Google street view image for 640 Roundhill Rd, Gibson Island, MD 21056

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Sold

$3,614,987

Est. refi paymentEst. refi $2,705/mo

—

•

3 ba

•

4,360

sq ft

640 Roundhill Rd, Gibson Island, MD 21056

About this home

An exceptional waterfront property with magnificent sweeping views of the Magothy River, a heated pool and lots of decking. It is a perfect home for family and for gracious entertaining.

Single-familyProperty Type

1990Year Built

1 acresLot Size

$829Est. Price/Sq.Ft.

1 spaceParking

Source:Public Records

Redfin Estimate

$3,614,987

$1.3M since last sold$54K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 59.1% higher than the average sale price ($2.27M) of 6 comparable homes.

SOLD OCT 2, 2026
$1,150,000
A
5 beds3 baths2,302 sq ft
971 Forest Dr, Arnold, MD 21012
SOLD AUG 20, 2026
$1,700,000
B
4 beds3.5 baths3,194 sq ft
701 Stillwater Rd, Gibson Island, MD 21056
SOLD JUL 10, 2026
$4,900,000
C
5 beds4 baths3,707 sq ft
817 Broadwater Way, Gibson Island, MD 21056
SOLD OCT 23, 2026
$1,600,000
D
4 beds3.5 baths3,608 sq ft
1018 Magothy Ave, Arnold, MD 21012
SOLD JUL 7, 2026
$1,790,000
E
5 beds3 baths2,504 sq ft
1100 River Bay Rd, Annapolis, MD 21409
SOLD JUL 11, 2026
$2,495,000
F
5 beds3.5 baths2,956 sq ft
644 Ayrlie Water Rd, Gibson Island, MD 21056

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Earn from this home

Sell

$3,405,402

Est. take-home

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Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$4,300/mo

Redfin rental estimate

List your home for rent

Market trends in 21056, MD

Last updated October 2026

Sale-to-list price

99.0%

+0.3% MoM

Median sale price

$3.7M

$271K MoM

Avg. days on market

40d

0 days MoM

Recently sold homes

2 MoM

Provided by Redfin

Sale history for 640 Roundhill Rd

Year

Property tax

Land + Additions

Assessment*

2026

$33,354 (+1.3%)

2025

$32,937 (+1.5%)

2024

$32,454 (+3.2%)

2023

$31,449 (+6.5%)

$2,450,000 + $452,000

$2,902,000

2022

$29,519 (+3.1%)

2021

$28,621 (+2.9%)

2020

$27,814 (+3.0%)

$2,150,000 + $334,200

$2,484,200

2019

$27,016 (+5.7%)

2018

$25,555 (+1.0%)

$1,790,000 + $330,400

$2,120,400

2017

$25,304 (−3.2%)

$1,790,000 + $330,400

$2,120,400

2016

$26,131 (−10.7%)

$2,150,000 + $425,900

$2,575,900

2015

$29,267 (+33.9%)

$2,150,000 + $425,900

$2,575,900

2014

$21,851 (+3.9%)

2013

$21,039 (+12.7%)

2012

$18,662 (+5.8%)

2011

$17,643

2010

$17,643 (+15.6%)

2009

$15,261

Tax history for 640 Roundhill Rd

Year

Property tax

Land + Additions

Assessment*

2026

$33,354 (+1.3%)

2025

$32,937 (+1.5%)

2024

$32,454 (+3.2%)

2023

$31,449 (+6.5%)

$2,450,000 + $452,000

$2,902,000

2022

$29,519 (+3.1%)

2021

$28,621 (+2.9%)

2020

$27,814 (+3.0%)

$2,150,000 + $334,200

$2,484,200

2019

$27,016 (+5.7%)

2018

$25,555 (+1.0%)

$1,790,000 + $330,400

$2,120,400

2017

$25,304 (−3.2%)

$1,790,000 + $330,400

$2,120,400

2016

$26,131 (−10.7%)

$2,150,000 + $425,900

$2,575,900

2015

$29,267 (+33.9%)

$2,150,000 + $425,900

$2,575,900

2014

$21,851 (+3.9%)

2013

$21,039 (+12.7%)

2012

$18,662 (+5.8%)

2011

$17,643

2010

$17,643 (+15.6%)

2009

$15,261

*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
Permits

Beds

—

Baths

Stories

Lot width

—

Lot depth

—

Lot size

1 Acre

Year renovated

—

Sq. Ft.

4,360

Year built

1990

Style

Single Family Residential

County

Anne Arundel County

APN

03 35017995320

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 2026.

Oct 21, 2021 • Active

Septic installation

Install new piping for a mechanical system.

Plumbing

Apr 28, 2020 • Final

Residential accessory structure (detached garage/carport, shed, pool, gazebo)

ADU

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

Around this home

Schools

K - 12
Preschool & daycare

Bodkin Elementary School

Public PreK-5 • Assigned • 2.8mi

8/10

Chesapeake Bay Middle School

Public 6-8 • Assigned • 2.8mi

8/10

Chesapeake High School

Public 9-12 • Assigned • 2.8mi

6/10

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

2/10 Fire Factor

0.00% chance of being in a wildfire in next 30 years

8/10 Heat Factor

7 days above 105° expected this year, 15 days in 30 years

6/10 Wind Factor

75% chance of strong winds in next 30 years

3/10 Air Factor

3 unhealthy days expected this year, 4 days in 30 years

Provided by First Street

Historical weather

Gibson Island, MD • 21056

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 9.3 hours in June and 4.6 hours in December, which is comparable to the U.S. average for solar exposure.

9.3 hrs

4.6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$3.44M – $4.16M

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Nearby similar homes

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5 beds4 baths5,862 sq ft

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Home values near 640 Roundhill Rd

Data from public records.

Address	Redfin Estimate
658 Round Hill Road, Gibson Island, MD - Beds \| 3.5 Baths \| 2898 Sq. Ft.	$3,417,690
636 Round Hill Road, Gibson Island, MD - Beds \| 3.5 Baths \| 3720 Sq. Ft.	$3,489,576
662 Round Hill Road, Gibson Island, MD - Beds \| 4.5 Baths \| 4997 Sq. Ft.	$2,936,996
1609 St Giles Road, Gibson Island, MD - Beds \| 3.5 Baths \| 3576 Sq. Ft.	$2,949,761
1613 St Giles Road, Gibson Island, MD - Beds \| 2 Baths \| 2257 Sq. Ft.	$1,800,984
708 Skywater Road, Gibson Island, MD 5 Beds \| 3.5 Baths \| 3068 Sq. Ft.	$3,483,972
608 Cooleys Pond Road, Gibson Island, MD - Beds \| 3.5 Baths \| 3107 Sq. Ft.	$2,826,789

Address	Redfin Estimate
632 Round Hill Road, Gibson Island, MD - Beds \| 4.5 Baths \| 5181 Sq. Ft.	$5,349,664
648 Round Hill Road, Gibson Island, MD 6 Beds \| 8 Baths \| 12126 Sq. Ft.	$7,953,092
628 Round Hill Road, Gibson Island, MD - Beds \| 3 Baths \| 2931 Sq. Ft.	$3,673,945
703 Skywater Road, Gibson Island, MD 3 Beds \| 3 Baths \| 2826 Sq. Ft.	$2,477,354
1607 St Giles Road, Gibson Island, MD - Beds \| 3 Baths \| 2899 Sq. Ft.	$2,724,388
640 Magothy Road, Gibson Island, MD 4 Beds \| 2.5 Baths \| 3630 Sq. Ft.	$3,814,144
631 Magothy Road, Gibson Island, MD - Beds \| 5 Baths \| 6348 Sq. Ft.	$3,204,648

Address	Redfin Estimate
646 Round Hill Road, Gibson Island, MD - Beds \| 2.5 Baths \| 3133 Sq. Ft.	$2,652,271
654 Round Hill Road, Gibson Island, MD - Beds \| 6.5 Baths \| 7155 Sq. Ft.	$7,871,455
714 Skywater Road, Gibson Island, MD 4 Beds \| 4.5 Baths \| 4623 Sq. Ft.	$4,213,482
618 Cooleys Pond Road, Gibson Island, MD - Beds \| 5 Baths \| 2811 Sq. Ft.	$3,939,700
622 Cooleys Pond Road, Gibson Island, MD - Beds \| 5 Baths \| 6582 Sq. Ft.	$4,089,815
630 Magothy Road, Gibson Island, MD - Beds \| 4.5 Baths \| 7447 Sq. Ft.	$7,838,496
614 Cooleys Pond Road, Gibson Island, MD - Beds \| 4 Baths \| 4428 Sq. Ft.	$4,506,668

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GreatSchools Ratings provided by GreatSchools.org.

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640 Roundhill Rd, Gibson Island, MD 21056

About this home

Redfin Estimate

Earn from this home

Market trends in 21056, MD

Sale history for 640 Roundhill Rd

Tax history for 640 Roundhill Rd

Public record

Property details

Public facts

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

Home values near 640 Roundhill Rd

More real estate resources

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