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    Diamond Bar, CA
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    Diamond Bar, CA Office Buildings for Sale

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    Move-in Ready Office Building
    Updated: Nov 21, 2025
    Move-in Ready Office Building

    1400 Montefino Avenue, Diamond Bar, CA 91765

    $15,900,000
    54,951 sqft
    Move‑in ready condition
    Entire building available with 55,221 Rentable Square Feet, divisible to 27,494 Rentable Square Feet
    Ample free parking: 3.98/1000, 220 total spaces
    Large open floor plate
    Easy access to 60/57 freeways
    View details

    This listing looks promising.

    Here's a quick look at some key insights for

    1400 Montefino Avenue, Diamond Bar, CA 91765

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    • Est. Cap Rate

      7.6%
      Above avg (5.9%)

    • Est. NOI

      $1.2M
      Annual

    • Mortgage

      $8M
      Feb 2017

    • Last Sold

      Sep 2011
      $6.5M

    • Property Type

      Office Building
      Built 1985
    View Property Analytics
    Three-Story Multi-Tenant Office Building
    Updated: Jun 29
    Three-Story Multi-Tenant Office Building

    556 N Diamond Bar Blvd, Diamond Bar, CA 91765

    $10,750,000
    47,196 sqft 2.76 AC lot
    47,196 SF, three‑story Class B multi‑tenant office building built in 1987
    2.76‑acre site with parking ratio of 4.0 per 1,000 SF plus reciprocal parking agreement
    Reciprocal parking with Global Mission Church adds 49 stalls weekdays & Saturdays 6:00 AM–6:30 PM through March 18, 2033
    Currently 95.1% occupied with 31 signed tenants across 47,196 SF; no single tenant over 21%
    Highly traveled North Diamond Bar Boulevard frontage with 38,000 vehicles per day
    View details
    Based on your search, we've compiled 80 Potential Opportunities for your consideration. Besides 2 Active listings in Diamond Bar, CA, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 70 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Gated Multi-Building Commercial Property
    Gated Multi-Building Commercial Property

    114 Olinda Drive, Brea, CA 92823

    $1,707,500

    Gated multi-building site with parking for 20+ vehicles and Neighborhood Commercial zoning for owner-user or institutional uses.

    View details
    Gated Multi-Use Commercial Property
    Gated Multi-Use Commercial Property

    102 Olinda Drive, Brea, CA 92823

    $2,250,000

    Built in 2001 with parking for 20+ vehicles and Neighborhood Commercial zoning for flexible owner-user or institutional use.

    View details
    New Construction Office Building
    New Construction Office Building

    44 Rio Rancho Rd, Pomona, CA 91766

    $1,600,000
    2,638 sqft

    2,638 SF office building with secure parking for sale.

    View details
    Renovated Office Building with Yard
    Renovated Office Building with Yard

    1420 W Holt Avenue, Pomona, CA 91768

    $949,000
    1,536 sqft

    Move-in ready office building with secure yard near freeways.

    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Santa Ana Land Development Opportunity
    Santa Ana Land Development Opportunity

    846 N Van Ness Avenue, Santa Ana, CA 92701

    $758,000
    0.21 AC lot

    Prime Santa Ana lot ideal for development with high visibility.

    View details
    Rialto Commercial Lot with Potential
    Rialto Commercial Lot with Potential

    Acacia, Rialto, CA 92376

    $100,000
    0.20 AC lot

    8,580 SF commercial lot with residential potential in Rialto.

    View details
    Zoned Commercial Land Parcel
    Zoned Commercial Land Parcel

    410 E Citrus Street, Colton, CA 92324

    $115,000
    0.21 AC lot

    Commercially zoned land in Colton offers a flexible site for a variety of small-scale business uses.

    View details
    San Bernardino Commercial Land Opportunity
    San Bernardino Commercial Land Opportunity

    Arrowhead Avenue, San Bernardino, CA 92405

    $89,900
    0.15 AC lot

    Commercial land near freeways and retail centers in San Bernardino.

    View details

    Off-Market Properties in Diamond Bar, CA

    Consider similar Off-Market properties in Diamond Bar, CA. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    2705 Diamond Bar Blvd Ste, Unit 208
    OFFICE BUILDING

    2705 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-3554

    Unit 208
    Value Estimation by Request
    710 sqft 0.93 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 218
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3785

    Unit 218
    Value Estimation by Request
    420 sqft 2.40 AC lot
    View details
    660 Diamond Bar Blvd Ste, Unit 128
    OFFICE BUILDING

    660 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-1034

    Unit 128
    $600,000
    Estimated value
    1,540 sqft 1.42 AC lot
    View details
    1470 Vly Vis Dr Ste, Unit 205
    OFFICE BUILDING

    1470 Vly Vis Dr Ste, Diamond Bar, CA 91765-3967

    Unit 205
    Value Estimation by Request
    1,560 sqft 3.63 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 119
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3783

    Unit 119
    Value Estimation by Request
    920 sqft 2.40 AC lot
    View details
    660 Diamond Bar Blvd Ste, Unit 208
    OFFICE BUILDING

    660 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-1034

    Unit 208
    Value Estimation by Request
    840 sqft 1.42 AC lot
    View details
    640 Diamond Bar Blvd, Unit 7B
    OFFICE BUILDING

    640 Diamond Bar Blvd, Diamond Bar, CA 91765-1037

    Unit 7B
    Value Estimation by Request
    1,704 sqft 6.46 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 126
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3784

    Unit 126
    Value Estimation by Request
    920 sqft 2.40 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 110
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3782

    Unit 110
    Value Estimation by Request
    920 sqft 2.40 AC lot
    View details
    21680 Gtwy Ctr Dr
    OFFICE BUILDING (MULTI-STORY)

    21680 Gtwy Ctr Dr, Diamond Bar, CA 91765-2453

    $17,830,000
    Estimated value
    84,188 sqft 1.20 AC lot
    View details
    Diamond Bar, CA 91765
    OFFICE BUILDING (MULTI-STORY)

    Diamond Bar, CA 91765

    $560,000
    Estimated value
    10.95 AC lot
    View details
    1470 Vly Vis Dr Ste, Unit 102
    OFFICE BUILDING

    1470 Vly Vis Dr Ste, Diamond Bar, CA 91765-3903

    Unit 102
    Value Estimation by Request
    990 sqft 3.63 AC lot
    View details
    660 Diamond Bar Blvd Ste, Unit 228
    OFFICE BUILDING

    660 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-1055

    Unit 228
    Value Estimation by Request
    500 sqft 1.42 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 101
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3782

    Unit 101
    Value Estimation by Request
    880 sqft 2.40 AC lot
    View details
    660 Diamond Bar Blvd Ste, Unit 100
    OFFICE BUILDING

    660 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-1034

    Unit 100
    $710,000
    Estimated value
    1,200 sqft 1.42 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 205
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3784

    Unit 205
    Value Estimation by Request
    420 sqft 2.40 AC lot
    View details
    3333 Brea Cyn Rd Ste, Unit 217
    OFFICE BUILDING

    3333 Brea Cyn Rd Ste, Diamond Bar, CA 91765-3785

    Unit 217
    Value Estimation by Request
    420 sqft 2.40 AC lot
    View details
    1470 Vly Vis Dr Ste, Unit 110
    OFFICE BUILDING

    1470 Vly Vis Dr Ste, Diamond Bar, CA 91765-3903

    Unit 110
    $675,000
    Estimated value
    1,220 sqft 3.63 AC lot
    View details
    2705 Diamond Bar Blvd Ste, Unit 118
    OFFICE BUILDING

    2705 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-3557

    Unit 118
    $1,665,000
    Estimated value
    1,600 sqft 0.93 AC lot
    View details
    2705 Diamond Bar Blvd Ste, Unit 100
    OFFICE BUILDING

    2705 Diamond Bar Blvd Ste, Diamond Bar, CA 91765-3557

    Unit 100
    $1,675,000
    Estimated value
    820 sqft 0.93 AC lot
    View details
    680 Brea Cyn Rd Ste, Unit 258
    OFFICE BUILDING

    680 Brea Cyn Rd Ste, Diamond Bar, CA 91789-3007

    Unit 258
    Value Estimation by Request
    1,470 sqft 0.95 AC lot
    View details
    680 Brea Cyn Rd
    OFFICE BUILDING

    680 Brea Cyn Rd, Diamond Bar, CA 91789-3005

    $1,125,000
    Estimated value
    1,910 sqft 0.95 AC lot
    View details

    Diamond Bar, CA Office Buildings Market Trends and Statistics

    Explore 72 office buildings for sale in Diamond Bar, CA on our real estate platform. These investment opportunities span a total of 102,147 square feet of properties for sale, with an estimated market value of $26,650,000.

    Sale prices for office properties in Diamond Bar, CA start at $10,750,000, averaging $13,325,000, and reaching up to $15,900,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

    List
    Map

    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Office Units 23
    Office buildings 6
    Medical Office Space 3
    Coworking space 1
    Serviced offices 1

    Demographics Overview

    Population 86K
    Population Growth (5Y) -6.5%
    Median Household Income $114,768
    College Educated 71.4%

    High-Yield Neighborhoods for Investment

    Identify Diamond Bar submarkets with the highest inventory density on the market and evaluate the average listing prices of real estate assets

    Neighborhood Average Price
    91765 $15.9M

    Taxes & Financing

    Tax Rate (average for all types) 1.27%
    Property Tax per SF $24.97 per SF
    Tax Rate vs County Average 0.03 pp above county avg
    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in Los Angeles County

    New Delisted

    Total CRE Inventory on Market (SF)

    Average Property Price per SF

    For-sale pricing trends across core commercial property types in Los Angeles County

    Retail

    Office

    Residential Income

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