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Property profile & analytics
OFF-MARKET
Estimated value
$1,520,000
Office buildings
302 Diamond Ave, Gaithersburg, MD 20877-5031
Individually Owned
3-yr Hold
Free & Clear
Property ID
US40-1404159
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1892
Construction
BRICK
Total area
6,848 SF
Lot
0.09 ac (4,129 SF)
Zoning code
CBD
APN
09-00818063
UPID
US40-1404159
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Implied cap rate, NOI & suggested price
Cap vs submarket · NOI estimate · 3 price anchors
Current use
Occupant on record · Public records
-
First Church-Christ Scientists Church Mosque
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$1.38M
Comparable Approach
Comparable
$1.57M
Blend (final)
Blend
$1.52M
Owner & transaction history
James R Clifford SR. · 3 yrs held
James R Clifford SR.
since 2023
7 recorded transactions
Zoning & alternative use
CBD · Gaithersburg, MD
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Warehouse, storage
$2.1M
+27.0%
Commercial (general)
$2.1M
+22.7%
Cap rate
Implied · in-place · derived from last sale + estimated NOI
Implied Cap rate
#1
Implied · in-place · NOI ÷ last sale
In-place · derived from last sale + estimated NOI
Cap rate, NOI & submarket benchmark
Implied cap rate vs Gaithersburg submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Gaithersburg submarket · NOI estimate · typical band, median & reading
Refine your cap rate
8-question underwriting flow
1.
Property current status — Going-In vs Stabilized
2.
Price for denominator — asking / offer / market
3.
Leasing status & lease structure (NNN / Gross)
4.
Tenant risk profile & vacancy assumption
5.
Upload T12 / rent roll / OM (optional)
Refine in 60 seconds, get exact suggested price
T12 upload · Submarket benchmarks · Sensitivity grid
Suggested price · 3 cap rate anchors
Income approach @ 5% / 7% / 9% — aggressive / typical / conservative
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · Implied $/SF per anchor · Sensitivity grid
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · implied $/SF · sensitivity
Value
AI, CAP & Alternative Use estimations · Realmo proprietary blendValue Estimations
Based on Realmo’s proprietary methodology
AI Approach
Method
Estimation
Statistic approach
by Request
ML approach
by Request
CAP Approach
CAP Return
Estimation
6%
$1,490,000
6.5%
$1,375,000
7%
$1,275,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$1,685,000
Current use
WAREHOUSE, STORAGE
$2,145,000
Change: +27% · Conversion: Difficult
COMMERCIAL (GENERAL)
$2,070,000
Change: +23% · Conversion: Easy
Blend value · Realmo final
$1.52M
Range $1.37M – $1.67M · ±10%
Realmo estimate · informational only.
These numbers are calculated by our models from public records and may not reflect actual market value.
Not an appraisal.
Verify with a licensed appraiser before transacting. Realmo accepts no liability for divergence from real-world outcomes.
View the full estimation — every method, every assumption
Confidence drivers & risk notes · Custom comparable set · Free for first 3 / day
Full estimation methodology
Every method · every assumption · confidence drivers
Price per SF
Sale + rent benchmarks
Subject property
$222 / SF
Submarket sale & rent benchmarks
Median sale $/SF · Asking & closed rent · Submarket vacancy
Submarket sale & rent benchmarks
Median sale $/SF · asking & closed rent · submarket vacancy
Property tax & assessments
Tax year 2022Property tax & assessments
Tax year 2022
Tax billed
$16,660
Tax year 2022
Assessed value
$1,323,000
Assessed 2023
Previous assessed
$1,265,333
+4.6% YoY
Effective rate
1.26%
On assessed value
Assessed land
$103,200
Assessed improvement
$1,219,800
Land market value
$103,200
Improvement market value
$1,219,800
Total market value
$1,323,000
Applied tax rate
13.0000
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
Similar Nearby for Sale
Similar Nearby for Lease
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
Recent comparable sales
Sale price & $/SF · sale date & distance · adjustments
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Office buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1892
Construction
BRICK
Heating
YES
Cooling
YES
Stories
2
Units
1
Total area
6,848 SF
Lot
0.09 ac (4,129 SF)
Zoning code
CBD
APN
09-00818063
UPID
US40-1404159
Jurisdiction
MONTGOMERY
Metro division
BETHESDA-GAITHERSBURG-FREDERICK, MD METROPOLITAN DIVISION
Zoning & alternative use
CBD · Gaithersburg, MD
Zoning CBD · permitted uses
CBD · Gaithersburg, MD
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Gaithersburg. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$1.7M
WAREHOUSE, STORAGE
Est. value
$2.1M
COMMERCIAL (GENERAL)
Est. value
$2.1M
OFFICE BUILDING Current
WAREHOUSE, STORAGE
COMMERCIAL (GENERAL)
Alternative use deep dive — conversion cost, permits, timeline
Conversion cost estimate · Permit path & risks · Stabilized NOI per option
Alternative use deep dive
Conversion cost · permit path · stabilized NOI per option
Building & site characteristics
From public records
Year built
1892
Construction
BRICK
Heating
YES
Cooling
Yes
Stories
2
Units
1
Lot
0.09 ac
Current owner
From public records · entity-resolved
James R Clifford SR.
Individual
Free & Clear · 3 yrs held
Mailing address
316 E DIAMOND AVE, GAITHERSBURG, MD 20877-3016
Ownership since
2023
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
8 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jun 5, 2025
—
James Reynolds Clifford SR.
—
Deed
related
$499,500 · Wesbanco Bank INC
Mar 28, 2023
—
James R Clifford SR.
James R Clifford SR.
Intrafamily Transfer
related
—
Aug 24, 2020
$300,000
James R Debelius SR
John W Debelius III
Grant Deed
—
Oct 9, 2018
—
James R Clifford SR.
Clifford,james R SR & Carol L
Quit Claim Deed
related
—
Sep 2, 2008
—
John W Debelius III
Debelius,john W III & Sarah C
Quit Claim Deed
—
Mar 29, 2002
—
John W Debelius
Barrister Associates LP
Grant Deed
related
—
—
—
James R Clifford
—
Deed Of Trust
related
$901,000 · Damascus Community Bank
—
—
John W Debelius III
—
Deed Of Trust
related
$230,920 · Mercantile Potomac Bank
Coming soon
Costs & Benchmarks
Operating expenses, capex projections, utility benchmarks, and submarket comparables — all in one view.
Coming soon
Risks
Flood, climate, environmental, title, and tenant-concentration risk — surfaced with mitigations and source citations.
Try Rey
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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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