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Property profile & analytics
OFF-MARKET
Estimated value
$1,565,000
Office buildings
3799 Mt Diablo Blvd Lafayette, CA 94549-3545
Entity Owned
Absentee Owner
Free & Clear
Property ID
US09-3059272
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1980
Total area
5,052 SF
Lot
0.24 ac (10,500 SF)
Zoning code
MR
APN
241-062-001-3
UPID
US09-3059272
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
-
Keith R. Gronbach, D.D.S., Inc. / East Bay Oral Surgery Dental Office
-
Team Rothenberg Real Estate Agents Real Estate Agency
-
paul j. tiao Real Estate Agency
-
Margaret Rose Hartwell Real Estate Agency
-
Harold Wilkie Physician
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$1.50M
Comparable Approach
Comparable
$1.46M
Blend (final)
Blend
$1.57M
Owner & transaction history
The Poppy Daisy Company LLC
The Poppy Daisy Company LLC
since 2026
5 recorded transactions
Zoning & alternative use
MR · Lafayette, CA
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Restaurant
$2.2M
+27.2%
Medical building
$1.8M
+5.7%
Commercial (general)
$1.8M
+1.3%
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 Lafayette submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Lafayette 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%
$1,625,000
6.5%
$1,500,000
7%
$1,390,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$1,735,000
Current use
RESTAURANT
$2,210,000
Change: +27% · Conversion: Moderate
MEDICAL BUILDING
$1,835,000
Change: +6% · Conversion: Easy
COMMERCIAL (GENERAL)
$1,760,000
Change: +1% · Conversion: Easy
Blend value · Realmo final
$1.57M
Range $1.41M – $1.72M · ±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
$310 / 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 2024Property tax & assessments
Tax year 2024
Tax billed
$33,779
Tax year 2024
Assessed value
$2,592,217
Assessed 2024
Previous assessed
$2,592,217
+0.0% YoY
Effective rate
1.30%
On assessed value
Assessed land
$824,795
Assessed improvement
$1,767,422
Applied tax rate
14.0000
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
1980
Heating
NONE
Stories
1
Units
1
Rooms
1
Total area
5,052 SF
Lot
0.24 ac (10,500 SF)
Zoning code
MR
APN
241-062-001-3
UPID
US09-3059272
Jurisdiction
CONTRA COSTA
Metro division
OAKLAND-FREMONT-HAYWARD, CA METROPOLITAN DIVISION
Zoning & alternative use
MR · Lafayette, CA
Zoning MR · permitted uses
MR · Lafayette, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Lafayette. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$1.7M
RESTAURANT
Est. value
$2.2M
MEDICAL BUILDING
Est. value
$1.8M
COMMERCIAL (GENERAL)
Est. value
$1.8M
OFFICE BUILDING Current
RESTAURANT
MEDICAL BUILDING
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
1980
Heating
NONE
Stories
1
Units
1
Rooms
1
Lot
0.24 ac
Current owner
From public records · entity-resolved
The Poppy Daisy Company LLC
Entity
Free & Clear · 0 yrs held
Mailing address
52 CHANCELLOR PL, BERKELEY, CA 94705-1610
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
2026
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
5 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jan 2, 2026
—
The Poppy Daisy Company LLC
Keith R Gronbach
Grant Deed
—
Jan 31, 2020
—
Keith R Gronbach
—
Deed
related
$1,652,758 · Jpmorgan Chase Bank NA
Aug 29, 2014
—
Keith & Jennifer Gronbach Family Tr
Berkeley Land Co INC
Grant Deed
$1,980,000 · Us Bank NA
Jul 11, 1978
$85,000
Berkeley Land Company INC
—
Grant Deed
related
—
Jul 11, 1978
—
Owner Name Unavailable
—
Grant Deed
related
—
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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