9 William St, Greenwich, CT 06830
OFF MARKET

9 William St
Greenwich, CT 06830

Riverside
  • 6 Beds
  • 6 Baths
  • 3,975 sqft (on 0.29 acres)

$6,423,600

Trulia Estimate
as of May 27, 2026
Est. Refi. Payment $41,199/mo*
Refinance Your Home

$6,423,600

Trulia Estimate
as of May 27, 2026
Est. Refi. Payment $41,199/mo*
Refinance Your Home
6 Beds
6 Baths
3,975 sqft
(on 0.29 acres)

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

This single-family home is located at 9 William St, Greenwich, CT. 9 William St is in the Riverside neighborhood in Greenwich, CT and in ZIP code 06830. This property has 6 bedrooms, 6 bathrooms and approximately 3,975 sqft of floor space. This property has a lot size of 0.29 acres and was built in 2017.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
Garage
Outdoor
Deck
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 9 William St

Interior Features

Interior Details
BasementNumber of Rooms: 11
Heating & Cooling
Heating: Forced AirAir ConditioningHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2
Fireplace & Spa
Hot Tub or Spa

Exterior Features

Exterior Home Features
Roof: AsphaltDeckExterior: Wood
Parking & Garage
GarageParking: Garage Attached

Property Information

Year Built
Year Built: 2017
Property Type / Style
Property Type: Single Family HomeArchitecture: Colonial

Lot Information

Lot Area: 0.29 acres

Price History for 9 William St

DatePriceEventSource
06/15/2018$4,425,000Sold
Smart MLS #170059677
06/01/2016$1,735,000Sold
N/A
Skip to last item
  • Results are loading
Skip to first item

Property Tax and Assessment

Year2025
Tax$33,982
Assessment$2,749,600
Home facts updated by county records

Comparable Sales for 9 William St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
29 Lockwood Dr, Old Greenwich, CT
0.25
Single-Family Home
$4,650,000
09/15/25
5
5.5
4,286
27 Weston Hill Rd, Riverside, CT
0.15
Single-Family Home
$5,170,000
06/24/25
6
6
6,607
348 Sound Beach Ave, Old Greenwich, CT
0.45
Single-Family Home
$4,500,000
01/13/26
6
5.5
4,114
18 Shoal Point Ln, Riverside, CT
0.09
Single-Family Home
$6,525,000
07/01/25
5
5.5
4,202
294 Riverside Ave, Riverside, CT
0.17
Single-Family Home
$3,850,000
07/17/25
5
4.5
4,392
16 Summit Rd, Riverside, CT
0.21
Single-Family Home
$3,200,000
05/08/26
5
4.5
4,187
119 Hendrie Ave, Riverside, CT
0.34
Single-Family Home
$3,800,000
12/17/25
6
5.5
5,175
46 Park Ave, Old Greenwich, CT
0.43
Single-Family Home
$5,038,000
11/12/25
5
5
4,087
246 Riverside Ave, Riverside, CT
0.41
Single-Family Home
$3,950,000
08/01/25
5
5
4,362
5 Spring St, Riverside, CT
0.21
Single-Family Home
$4,950,000
07/28/25
6
6
6,469

Nearby homes

Get a sense of prices in the area by checking nearby homes.
Skip to last item
Skip to first item

Assigned Schools

These are the assigned schools for 9 William St.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Riverside
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Riverside

At least 47 Trulia users voted on each feature.

  • 92 % Say parking is easy

  • 91 % Say it's dog friendly

  • 90 % Say yards are well-kept

  • 89 % Say kids play outside

  • 89 % Say people would walk alone at night

  • 88 % Say they plan to stay for at least 5 years

  • 87 % Say car is needed

  • 86 % Say there's holiday spirit

  • 82 % Say it's quiet

  • 74 % Say neighbors are friendly

  • 74 % Say there's wildlife

  • 73 % Say there are sidewalks

  • 59 % Say it's walkable to restaurants

  • 56 % Say it's walkable to grocery stores

  • 53 % Say streets are well-lit

  • 52 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Sharon Elkayam
    "It is a friendly community where the kids ride bikes and play together. The schools are good. The kids play in the front yards. "
    0
    Flag
  • Trulia User
    "Very dog friendly. Lots of great places to walk with a dog. Many dog owners. The beach in Old Greenwich is a fun place to meet other dog owners and allow them to play."
    0
    Flag
  • Trulia User
    "I95 is the worst and the Merritt parkway are very difficult to commute on. Good luck if you need to commute during peak times. "
    1
    Flag
  • Sharonelkayam
    "Kid and pet friendly. Nice neighbors and well kept homes. The schools are great. Good area for walking and running. Near trains and shopping area in Old Greenwich. Beach is also a few minutes away."
    1
    Flag
  • Jesselynn G.
    "The elementary school fairs/carnivals, trick or treating, fireworks at the park nothing else in particular but overall a great neighborhood "
    0
    Flag
  • Rebecca
    "People r always out walking their dogs. Cars know they have the right of way and will either slow or go around completely "
    0
    Flag
  • Rebecca
    "Cozy neighborhood feel. Folks say hello when u walk past them. Lots of kids on bikes and dogs on leash"
    0
    Flag
  • Msuppodvm
    "Many special events around families and children. Many resources available for families and kids. Excellent afternoon programs, many sports programs. "
    0
    Flag
  • Mirielramos
    "I love my neighborhood is peaceful and quiet, nice place to live, and have all close by, bank, supermarket, drug stores etc"
    0
    Flag
  • Mcm.captiva@gmail.com
    "I see lots of dogs being walked. and responsible dog owners cleaning up after their dogs. Some owners having invisible fenced and didn't playing in yards. "
    0
    Flag
  • Mcm.captiva@gmail.com
    "neighborhood charity 10K runs. Church carnival. patriotic displays. fireworks in park. outdoors music."
    0
    Flag
  • Mcm.captiva@gmail.com
    "I take train to GCT and it is a short walk to METRO North. The commuter trains run very reliably and often."
    0
    Flag
  • Kimberly.kois
    "Very family friendly , sporty , safe , neighborhood with great access to public transportation, elementary schools, parks, playground , beach , Old Greenwich town"
    0
    Flag
  • Rebecca
    "Close to the water....can walk into town...kids walk or bike to school....unspoken neighborhood watch "
    8
    Flag
  • Sophiecoko
    "Living in a coastal neighborhood is really special. I love seeing the kids biking to the beach without jackets on ready to sail, kayak or paddle board."
    0
    Flag
  • dryfly7
    "Beautiful Dogwood Park Association, 3 minute walk to highly rated North Mianus Elementary School"
    0
    Flag

LGBTQ Local Legal Protections

Apartments for Rent

Skip to last item
Skip to first item

Explore by feature

Homes for sale near 9 William St

Skip to last item
Skip to first item

Off Market Homes Near 9 William St

Skip to last item
Skip to first item

Homes for rent near 9 William St

Skip to last item
Skip to first item
9 William St, Greenwich, CT 06830 is a 6 bedroom, 6 bathroom, 3,975 sqft single-family home built in 2017. 9 William St is located in Riverside, Greenwich. This property is not currently available for sale. 9 William St was last sold on Jun 15, 2018 for $4,425,000. The current Trulia Estimate for 9 William St is $6,423,600.