3999 Flagg Ct, Chantilly, VA 20151
Property image
Property image
OFF MARKET

$509,500

Trulia Estimate
  • 3 Beds
  • 3 Baths
  • 1,578 sqft

3999 Flagg Ct, Chantilly, VA 20151

Est. Refi. Payment $3,109/mo*
Refinance Your Home
Currently Off Market - Sold Apr 7, 2015 for $300,000

Home Value

Trulia Estimate
$510K
Since last month
Increased$1K (+0.2%)
Since last year
Increased$5K (+0.9%)
Since last sale
Increased$211K (+70.3%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +71% in the last 10 years
MonthEstimated value
2026
August 2026$511K
August 2026$511K
July 2026$510K
June 2026$519K
May 2026$517K
April 2026$518K
March 2026$520K
February 2026$514K
January 2026$508K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
4151 Hamlin Ct, Chantilly, VA
0.38
Townhouse
$550,000
08/14/26
3
2.5
1,584
13711 Penwith Ct, Chantilly, VA
0.23
Townhouse
$500,000
12/29/25
3
3
1,860
4159 Novar Dr, Chantilly, VA
0.17
Townhouse
$585,000
06/30/26
4
3.5
2,112
3029 Virginia Dare Ct, Chantilly, VA
0.07
Townhouse
$425,000
04/17/26
3
2.5
1,782
13321 Hound Run Dr, Fairfax, VA
0.44
Townhouse
$621,600
07/24/26
3
3.5
1,520
3986 Mason Dixon Dr, Chantilly, VA
0.07
Townhouse
$575,000
11/17/25
5
3.5
2,600
3912 Kernstown Ct, Fairfax, VA
0.33
Townhouse
$729,000
04/24/26
3
3.5
2,552
3809 Foxfield Ln, Fairfax, VA
0.52
Townhouse
$605,000
10/15/25
3
3.5
1,684
4019 Kimberley Glen Ct, Chantilly, VA
0.51
Townhouse
$534,900
12/12/25
3
3.5
1,256
13336 Tannery Ct, Fairfax, VA
0.46
Townhouse
$630,000
05/15/26
3
3
1,360

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
4009 Flagg Ct, Chantilly, VA 20151
0.02
$530,500
4
1.5
1,210
Off Market
4023 Novar Dr, Chantilly, VA 20151
0.07
$652,200
4
2.5
1,560
Off Market
4025 Novar Dr, Chantilly, VA 20151
0.08
$686,200
4
3
1,560
Off Market
4012 Novar Dr, Chantilly, VA 20151
0.05
$656,500
3
2.5
1,540
Off Market
13620 Tabscott Dr, Chantilly, VA 20151
0.07
$577,100
3
1.5
900
Off Market
4016 Mapleton Dr, Chantilly, VA 20151
0.08
$785,000
4
2
1,900
For Sale
4011 Novar Dr, Chantilly, VA 20151
0.07
$680,000
4
3
1,540
Off Market
4010 Novar Dr, Chantilly, VA 20151
0.06
$645,000
3
2
1,230
Recently Sold
4006 Novar Dr, Chantilly, VA 20151
0.07
$675,000
4
2.5
2,100
Recently Sold
4010 Mapleton Dr, Chantilly, VA 20151
0.09
$683,700
4
2
1,986
Off Market
3029 Virginia Dare Ct, Chantilly, VA 20151
0.07
$425,000
3
2.5
1,782
Recently Sold
3036 Virginia Dare Ct, Chantilly, VA 20151
0.09
$577,900
4
2.5
1,485
Off Market

Local Information

  • Map ViewExplore the area around 3999 Flagg Ct.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Townhouse
Built in 1976
1,578 sqft
$323/sqft

About this House

MOVE RIGHT IN! Completely updated 3 fin.lvl TH w/breathtaking fenced yrd*Fresh paint*REMODELD Kitc has granite cntrs,updated applnces,replaced applnces,recessed&track lighting,updated fixtures,cabs refaced*Newly installed full bath LL*Updated Uppr Lvl&1/2 baths*Newly installed carpet*Sep.den LL could be 4th BR*Windows replaced*CAC replaced in '06*H20 Heater 3yrs*Comm.Pool*REMOVE SHOES*
3999 Flagg Ct, Chantilly, VA 20151 is a 3 bedroom, 3 bathroom, 1,578 sqft townhouse built in 1976. It last sold for $300,000 on Apr 7, 2015. More recently, it was listed as a rental in July 2019 with an asking price of $2,050 per month. That rental listing was removed on March 24, 2021. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $509,500, with a rent estimate of $2,738/month.

Home Details for 3999 Flagg Ct

Interior Features

Interior Details
BasementNumber of Rooms: 8Types of Rooms: Breakfast Nook, Dining Room, Recreation Room
Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 3Floors: Carpet, Laminate
Appliances & Utilities
Cable ReadyDishwasherDisposalDryerMicrowaveRefrigeratorWasher

Exterior Features

Exterior Home Features
Roof: OtherDeckExterior: Vinyl
Parking & Garage
Parking Space: 1

Property Information

Year Built
Year Built: 1976
Property Type / Style
Property Type: TownhouseArchitecture: Colonial

Community

Units in Building: 1

Lot Information

Lot Area: 1759 sqft

Price and Tax history

DateEventPrice
Mar 24, 2021
Source: N/A
ListingRemoved
Aug 8, 2019
Source: N/A
ListingRemoved
$2,050
Jul 23, 2019
Source: N/A
Listed For Rent
$2,050
Apr 7, 2015
Source: N/A
Sold
$300,000
Feb 10, 2015
Source: Agent Provided
Pending
$275,000

Market trends in Chantilly

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$813K
$43.42KMoM
Sale-to-List Price
100.4%
0.1%MoM
Price per sq ft
$311
$5MoM
Available listings
143
18MoM

Around this home

What Locals Say about Chantilly

At least 266 Trulia users voted on each feature.

  • 90 % Say there are sidewalks

  • 89 % Say it's dog friendly

  • 87 % Say car is needed

  • 81 % Say parking is easy

  • 79 % Say kids play outside

  • 77 % Say there's holiday spirit

  • 75 % Say people would walk alone at night

  • 74 % Say yards are well-kept

  • 70 % Say it's quiet

  • 64 % Say streets are well-lit

  • 56 % Say it's walkable to grocery stores

  • 52 % Say there's wildlife

  • 52 % Say they plan to stay for at least 5 years

  • 50 % Say neighbors are friendly

  • 48 % Say it's walkable to restaurants

  • 41 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "This is a very family friendly neighborhood "
    0
    Flag
  • Tt9xnndvtk
    "Has a good family feel, everyone is always walking and enjoying the neighborhood. For the most part, not a lot of trash in the streets."
    0
    Flag
  • Rebeccamunsie3
    "It’s a great family oriented neighborhood. Very safe and clean and a lot of walking trails that help people get outside. "
    0
    Flag
  • Saeedkohan1978
    "is good neighborhood and transport not good almost between good and bad. here is nature nice and came . "
    0
    Flag
  • Hbk_gaurav007
    "Love living here in South Riding, very safe and friendly people! Love driving around with all the nature and scenic views! "
    0
    Flag
  • John Sears
    "Excellent schools and very convenient to a great deal of shopping and activities. Good people who care about the community."
    0
    Flag
  • John Sears
    "There are really great schools in Chantilly from elementary through high school. You can’t go wrong."
    0
    Flag
  • Loundouncoschoolsstink
    "People are not friendly in area. Schools are radical. Sports rosters are unfairly picked. High taxes. Very expensive. Data centers and Vape stores everywhere. "
    5
    Flag
  • Cristian B.
    "yes every where every time very nice and safe neighborhood living here is a plus I can tell for the all the amenities and newly built public places around."
    7
    Flag
  • Shantina D.
    "Everyone is friendly and courteous without and insecurities. Feel safe for my child to walk by herself"
    1
    Flag
  • Itafro14
    "Halloween is really nice here. And there’s a pool that you can join. Also lots of neighborhood fireworks on July 4th."
    3
    Flag
  • Cdodmead
    "Great neighborhood for families. Only draw back is some people drive a bit too fast through the neighborhood. "
    2
    Flag
  • Cruz R.
    "People are really nice and are easy to talk to. It’s always fun to walk around the neighborhood on sunny days. "
    3
    Flag
  • Bssloan
    "I am retired. However, getting to and from work at the Pentagon using public transportation was easy."
    3
    Flag
  • Vicky P.
    "timing is everything in the commute. Earlier is better than later. public transportation is poor and not convenient. roads are always crowded. "
    1
    Flag
  • Becconway
    "I’ve lived here a year and a half with two small children. I know my neighbors and I like them. This is an established set of nice middle class homes with no HOA. Good mix of all ages and cultural varieties. Safe place. Friendly people. Convenient to necessities. "
    0
    Flag
  • Gineastar2
    "Crimes and criminals in the area and surrounding areas and the safety parks and trails as well as activities in the area."
    0
    Flag
  • Yolanda J.
    "My commute is long and tiresome but it’s well worth it. I’m out here since the schools are great for my son."
    2
    Flag
  • Diana I.
    "Swim team, family swimming, adult swimming, barbecues, pot lucks, every neighbor helped push out a stuck snow plow then shoveled the whole street together, Halloween and Easter parties for all the children, feel very safe."
    4
    Flag
  • Claudia S.
    "Safe and active community with diverse population and mixture of young and old who show concern for each other."
    0
    Flag
  • Shark66rg
    "There’s too many odd people here and too many trees and the leaves and all over the streets and no one ever cleans them up, "
    3
    Flag
  • Nandita G.
    "There is a park and ride lot on Stringfellow that has really improved the commute. Now you can take a bus directly to Vienna during rush hour that only takes about 15 minutes. "
    0
    Flag
  • Elizabeth F.
    "South Riding very walkable with wide sidewalks and a grid pattern in the center of the community. Beautifully landscaped throughout."
    3
    Flag
  • Slspengler
    "Safe neighborhood. Great schools. Nice neighbors. Solid community. Outstanding Sheriff’s Department (Loudoun). "
    0
    Flag
  • Jemmy
    "people here are very friendly and make you feel very welcome. There are lots of kids and a playground in front of the apartments. "
    2
    Flag
  • Stephen T.
    "Getting to DC is difficult. There is a bus service but it only runs during certain hours. Hopefully the silver line extension will help."
    0
    Flag
  • M.O.
    "There’s lots of dog owners and for the most part, pick up after them and keep leashed. There’s lots of sidewalks and paths for pet walking. I hope that a dog park will come to Avonlea some day. "
    0
    Flag
  • Sara.gintert
    "Lots of pools and community activities to attend. Neighbors are friendly. Houses are well maintained. Golf course nearby. "
    0
    Flag
  • Misty O.
    "I love summers here with our quiet pool! It’s never too crowded to grab a chair or a table to picnic. "
    0
    Flag
  • Sara.gintert
    "Great paths for walking and lots of pools to choose from. Neighbors are friendly. Close to shopping and restaurants "
    2
    Flag
  • Myungkeun C.
    "I've lived in Chantilly since it was 2011. I think Chantilly itself is great enough but fairfax county is even greater. "
    0
    Flag
  • Brittany A.
    "Very diverse neighborhood, most neighbors don’t mind dogs and are friendly but there are a lot of kids so it depends on your fur baby!"
    1
    Flag
  • slspengler
    "Some days good - some days not so good. It all depends on weather and accidents. Monday and Fridays are easiest as are weeks with holidays. "
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 3999 Flagg Ct

  • What is 3999 Flagg Ct estimated to be worth?
    Trulia's estimated value for 3999 Flagg Ct in Chantilly, VA is $509,500.
  • What is the price history for 3999 Flagg Ct?
    3999 Flagg Ct in Chantilly, VA last sold for $300,000 in April 2015.
  • Is Chantilly a buyer's or seller's market?
    Chantilly is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Chantilly?
    The median sale price in Chantilly is $813K. That is up $43.42K from the prior month.
  • Does 3999 Flagg Ct have air conditioning?
    Yes, 3999 Flagg Ct in Chantilly, VA has air conditioning.
  • Does 3999 Flagg Ct have laundry facilities?
    Yes, 3999 Flagg Ct in Chantilly, VA has in-unit laundry.

Explore by feature - Pet Friendly

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Explore by feature - Garage

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Explore by feature - Air Conditioning

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Explore by feature - Pool

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Explore by feature - Washer/dryer

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Explore by feature - Outdoor Space

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Apartments for Rent

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Off Market Homes Near 3999 Flagg Ct

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