Off Market Aug 2025 for $5.5M

$6,888,796

Est. refi paymentEst. refi $34,051/mo

•

4,608

sq ft

123 Round Hill Rd, Tiburon, CA 94920

About this home

This recently rebuilt contemporary home (completed in 2016) sits on a secluded acre with sweeping views of Belvedere Lagoon and the San Francisco skyline. Surrounded by majestic oaks, it offers privacy, serenity, and refined design in a tranquil, park-like setting. Inside, wide-plank hardwood floors anchor the dramatic entry and main level. The spacious living room features custom built-ins, a gas fireplace, and surround sound. The chef's kitchen includes a butcher block island, farmhouse sink, dual ovens, walk-in pantry, and flows into the dining area and glass-enclosed, 550-bottle wine cellar. The primary suite is a retreat with abundance of natural light, heated bathroom floors, soaking tub, dual vanities, custom cabinetry, and dual closets. Downstairs are three en-suite bedrooms, a media room, large laundry, and 1,225 sq ft of finished storage. The bottom level can be an office, guest suite, creative space or all 3! It includes a lounge with designer bath, and opens to a 1,000 sq ft patio with above ground hot tub. Expansive wraparound decks offer panoramic Bay and city views. A vegetable garden, rainwater system, wine barrel bar, smart-home tech, and full-home generator complete this Tiburon sanctuary where luxury meets nature.

Single-familyProperty Type

1957Year Built

1.04 acresLot Size

$1,495Est. Price/Sq.Ft.

2 garage spacesParking

Listed by Lena Lionetti •DRE #02002764 • Golden Gate Sotheby's International Realty

•415-798-0034 (agent)

•l.lionetti@ggsir.com (agent)

Listed by Susan Hewitt •DRE #00996144 • Golden Gate Sotheby's International Realty

•415-407-8349 (agent)

•team@TheGoldenGateGroup.com (agent)

Redfin checked: 2 minutes ago

•Source:BAREIS #325053375

Redfin Estimate

$6,888,796

$1.3M since sold in August 2025$489K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 18.2% lower than the average sale price ($8.42M) of 4 comparable homes.

SOLD APR 10, 2026
$7,600,000
A
5 beds5 baths4,385 sq ft
17 Tanfield Rd, Tiburon, CA 94920
SOLD MAY 29, 2026
$9,850,000
B
5 beds5.5 baths5,965 sq ft
205 Golden Gate Ave, Belvedere, CA 94920
SOLD JUL 16, 2026
$4,877,000
C
4 beds4 baths2,625 sq ft
1754 Lagoon View Dr, Tiburon, CA 94920
SOLD JUL 6, 2026
$11,350,000
D
6 beds5.5 baths5,345 sq ft
616 Ridge Rd, Tiburon, CA 94920

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Earn from this home

Sell

$2,135,134

Est. take-home

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Refinance

Est. cash available

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Rent

$11,927/mo

Redfin rental estimate

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Market trends in 94920, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.3%

1.0% MoM

Median sale price

$3.5M

$54K MoM

Avg. days on market

27d

0 days MoM

Recently sold homes

1 MoM

New listings for sale

OPEN SAT, 4PM TO 7PM
$1,895,000
2 beds1 bath871 sq ft
2336 Mar East St, Tiburon, CA 94920
OPEN SUN, 2PM TO 4PM
$2,550,000
3 beds2 baths1,650 sq ft
22 North Ter, Tiburon, CA 94920
OPEN SUN, 1PM TO 4PM
$6,295,000
5 beds5 baths4,401 sq ft
174 Stewart Dr, Tiburon, CA 94920
$4,400,000
4 beds3.5 baths4,390 sq ft
59 Via Los Altos, Tiburon, CA 94920
VIDEO TOUR
$17,500,000
5 beds4.5 baths6,721 sq ft
36 Old Landing Rd, Tiburon, CA 94920
VIDEO TOUR
$2,995,000
4 beds2 baths1,962 sq ft
9 East Ter, Tiburon, CA 94920
(415) 901-1700
OPEN SAT, 1PM TO 3PM
$1,198,000
2 beds2.5 baths1,440 sq ft
106 Marinero Cir, Tiburon, CA 94920
(415) 738-7000
OPEN SUN, 2PM TO 4PM
$6,488,000
4 beds4.5 baths4,815 sq ft
207 Taylor Rd, Tiburon, CA 94920
OPEN SUN, 1PM TO 4PM
$3,577,000
3 beds3 baths2,696 sq ft
2 Lagoon Vista Rd, Tiburon, CA 94920
OPEN SAT, 2PM TO 4PM
$599,000
1 bed1 bath672 sq ft
34 Andrew Dr #131, Tiburon, CA 94920
See all

Provided by Redfin

Sale history for 123 Round Hill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$45,254 (+4.0%)

$3,100,000 + $2,498,000

$5,598,000

2024

$43,534 (+2.2%)

$1,654,843 + $2,142,844

$3,797,687

2023

$42,594 (+2.0%)

$1,622,403 + $2,100,833

$3,723,236

2022

$41,760 (+1.7%)

$1,590,597 + $2,059,650

$3,650,247

2021

$41,078 (+0.8%)

$1,559,412 + $2,019,267

$3,578,679

2020

$40,734 (+1.8%)

$1,528,848 + $1,979,683

$3,508,531

2019

$40,001 (+1.7%)

$1,513,174 + $1,959,389

$3,472,563

2018

$39,340 (+1.5%)

$1,483,515 + $1,920,981

$3,404,496

2017

$38,765 (+8.5%)

$1,425,924 + $1,846,404

$3,272,328

2016

$35,744 (+31.8%)

$1,425,924 + $1,846,404

$3,272,328

2015

$27,115 (+525.3%)

$1,397,965 + $1,680,200

$3,078,165

2014

$4,336 (+25.2%)

$89,985 + $115,804

$205,789

2013

$3,463 (+4.3%)

$89,985 + $115,804

$205,789

2012

$3,322 (+4.2%)

$89,578 + $115,282

$204,860

2011

$3,189 (+4.1%)

$87,822 + $113,022

$200,844

2010

$3,064 (+4.1%)

$86,101 + $110,806

$196,907

2009

$2,943 (+2.3%)

$85,458 + $109,978

$195,436

2008

$2,875

$85,661 + $110,240

$195,901

Tax history for 123 Round Hill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$45,254 (+4.0%)

$3,100,000 + $2,498,000

$5,598,000

2024

$43,534 (+2.2%)

$1,654,843 + $2,142,844

$3,797,687

2023

$42,594 (+2.0%)

$1,622,403 + $2,100,833

$3,723,236

2022

$41,760 (+1.7%)

$1,590,597 + $2,059,650

$3,650,247

2021

$41,078 (+0.8%)

$1,559,412 + $2,019,267

$3,578,679

2020

$40,734 (+1.8%)

$1,528,848 + $1,979,683

$3,508,531

2019

$40,001 (+1.7%)

$1,513,174 + $1,959,389

$3,472,563

2018

$39,340 (+1.5%)

$1,483,515 + $1,920,981

$3,404,496

2017

$38,765 (+8.5%)

$1,425,924 + $1,846,404

$3,272,328

2016

$35,744 (+31.8%)

$1,425,924 + $1,846,404

$3,272,328

2015

$27,115 (+525.3%)

$1,397,965 + $1,680,200

$3,078,165

2014

$4,336 (+25.2%)

$89,985 + $115,804

$205,789

2013

$3,463 (+4.3%)

$89,985 + $115,804

$205,789

2012

$3,322 (+4.2%)

$89,578 + $115,282

$204,860

2011

$3,189 (+4.1%)

$87,822 + $113,022

$200,844

2010

$3,064 (+4.1%)

$86,101 + $110,806

$196,907

2009

$2,943 (+2.3%)

$85,458 + $109,978

$195,436

2008

$2,875

$85,661 + $110,240

$195,901

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

1.04 Acres

Year renovated

2010

Sq. Ft.

4,608

Year built

1957

Style

Single Family Residential

County

Marin County

APN

058-141-15

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Sep 10, 2027 • Active

Construction combo

ADU

Electrical

Plumbing

Dec 22, 2025 • Final

Roof mounted solar

Install a photovoltaic solar system and energy storage.

Electrical

Solar

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.

Property details

Parking

Parking & Garage Information
Parking Total: 7
Parking Features: Garage Door Opener, Guest Parking Available, Private, Side-by-Side
Garage Spaces: 2
Driveway Sidewalks: Paved Driveway

Interior

Bathroom Information
# of Bathrooms (Total): 6
# of Bathrooms (Full): 5
# of Bathrooms (Partial): 1
Master Bathroom Features: Double Sinks, Radiant Heat, Tub, Window

Bedroom Information
# of Bedrooms (Total): 5
Master Bedroom Features: Balcony, Outside Access, Walk-In Closet, Walk-In Closet 2+

Heating & Cooling
Cooling: Central, MultiZone
Heating: Central, MultiZone

Interior Features
Appliances: Built-In Refrigerator, Dishwasher, Disposal, Double Oven, Hood Over Range, Ice Maker
Fireplaces Total: 1
Fireplace Features: Living Room
Interior Features: Cathedral Ceiling, Open Beam Ceiling, Storage Area(s)
Laundry Features: Cabinets, Dryer Included, Inside Area, Inside Room, Sink, Washer Included
# of Stories: 3

Room Information
Room Types: Bonus Room, Family Room, Kitchen, Laundry, Living Room, Office, Possible Guest, Storage, Wine Cellar
Dining Room Features: Formal Area
Family Room Features: Deck Attached
Kitchen Features: Island, Island w/Sink, Pantry Closet, Stone Counter, Wood Counter
Living Room Features: Cathedral/Vaulted, Deck Attached, View
Main Level: Dining Room, Kitchen, Living Room, Partial Bath(s)
Lower Level: Bedroom(s), Family Room, Full Bath(s)

Exterior

Exterior Features
Patio And Porch Features: Front Porch, Uncovered Deck, Uncovered Patio, Wrap Around Porch
Allows Horses: No
Exterior Features: Balcony

Pool Information
Has Private Pool: No
Has Spa: Yes
Spa Features: Spa/Hot Tub Personal

Property Information
ADU 2nd Unit: No
Property Condition: Updated/Remodeled
Property Type: Residential
Property Sub Type: Single Family Residence

Lot Information
Lot Size Square Feet: 45,359
Lot Size Acres: 1.0413
Lot Size Source: Assessor Auto-Fill
Lot Features: Landscape Front, Low Maintenance

Utilities

Utilities Information
Sewer: Public Sewer

Location

HOA Information
Association YN: No

Location Information
Area: Tiburon

Community Information
Senior Community: No

Public facts

Beds: 4
Baths: 6.0
Sq. Ft.: 4,608
Stories: —
Lot Size: 1.04 acres
Style: Single Family Residential
Year Built: 1957
Year Renovated: 2010
County: Marin County
APN: 058-141-15

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Reed Elementary School

Public K-2 • Assigned • 0.2mi

Del Mar Middle School

Public 6-8 • Assigned • 1.1mi

10/10

Redwood High School

Public 9-12 • Assigned • 4.9mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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, 17 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)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.8 hours in June and 5 hours in December, placing it above the U.S. average for solar exposure.

10.8 hrs

5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$6.55M – $7.92M

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Home values near 123 Round Hill Rd

Data from public records.

Address	Redfin Estimate
95 Round Hill Road, Tiburon, CA 4 Beds \| 2.5 Baths \| 3450 Sq. Ft.	$4,538,150
97 Round Hill Road, Tiburon, CA 4 Beds \| 4 Baths \| 3881 Sq. Ft.	$5,603,311

Address	Redfin Estimate
150 Round Hill Road, Tiburon, CA 3 Beds \| 3 Baths \| 2728 Sq. Ft.	$3,986,957
101 Round Hill Road, Tiburon, CA 3 Beds \| 1.5 Baths \| 1640 Sq. Ft.	$2,099,862

Address	Redfin Estimate
91 Round Hill Road, Tiburon, CA 5 Beds \| 4.5 Baths \| 4006 Sq. Ft.	$5,361,876
120 Round Hill Road, Tiburon, CA 4 Beds \| 4 Baths \| 2970 Sq. Ft.	$4,417,921

Property information provided by BAREIS when last listed in 2025. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94920, CA

Sale history for 123 Round Hill Rd

Tax history for 123 Round Hill Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94920

Home values near 123 Round Hill Rd

More real estate resources