sep 18, 2025 • Final
Building residential
Perform exterior improvements on the building.
Remodel
Sep 4, 2022 • Final
Construction combo
Perform an interior remodel.
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 79° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
13 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Tiburon, CA • 94920
Average low and high temperatures (°F)
59
48
60
49
65
52
62
51
66
53
66
53
67
56
70
57
70
59
70
57
61
51
56
48
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
83/ 100
Very good sunlight
Sunscore
This home receives average direct sun exposure in Tiburon. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.3 hrs
6.4 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 280 Round Hill Rd
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $5,400,000 and $15,000,000.
Nearby comparable homes
The Redfin Estimate uses 5 recent nearby sales, priced between $5.4M to $15.0M.