312 E Diamond Ave, Gaithersburg, MD 20877 Property Records

Montgomery County property record for 312 E Diamond Ave, Gaithersburg, MD 20877

Property Summary

Property Type	Retail Stores (Personal Services, Photography, Travel)
Details	14,784 sqft · built 1919
Lot Size	0.346 acres (15,068 sqft)
Owner	2 Individual Names on File
Last Sale	$1,000,000 (Jul 1995)
Tax Bill	$24,975 (2025)
Flood Zone	Zone X (minimal risk)
APN	`09-00819843`

Property Details

APN / Parcel Number

Primary APN	`09-00819843`
Alternative APN	`00819843`

Interior

Stories	1 Story
Building Area	14,784 sqft Gross Area
1st Floor Area	14,784 sqft
Fire Sprinklers	Fire Sprinklers

Exterior

Year Built	Built 1919
Effective Year Built	Effective 1919
Construction Type	Brick
Fire Resistance	Masonry Walls, Wood Interior
Lot Area	15,068 sqft (0.346 acres)
View / Lot	Commercial/Industrial

Utilities, Heating & Cooling

Cooling System	Central
Heating System	HVAC
Sewer	Municipal

Location & Zoning

Account Number	00819843
Street Address	312 E DIAMOND AVE
City	GAITHERSBURG
State	MD
Zip	20877-3011
Property Category	Commercial
Property Type	Commercial > Retail > Retail Stores (Personal Services, Photography, Travel)
Local Zoning Code	CBD
Legal Description	ON LAYTONSVILLE RD
Legal Subdivision	GAITHERSBURG TOWN
Legal Block	1
Jurisdiction	MONTGOMERY MD
Township / Civil Division	9
Census Block Group	1
Census Block	1002
Census Tract	700725

Owner

Source: Montgomery County assessment roll, APN 09-00819843, as of August 17, 2026 · Last verified August 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 File
Mailing Address	1906 TOWNE CENTRE BLVD, 270, ANNAPOLIS, MD 21401-3678
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jul 05, 1995 · Amount on Record
Deed Sale	Jul 05, 1995 · Amount on Record
Deed Book / Page	13485 / 241
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

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

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,806,500 (+4.08%) Land $376,700 Building $1,429,800	$1,806,500 (-) Land $376,700 Building $1,429,800
2025	$24,975.00 (+14.15%)	$1,735,667 (+8.89%)	$1,806,500 (+13.33%) Land $376,700 Building $1,429,800
2023		$1,594,000 Land $376,700 Building $1,217,300	$1,594,000 Land $376,700 Building $1,217,300
2022	$21,880.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Montgomery County (24031C), as of April 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · 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, 276 locations within half a mile, 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
T-Mobile USA Fixed Wireless	100 / 20

May also be available: AT&T.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system MD0150005, 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.