Property Search

A San Bernardino County CA property search can help residents, property owners, buyers, researchers, and other users locate assessor parcel information, assessment history, parcel maps, property characteristics, recorded-document indexes, and selected county mapping data. The county provides several official systems for these purposes, and each system serves a different function. This article explains how the Assessor’s property search works, what information is available, how assessment and ownership research differ, where historical records fit into the process, and which county office is responsible for each type of property information.

Assessor Property Search Basics

The San Bernardino County Assessor is responsible for locating, describing, and identifying ownership of property within the county for assessment purposes. The office also establishes assessed values for property subject to taxation, lists assessed values on the assessment roll, and applies legal exemptions.

The primary starting point for a parcel-level search is the county’s Assessor Property Information service. This page brings together several kinds of assessor information, including the Assessor GIS Dashboard, the Public Assessor Map, historical assessment roll information, downloadable property data files, parcel maps, property characteristics, owner transfer information, parcel change data, subdivision information, and Williamson Act parcel data.

The Public Assessor Map uses the Assessor’s Parcel Access application to provide publicly available property information through an interactive map of San Bernardino County. The county specifically recommends using Chrome or Firefox when accessing the application.

Users should also recognize an important limitation of the Assessor’s system: the Assessor-Recorder-Clerk does not provide special query services through the property information page. The publicly available systems are designed around the data and search functions the county has made available rather than customized research requests.

Information Available by Parcel

Property searches generally begin with information that identifies a parcel. An Assessor’s Parcel Number, commonly called an APN, is especially useful when a user needs to distinguish one parcel from another. The Assessor’s property information service is the appropriate county resource for looking up ownership information by APN for assessment-related purposes.

The Assessor’s publicly available data can also include property characteristics and assessment information. These records are maintained primarily for valuation and taxation purposes, so users should interpret the information within that context. The Assessor expressly states that its property data is maintained for internal use in determining property value for taxation and that the office does not guarantee that the data is complete or suitable for every possible use.

Property characteristics data is available in annual form, while current owner and all-owner data may be published in monthly files. The Assessor property information page also provides parcel change information, subdivision index data, and parcel maps. For users working with larger public datasets rather than a single property, these files may provide a more suitable starting point than an individual map search.

Parcel Maps and Boundaries

Parcel maps can help users understand how property is divided and identified in the assessment system. The Assessor publishes new and recently modified parcel maps on its property information page. These records can be especially useful when a street address alone does not clearly identify the parcel a user is researching.

The county also operates an Open Data Portal containing public maps, applications, datasets, documents, and other geographic information. Property-related material available through the portal includes a parcel dataset with property addresses, along with broader county mapping categories such as boundaries, zoning, imagery, transportation, and demographics.

The Assessor page additionally notes that GIS shape files can be obtained by contacting the County of San Bernardino Innovation and Technology Department’s GIS Team. Users who need spatial datasets should distinguish this type of GIS data from the Assessor’s ordinary parcel-information lookup.

Assessment Values and Roll History

A property search may involve either information about one parcel or broader assessment-roll history. These are not the same service. The parcel information system is intended for specific property searches, while the county’s assessment-roll pages provide historical valuation information at the county and city level.

The Annual Assessment Roll provides countywide and city valuation information from 1978 to the present. The page includes historical annual roll totals and city recap information. Users looking for the assessed value or property information associated with a specific parcel should return to the Assessor Property Information system rather than treating countywide roll totals as a parcel record.

What Assessed Value Means

The Assessor determines the assessed value of real property. Under Proposition 13, a property generally has a base-year value associated with acquisition, and the taxable value may increase by no more than 2 percent each year unless an event such as a qualifying change of ownership or new construction establishes a new assessment for the affected property or improvement.

Assessment records should not automatically be treated as estimates of what a property would sell for today. Depending on the property’s history, its taxable assessed value may differ substantially from its current market value. The county explains that people who have owned property for many years may have lower assessments than owners of newer or recently acquired properties because of the Proposition 13 assessment system.

When the Assessor must estimate market value, it may compare a property with similar properties that recently sold. Where appropriate, appraisal may also involve income-related analysis or replacement-cost analysis with adjustments for depreciation. These appraisal functions are part of the assessment process and should not be confused with a private appraisal performed for lending or purchase purposes.

Real Property Records Explained

The county’s Real Property information explains the type of property handled by the Assessor. Real property generally refers to ownership interests in land and improvements affixed to land, and may include houses, vacant land, apartment properties, commercial developments, industrial properties, water rights, mineral rights, trees, fixtures, and certain possessory interests.

The Assessor maintains building records and appraises real property parcels throughout the county. Property search users may therefore encounter records that separate land value from improvement value. In assessment terminology, an “improvement” commonly means a structure or other taxable improvement attached to the property. The word does not necessarily mean that the current owner recently remodeled the property.

Building Size and Characteristics

Assessor building records may not match architectural plans or builder documents exactly. The county explains that building measurements are rounded to the nearest foot under State Board of Equalization guidelines. For that reason, square-footage figures maintained for assessment purposes may differ slightly from figures calculated by an architect or builder.

Property owners should also avoid assuming that the Assessor has a complete permit history for every structure. The Assessor states that it has no legal obligation or business need to record every permit issued for every property. The absence of a permit number in Assessor records therefore does not establish that a permit was never issued.

Property Search Versus Ownership Records

One of the most common sources of confusion is the difference between assessor ownership information and legal title research. The Assessor identifies ownership as part of the assessment process, but the county expressly states that the Assessor does not determine legal ownership of property.

The Assessor’s property information is intended to support fair and accurate property assessments. It is not intended to serve as a legal determination of title. Users researching deeds, transfers, grantors, grantees, or chains of title should use Recorder records rather than relying only on the name displayed in an assessor property search.

The county’s Official Public Records Recorder’s Index provides access to indexed information about recorded documents. Recorded documents are indexed using information such as the document number, document date, document title, and the parties to the transaction identified as grantors and grantees.

The Recorder-County Clerk does not maintain property ownership searches by street address. For ownership information associated with an Assessor’s Parcel Number, the county directs users to the Assessor Property Information system. For recorded transactions involving particular people or documents, the Recorder’s Index is the more appropriate service.

Limits of the Recorder Index

The Recorder’s online document search covers records from 1925 to the present, but it is an index rather than an online archive of document images. The county states that actual document images cannot be viewed through the online index under the cited government code provision. Document contents may be viewed at specified Recorder-Clerk offices.

This distinction matters when a user sees a document listed in search results. An index entry can identify a potentially relevant deed or other recorded instrument, but the index itself does not provide the full contents of that recorded document.

Researching Previous Property Owners

Users trying to reconstruct ownership history need a different process from an ordinary parcel lookup. The county’s Property Research guidance explains how to research previous owners through a chain of title.

A chain of title is a sequence of records showing transfers of land from a seller, or grantor, to a buyer, or grantee. The county states that this research requires both the legal description of the property and the name of the current owner.

Legal Description Versus APN

A legal description is not the same as a street address or an Assessor’s Parcel Number. Depending on the property, the legal description may use references to a section, township, and range, or it may identify a subdivision, tract, block, and lot.

This distinction is critical during historical ownership research. A user may have the correct person’s name but still need to match the legal description before concluding that a recorded transaction concerns the property being researched.

Grantor and Grantee Research

For records available through the county’s indexed system, ownership research can proceed backward from the current owner. The researcher looks for the current owner as a grantee, confirms that the legal description matches, identifies the grantor named in that transaction, and then searches for that grantor as an earlier grantee.

The county recommends recording each transaction along the way, including the book and page or document number, particularly when the researcher expects to request copies later. The grantor/grantee index is available for records from 1958 to the present through the Recorder-Clerk’s system and office.

Records before 1958 require a different approach. The county states that these records are available on microfilm at the main Recorder office. The microfilmed index is organized by decade, and users need staff assistance to check out the applicable microfilm.

Historical Assessment Research

Historical property research is not limited to deeds. The San Bernardino County Historical Archive maintains Assessor Lot or Parcel Books dating from 1895 to approximately 1950. These books can sometimes help researchers estimate when improvements first appeared on a property.

The historical books may contain:

Owner or taxpayer name.
Subdivision, tract, block, and lot information.
Township, range, and section information.
Land valuation.
Improvement valuation.
Valuation for qualifying trees and vines.
Water valuation.

An entry showing an improvement does not identify the exact structure. The county explains that the record will not state whether the improvement was a house, barn, shed, or another type of structure. Researchers therefore should not treat an improvement entry as definitive proof of a particular building type.

Building Permit Research

Property records maintained by the Assessor and Recorder do not replace building-permit records. Permits are issued by county or city planning authorities, depending on the property’s jurisdiction. The county notes that building permits generally were not required in areas under San Bernardino County jurisdiction until approximately 1936, although certain cities required permits earlier.

For permit research, the correct starting point depends on where the property was located when the construction occurred. If the property is within a city, research should begin with that city. If the property is under county jurisdiction, permit research may be conducted through San Bernardino County Building and Safety customer service counters.

The Recorder and Historical Archives do not maintain copies of building permits. This separation of responsibilities helps explain why a property search may show assessment information about an improvement without providing the permit record associated with its construction.

Permitted Use and Zoning Questions

Another major limitation of an assessor property search is land-use authority. The Assessor does not determine how a property may legally be used. An assessor record may describe characteristics used for assessment, but those characteristics do not establish that a particular use, building, conversion, or improvement has been approved under current land-use rules.

The county states that property owners with questions about permitted use should contact the city where the property is located. For properties in unincorporated communities, permitted-use questions belong with the Land Use Services Department.

This distinction is especially important when reviewing older homes, additions, converted spaces, accessory buildings, or other property characteristics. A description appearing in assessment data should not be interpreted as a permit approval or zoning determination.

Preparing for a Property Search

The most useful information to gather depends on the type of research being performed. A basic parcel search and a chain-of-title investigation require different identifiers.

For an assessor property search, useful identifying information may include:

The Assessor’s Parcel Number when available.
The property address when supported by the search application or county parcel data.
The parcel location when using an interactive map.

For historical ownership research, the county specifically requires the current owner’s name and the property’s legal description. Researchers following the grantor and grantee trail should also record document numbers or book-and-page references as each transaction is identified.

For building-permit research, users should determine the jurisdiction responsible for the property, including whether the relevant construction occurred within a city or within county jurisdiction.

Common Property Search Mistakes

Several misunderstandings can lead users to the wrong record system or to conclusions that county property data does not support.

Treating an APN as Title

An APN identifies property for assessment purposes. It is useful for locating assessor information, but it is not a substitute for legal title documentation. Users investigating transfers or legal ownership should distinguish the Assessor’s assessment records from Recorder documents.

Searching Recorder Records by Address

The Recorder-County Clerk does not maintain ownership searches by property address. Recorded documents are indexed primarily through document information and the names of grantors and grantees. Parcel-based ownership searches belong in the Assessor Property Information system.

Assuming Assessor Data Proves Permits

Assessment records can include building characteristics, but the Assessor does not maintain every permit issued for every property. Missing permit information in an assessor record does not prove that construction was unpermitted.

Using Assessment Data for Zoning

The property information system exists to support assessments. It does not determine permitted property use. Zoning and land-use questions should be directed to the responsible city or, for unincorporated areas, the county’s land-use authority.

Confusing Assessed and Market Value

The value shown for property-tax assessment purposes may not equal present market value. Proposition 13 rules, ownership history, new construction, and prior assessment events can all affect taxable value.

Expecting Complete Deed Images Online

The Recorder’s online public-record system is an index. It can help identify documents, but it does not provide online access to the actual document images through that index.

Mailing Address Changes

Property owners who notice an incorrect mailing address should distinguish the mailing address maintained for assessment notices from the physical location of the parcel. The Assessor obtains mailing addresses initially from ownership-related documents such as a Preliminary Change in Ownership Report or recorded transfer document.

A mailing-address change may be requested only by the owner of record or a pre-designated agent and must be submitted in writing. According to the county, the request should include:

The Assessor’s Parcel Number or physical property address.
The new mailing address.
The signature of the property owner or agent.
The printed name of the owner or agent.
The date.

The Assessor’s mailing-address information is also provided to the Treasurer-Tax Collector for property-tax billing purposes. Keeping that address current helps ensure that assessment notices and tax-related correspondence are sent to the appropriate mailing address.

Property Data Limitations

County property data should be used with an understanding of its stated purpose and limitations. The Assessor maintains its data to support property valuation and taxation. Although the office works to maintain accurate information, it does not promise that every file is complete, error-free, or suitable for a particular independent purpose.

Users working with downloadable property files, parcel characteristics, ownership information, or historical assessment data should evaluate whether the level of accuracy is sufficient for the decision they are making. Assessment information should not be substituted for a legal determination of title, a land-use determination, or a permit record.

Names and address information may also be protected under California Government Code Section 7928.205. As a result, users should not assume that every data field potentially associated with a property will be available in downloadable public files.

Relevant County Offices

San Bernardino County Assessor
222 West Hospitality Lane, San Bernardino, CA 92415
909.387.8307

San Bernardino County Recorder-Clerk
222 West Hospitality Lane, San Bernardino, CA 92415
909.387.8306

San Bernardino County Open Data Portal
385 North Arrowhead Avenue, San Bernardino, CA 92415
888.818.8988

Property Search FAQs

How often does San Bernardino County update downloadable property data?

The county publishes several property datasets on different schedules. On the Assessor Property Information page, secured-roll and unsecured-roll files are available annually, with separate monthly files for more recent data. Current-owner and all-owner datasets are also published monthly, while property characteristics, owner transfer dates, parcel changes, subdivision indexes, and Williamson Act parcel information are generally provided as annual datasets. Users checking a recent transaction should pay attention to the date shown beside the monthly file rather than assuming every downloadable dataset was updated at the same time.

Can I open the Assessor’s property data in Excel?

Yes. San Bernardino County provides downloadable Assessor data files along with instructions for importing the files into Microsoft Excel. This can be useful when researching multiple parcels, sorting records, or working with countywide data rather than reviewing one property at a time. The county also publishes layout files that explain how fields are arranged within several datasets. Because these files are maintained for assessment purposes, users should review the applicable layout before interpreting individual columns.

Why did my property receive a supplemental assessment after a purchase or improvement?

A qualifying change of ownership or new construction can create a supplemental assessment. According to the county’s Real Property guidance, the Assessor compares the newly established assessed value with the value already assessed for the applicable period. If the new value is higher, additional taxes may result; if it is lower, a refund may result. New construction can include a new home, an addition, a swimming pool, or another newly created real-property improvement.

Will routine repairs cause my property to be reassessed?

Ordinary maintenance generally does not trigger a new assessment. The county specifically identifies painting and roof repairs as normal maintenance rather than new construction. By contrast, adding new taxable improvements may result in assessment of the added portion. The Assessor states that when an addition such as a bedroom, pool, or second garage is completed, the new improvement is assessed and added to the existing value rather than automatically reassessing the entire original home.