436 E Diamond Ave, Gaithersburg, MD 20877 Property Records

Montgomery County property record for 436 E Diamond Ave, Gaithersburg, MD 20877

Property Summary

Property Type	Mixed Use Commercial Office / Residential
Details	1,575 sqft · built 1950
Lot Size	0.356 acres (15,525 sqft)
Owner	Company Name on File
Last Sale	$140,000 (Jun 2011)
Flood Zone	Zone X (minimal risk)
APN	`09-00818974`

Property Details

APN / Parcel Number

Primary APN	`09-00818974`
Alternative APN	`00818974`

Interior

Stories	1 Story
Building Area	1,575 sqft

Exterior

Year Built	Built 1950
Lot Area	15,525 sqft (0.356 acres)

Location & Zoning

Account Number	00818974
Street Address	436 E DIAMOND AVE
City	GAITHERSBURG
State	MD
Zip	20877-3018
Property Category	Commercial
Property Type	Commercial > Office > Mixed Use Commercial Office / Residential
Local Zoning Code	CBD
Legal Description	DIAMOND AVE
Legal Subdivision	GAITHERSBURG TOWN
Jurisdiction	MONTGOMERY MD
Township / Civil Division	9
Census Block Group	1
Census Block	1003
Census Tract	700719

Owner

Source: Montgomery County records · APN 09-00818974

Assessment roll updated July 1, 2023 · Last verified October 2023

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

Owner of Record	Company Name on File
Mailing Address	2117 EDGEWARE ST, SILVER SPRING, MD 20905-4216
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jun 29, 2011 · Amount on Record
Deed Sale	Jun 29, 2011 · Amount on Record
Prior Sale	Sep 03, 2004 · Amount on Record
Deed Document Number	213120
Deed Book / Page	28222 / 0624
Record Updated	Jun 07, 2026

Tax Assessment & Valuation

Source: Montgomery County records · Assessment roll updated July 1, 2023 · Last verified October 2023

Property Jurisdictions

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

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of April 12, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

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

Wildfire

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 are read at the parcel center point; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: T-Mobile USA.

Based on FCC filings for 212 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	WASHINGTON SUBURBAN SANITARY COMMISSION serves 1,900,000 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.