855 Diamond Dr, Gaithersburg, MD 20878 Property Records

Montgomery County property record for 855 Diamond Dr, Gaithersburg, MD 20878

Property Summary

Property Type	Single Family Home
Details	3 ba · 2,220 sqft · built 1971
Lot Size	0.22 acres (9,600 sqft)
Owner	2 Individual Names on Record
Last Sale	$550,000 (Aug 2021)
Tax Bill	$6,168 (2025)
Deeds & Mortgages	Aug 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`09-00827557`

Property Details

APN / Parcel Number

Primary APN	`09-00827557`
Alternative APN	`00827557`

Interior

Full Baths	3 Baths
Stories	1 Story
Building Area	2,220 sqft Living Area
1st Floor Area	1,320 sqft
Basement Area	900 sqft
Finished Basement	900 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1971
Effective Year Built	Effective 1971
Architectural Style	Townhouse
Construction Type	Frame
Roof Material	Composition Shingle
Lot Area	9,600 sqft (0.22 acres)
Garage Type	Carport
Garage Area	312 sqft
Carport	Carport
Carport Area	312 sqft
Parking Spaces	1 Parking Space
Deck Area	200 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	HVAC
Sewer	Municipal

Location & Zoning

Account Number	00827557
Street Address	855 DIAMOND DR
City	GAITHERSBURG
State	MD
Zip	20878-1804
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R90
Legal Description	DIAMOND COURTS
Legal Subdivision	DIAMOND COURTS
Legal Block	A
Legal Lot Number	31
Jurisdiction	MONTGOMERY MD
Township / Civil Division	9
Census Block Group	1
Census Block	1000
Census Tract	700823

Owner

Source: Montgomery County records, as of August 17, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	855 DIAMOND DR, GAITHERSBURG, MD 20878-1804
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Tenants by the Entirety

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 4, 2021 · Amount on Record
Deed Sale	Aug 4, 2021 · Amount on Record
Prior Sale	Jul 9, 1998 · Amount on Record
Deed Book / Page	63655 / 1
Record Updated	Sep 20, 2026

August 2021: Deed, Transfer

Document Type	Deed
Jurisdiction	MONTGOMERY MD
Recording Date	Aug 4, 2021
Property Address	855 DIAMOND DR, GAITHERSBURG, MD 20878-1804
Document Number	0636550001
Book / Page	63655 / 1
Map Reference	MB 84 PL 8747
Instrument Date	Jul 8, 2021
Transaction Type	Transfer
Record Updated	Aug 17, 2021
Title Company	SAGE TITLE GROUP LLC

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$6,875.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants by the Entirety
Address	855 DIAMOND DR, GAITHERSBURG, MD 20878-1804

Mortgage

Document Number	636558
Date	Aug 4, 2021
Instrument	63655/8

Lender

Name	ATLANTIC COAST MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Aug 1, 2051

Tax Assessment & Valuation

Source: Montgomery County assessment roll, as of August 17, 2026

Property Jurisdictions

Type	Name
State	Maryland
County	Montgomery County
Municipality	Gaithersburg City
Unified School District	Montgomery County Public Schools (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$530,300 (+6.65%) Land $241,000 Building $289,300	$530,300 (-) Land $241,000 Building $289,300
2025	$6,168.00 (+25.29%)	$497,233 (+15.34%)	$530,300 (+23.01%) Land $241,000 Building $289,300
2023		$431,100 Land $241,000 Building $190,100	$431,100 Land $241,000 Building $190,100
2022	$4,923.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective April 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	4 in force
Nearby Flood Claims	1 (1979)
Most Recent Claim	Oct 1979 · tidal / storm surge

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 97% of the US · lower than 94% of Maryland
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	WASHINGTON SUBURBAN SANITARY COMMISSION serves 1,900,000 people · EPA ID MD0150005
Water Source	Surface water
Last State Inspection	May 2025
Lead	Under 1 ppb (2018–2020) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 434 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber	2,300 / 2,300
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
T-Mobile Fixed Wireless	100 / 20