428 E Diamond Ave, Gaithersburg, MD 20877 Property Records

Montgomery County property record for 428 E Diamond Ave, Gaithersburg, MD 20877

Property Summary

Property Type	Retail Stores (Personal Services, Photography, Travel)
Details	1,858 sqft · built 1990
Lot Size	0.353 acres (15,357 sqft)
Owner	Company Name on Record
Last Sale	$335,000 (Mar 2017)
Tax Bill	$6,995 (2025)
Deeds & Mortgages	Mar 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`09-00836404`

Property Details

APN / Parcel Number

Primary APN	`09-00836404`
Alternative APN	`00836404`

Interior

Stories	2 Stories
Building Area	1,858 sqft Gross Area
1st Floor Area	1,634 sqft
Basement Area	104 sqft

Exterior

Year Built	Built 1990
Effective Year Built	Effective 1990
Construction Type	Brick
Fire Resistance	Wood or Wood & Steel Frame
Lot Area	15,357 sqft (0.353 acres)
View / Lot	Commercial/Industrial
Porch	Enclosed Porch
Porch Area	224 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	HVAC
Sewer	Municipal

Location & Zoning

Account Number	00836404
Street Address	428 E DIAMOND AVE
City	GAITHERSBURG
State	MD
Zip	20877-3018
Property Category	Commercial
Property Type	Commercial > Retail > Retail Stores (Personal Services, Photography, Travel)
Local Zoning Code	CBD
Legal Description	DEER PARK DIAMOND AV E 4071/859 8940/508
Legal Subdivision	DEER PARK
Legal Block	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	Company Name on Record
Mailing Address	16109 AVERY RD, DERWOOD, MD 20855-1700
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 6, 2017 · Amount on Record
Deed Sale	Mar 6, 2017 · Amount on Record
Prior Sale	Apr 16, 1998 · Amount on Record
Deed Book / Page	53925 / 118
Record Updated	Sep 20, 2026

March 2017: Deed, Transfer

Document Type	Deed
Jurisdiction	MONTGOMERY MD
Recording Date	Mar 6, 2017
Property Address	428 E DIAMOND AVE, GAITHERSBURG, MD 20877-3018
Document Number	0539250118
Book / Page	53925 / 118
Map Reference	LB8940 FO508
Instrument Date	Feb 15, 2017
Transaction Type	Transfer
Record Updated	May 3, 2022

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$5,025.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	17926 TERI DR, DERWOOD, MD 20855-1345

Mortgage

Document Number	0053925124
Date	Mar 6, 2017
Instrument	53925/124

Lender

Name	CONGRESSIONAL BANK
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

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		$495,300 (+14.05%) Land $171,200 Building $324,100	$495,300 (-) Land $171,200 Building $324,100
2025	$6,995.00 (+40.38%)	$434,300 (+39.07%)	$495,300 (+58.6%) Land $171,200 Building $324,100
2023		$312,300 Land $155,700 Building $156,600	$312,300 Land $155,700 Building $156,600
2022	$4,983.00

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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