416 E Diamond Ave, Gaithersburg, MD 20877 Property Records

Montgomery County property record for 416 E Diamond Ave, Gaithersburg, MD 20877

Property Summary

Property Type	Commercial Office
Details	1,710 sqft · built 1899
Lot Size	0.436 acres (18,974 sqft)
Owner	Individual Name on Record
Last Sale	$173,000 (Apr 1999)
Tax Bill	$6,043 (2025)
Deeds & Mortgages	Oct 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`09-03336082`

Property Details

APN / Parcel Number

Primary APN	`09-03336082`
Alternative APNs	`0900819763` `03336082`

Interior

Stories	2 Stories
Building Area	1,710 sqft Gross Area
1st Floor Area	1,710 sqft
Basement Area	368 sqft

Exterior

Year Built	Built 1899
Effective Year Built	Effective 1899
Construction Type	Brick
Fire Resistance	Wood or Wood & Steel Frame
Lot Area	18,974 sqft (0.436 acres)
View / Lot	Commercial/Industrial
Porch	Open Porch
Porch Area	144 sqft

Utilities, Heating & Cooling

Cooling System	A/C Chilled Water
Heating System	Hot Water
Sewer	Municipal

Location & Zoning

Account Number	03336082
Street Address	416 E DIAMOND AVE
City	GAITHERSBURG
State	MD
Zip	20877-3018
Property Category	Commercial
Property Type	Commercial > Office > Commercial Office
Local Zoning Code	CBD
Legal Description	DOWLESS ADDITION TO GAITHERSBURG
Legal Subdivision	GAITHERSBURG TOWN
Legal Block	1
Legal Lot Number	1
Jurisdiction	MONTGOMERY MD
Township / Civil Division	9
Census Block Group	1
Census Block	1003
Census Tract	700725

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	Individual Name on Record
Mailing Address	416 E DIAMOND AVE, GAITHERSBURG, MD 20877-3018
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 7, 1999 · Amount on Record
Deed Sale	Apr 7, 1999 · Amount on Record
Prior Sale	Apr 22, 1998
Deed Document Number	1999142935
Deed Book / Page	16964 / 165
Last Transfer Date	Jul 19, 2017
Transfer Doc	0550870236
Record Updated	Sep 20, 2026

October 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MONTGOMERY MD
Recording Date	Oct 17, 2017
Property Address	416 E DIAMOND AVE, GAITHERSBURG, MD 20877-3018
Document Number	0550870236
Book / Page	055087 / 000236
Instrument Date	Jul 19, 2017
Transaction Type	Transfer
Record Updated	Oct 27, 2017
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Sole Owner
Address	416 E DIAMOND AVE GAITHERSBURG MD 208773018, GAITHERSBURG, MD 20877-3018

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		$442,800 (+11.21%) Land $263,500 Building $179,300	$442,800 (-) Land $263,500 Building $179,300
2025	$6,043.00 (+12.49%)	$398,167 (+28.9%)	$442,800 (+43.35%) Land $263,500 Building $179,300
2024	$5,372.00 (+15.3%)
2023		$308,900 Land $268,400 Building $40,500	$308,900 Land $268,400 Building $40,500
2022	$4,659.00

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; 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 98% of the US · lower than 96% 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 212 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300
Xfinity Cable	2,000 / 2,000
Astound Broadband Cable	1,500 / 50

May also be available: T-Mobile.

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