6421 Knollbrook Dr, Adelphi, MD 20783
OFF MARKET

$391,200

Trulia Estimate
  • Studio
  • 1 Bath
  • 1,338 sqft

6421 Knollbrook Dr, Adelphi, MD 20783

Est. Refi. Payment $2,434/mo*
Refinance Your Home
Currently Off Market - Sold Dec 19, 2001 for $2,036,803

Home Value

Trulia Estimate
$391K
Since last month
Decreased$18K (-4.4%)
Since last year
Decreased$10K (-2.4%)
Since last sale
Decreased$2M (-80.8%)
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 +45% in the last 10 years
MonthEstimated value
2026
August 2026$391K
August 2026$390K
July 2026$409K
June 2026$403K
May 2026$408K
April 2026$411K
March 2026$402K
February 2026$399K
January 2026$395K
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
0.06
Single-Family Home
$435,000
07/28/26
3
2
1,379
0.28
Single-Family Home
$432,000
06/09/26
1
1,364
0.05
Single-Family Home
$336,002
04/20/26
3
2
1,299
0.09
Single-Family Home
$380,000
12/05/25
4
2
1,169
0.11
Single-Family Home
$475,000
06/02/26
2
1,469
0.09
Single-Family Home
$315,000
01/12/26
3
1,389
0.10
Single-Family Home
$475,000
05/12/26
4
2
2,069
0.08
Single-Family Home
$315,000
12/23/25
5
2
1,389
0.17
Single-Family Home
$439,900
05/04/26
4
2.5
1,584
0.53
Single-Family Home
$725,000
09/11/25
2
1,287

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
0.02
$504,600
5
3
1,469
Off Market
0.06
$509,300
6
3
1,169
Off Market
0.05
$336,002
3
2
1,299
Recently Sold
0.06
$435,000
3
2
1,379
Recently Sold
0.09
$380,000
4
2
1,169
Recently Sold
0.09
$599,000
7
3
3,603
Recently Sold
0.08
$315,000
5
2
1,389
Recently Sold
0.13
$498,900
4
3
2,651
Off Market
0.10
$475,000
4
2
2,069
Recently Sold
0.12
$463,600
5
2
1,169
Off Market
0.17
$439,900
4
2.5
1,584
Recently Sold
0.17
$410,000
4
2.5
1,284
Recently Sold

Local Information

  • Map ViewExplore the area around 6421 Knollbrook Dr.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1941
Living Area
1,338 sqft
Price/Sqft
$292

About this House

This single-family home is located at 6421 Knollbrook Dr, Adelphi, MD. 6421 Knollbrook Dr is in Adelphi, MD and in ZIP code 20783. This property has 1 bathroom and approximately 1,338 sqft of floor space. This property has a lot size of 6632 sqft and was built in 1941.
6421 Knollbrook Dr, Adelphi, MD 20783 is a studio, 1 bathroom, 1,338 sqft single-family home built in 1941. It last sold for $2,036,803 on Dec 19, 2001. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $391,200, with a rent estimate of $2,636/month.

Home Details for 6421 Knollbrook Dr

Interior Features

Interior Details
Basement
Levels, Entrance, & Accessibility
Stories: 1.5
Heating & Cooling
Air Conditioning
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: Shake ShingleExterior: Other, BrickPatio

Property Information

Year Built
Year Built: 1941
Property Type / Style
Property Type: Single Family HomeArchitecture: Conventional

Community

Units in Building: 1

Lot Information

Lot Area: 6632 sqft

Price and Tax history

DateEventPrice
Dec 19, 2001
Source: N/A
Sold
$2,036,803
Aug 24, 2001
Source: N/A
Sold
$155,000
Dec 2, 1997
Source: N/A
Sold
$2,185,000

Market trends in Chillum

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
โ€”
Sale-to-List Price
โ€”
Price per sq ft
โ€”
Available listings
38
2
MoM

What Locals Say about Chillum

At least 177 Trulia users voted on each feature.
  • 81 % Say there are sidewalks

  • 72 % Say it's walkable to grocery stores

  • 67 % Say it's dog friendly

  • 67 % Say yards are well-kept

  • 64 % Say kids play outside

  • 62 % Say streets are well-lit

  • 60 % Say car is needed

  • 59 % Say it's walkable to restaurants

  • 56 % Say there's holiday spirit

  • 55 % Say parking is easy

  • 51 % Say there's wildlife

  • 51 % Say they plan to stay for at least 5 years

  • 51 % Say it's quiet

  • 44 % Say neighbors are friendly

  • 39 % Say people would walk alone at night

  • 33 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Adrienne Hall
    "I like how im close to route 50, 295, 202, 495, Silver Spring, DC, and VA. Traffic can get really bad to these places or taking longer to get to Central PG County such as hr but i like this area"
  • Edgardoa796
    "I been living here for more then 10 years so thatโ€™s the reason I feel like is unique for me and my family "
  • Mario J.
    "I need a place to work at and because my family lives there and I get much help with my kids and itโ€™s a nicer place "
  • Josephine091fof
    "They always pick up after their dogs and walk them all the time so in our neighborhood we donโ€™t have to worry about none of that and I will recommend this place to anyone I know because itโ€™s a well maintained areas and we love each otherโ€™s "
  • Ronald S.
    "Parks, shopping, restaurants, community events, tennis courts, community center, dog walk parks nearby."
  • PattyP
    "easy no car needed walk to metro or catch a bus ride or biking. The commute to downtown is 20mins on metro. Fast no traffic commute."
  • Ayanna G.
    "The neighborhood itself is great. Very friendly, safe to walk and lots of playgrounds. The schools are low performing."
  • Sage
    "Very convenient, driving or catching the metro. So many stores and most are walking distance. Good area to live in. "
  • Gokafor20
    "The commute to anywhere in downtown dc can take anything up to 20-30 minutes relying solely on the wmata transit system. Which is actually pretty good especially if you plan accordingly. "
  • Ricardo T.
    "Green areas park and recreation for kids and adults, shopper centers close school bus close, pets friendly "
  • policyscribe
    "Chillum is a quiet close knit community on the boarder of Washington DC, next to Takoma Park. It is a small community where people moved in and stayed; unless they outgrow their home. The current residents are typically college educated working class professionals with student loans and responsibilities making a life for themselves. It's a place where residents have dinner parties in the winters and barbecues and cocktail parties on their backyard decks in the summer. It's a place where we drive 15 minutes to 14 street NW to bar hop at resturants and lounges, or 15 minutes to Rappahannock Oyster Bar at Union Market on 5th street NE for martins and oysters. IF we get too smashed, we take the Metro (Red line) back home. It's a place where our neighbors pick up each other's mail when either of us goes out of town. Lastly, we will call our police liason if anything looks like it's wrong. My neighbors did not know I was going to get the carpet removed. I left the door unlocked and the flooring crew was there while I was at the office. I received a couple of text messages regarding the "men with van in the drive way". Since my car was not there , my neighbors called the police liaison. Although, it was a spectacle, and the flooring guys were inconvenienced, I appreciate all that my neighbors have done for me. The community is why I enjoy living here. "
  • Baako211
    "Well cared for neighborhood. Long term residents. Diverse community. All ages. Civic Association. Quiet. Low traffic volume. Convenient to shopping, groceries and public transportation. Large lots. Mature trees. Walkable."

LGBTQ Local Legal Protections

Frequently asked questions about 6421 Knollbrook Dr

  • What is 6421 Knollbrook Dr estimated to be worth?
    Trulia's estimated value for 6421 Knollbrook Dr in Adelphi, MD is $391,200.
  • What is the price history for 6421 Knollbrook Dr?
    6421 Knollbrook Dr in Adelphi, MD last sold for $2,036,803 in December 2001.
  • Is Adelphi a buyer's or seller's market?
    Adelphi is currently a seller's market, based on recent for-sale activity.
  • What do residents say about Adelphi?
    Residents describe Adelphi, MD as pedestrian-friendly, walkable to grocery stores, and dog-friendly. See recently sold homes in Adelphi, MD.
  • How big is the lot at 6421 Knollbrook Dr?
    The lot at 6421 Knollbrook Dr in Adelphi, MD is about 0.15 acres (6,632 sq ft).

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