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Property profile & analytics
OFF-MARKET
Estimated value
$735,000
Office Spaces
806 Diamond Ave 120, Gaithersburg, MD 20878-1415
Entity Owned
1-yr Hold
Absentee Owner
Free & Clear
Property ID
US40-2343967
Property summary
AI-generated overview
This exceptional executive office center, located at 806 & 818 W. Diamond Ave in Gaithersburg, Maryland, presents a unique investment opportunity. The Quince Tree Executive Center boasts a total of 77,763 square feet of commercial office space within two suites, situated in Montgomery County. Built in 1985, this property offers significant flexibility for businesses seeking immediate occupancy. The entire 77,763 square feet is currently vacant, providing a blank canvas for a single large tenant or the potential to divide the space. Minimum divisible space starts at 37,119 square feet, while the maximum contiguous space available is 40,644 square feet. This prime location in Gaithersburg offers convenient access to I-270, making it an ideal location for businesses seeking easy commutes and strong regional connectivity. The property's size and layout make it suitable for a variety of uses, from corporate headquarters to large-scale professional practices. This is a rare opportunity to acquire a substantial, fully vacant office building in a highly desirable location within Montgomery County, Maryland. The property's zip code is 20878. Serious inquiries are encouraged.
Property profile
Verified
Property type
Office Spaces
Use group
CONDOMINIUM OFFICES
Total area
1,097 SF
Lot
1 ac (43,560 SF)
Zoning code
C2
APN
09-03554348
UPID
US40-2343967
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
-
Nova Dental Gaithersburg Dental Office
-
MVPsmiles Dental Office
-
Family ENT, Allergy & Asthma Center Medical Clinic
-
Zorina Thomas PA-C Physician
-
Goicochea Juvenal R MD Physician
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$735k
Owner & transaction history
Hess Construction Company LLC · 1 yrs held
Hess Construction Company LLC
since 2025
Last sale
$900,000
1 recorded transaction
Zoning & alternative use
C2 · Gaithersburg, MD
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Retail stores
$605,000
+89.1%
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%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
RETAIL STORES
$605,000
Change: +89% · Conversion: Moderate
Blend value · Realmo final
$735k
Range $662k – $809k · ±10% · vs last sale $900k (May 2 2025)
Last sale anchor
$900k
May 2 2025
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
$670 / 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
$546
Tax year 2022
Assessed value
$25,700
Assessed 2023
Previous assessed
$25,567
+0.5% YoY
Effective rate
2.12%
On assessed value
Assessed land
$7,700
Assessed improvement
$18,000
Land market value
$7,700
Improvement market value
$18,000
Total market value
$25,700
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 Spaces
Use group
CONDOMINIUM OFFICES
Status
Off-Market
Heating
NONE
Units
1
Total area
1,097 SF
Lot
1 ac (43,560 SF)
Zoning code
C2
APN
09-03554348
UPID
US40-2343967
Jurisdiction
MONTGOMERY
Metro division
BETHESDA-GAITHERSBURG-FREDERICK, MD METROPOLITAN DIVISION
Zoning & alternative use
C2 · Gaithersburg, MD
Zoning C2 · permitted uses
C2 · 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
RETAIL STORES
Est. value
$605,000
RETAIL STORES
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
Heating
NONE
Units
1
Lot
1 ac
Current owner
From public records · entity-resolved
Hess Construction Company LLC
Entity
Free & Clear · 1 yrs held
Mailing address
10622 ALLOWAY DR, POTOMAC, MD 20854-1600
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2025
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
1 recorded event · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
May 2, 2025
$900,000
Hess Construction Company LLC
West Diamond Realty LLC
Deed
—
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.
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