Baton Rouge Property Tax Roll - Owners, Exemptions & 11 Years of Values

Every property in East Baton Rouge Parish - Baton Rouge, Baker, Central and Zachary - with its taxpayer, its exemptions and its eleven-year value trail.

The parish Assessor publishes the full tax roll as open data: 4,019,268 assessment lines covering the 2015 through 2025 rolls, about 352,000 to 376,000 lines each. A property appears once per line - its acreage, its lot, and one line per improvement standing on it - and every line carries the taxpayer, the exemption, the tax freeze and the value. Because the roll is published year after year in one table, a property's eleven-year value trail is the source's own data, not something reconstructed here.

Low cost

From $0.0001 per record, down to $0.00006 at Gold Pay-per-event: you are charged per record delivered, and nothing for the query.

What you get

Block	Fields
Identity	tax year, property number (and the legacy hyphenated form), unit type, ward, subdivision, block, lot, legal description
Taxpayer	taxpayer name, and the address of record in the three source columns (taxpayerAddr1 / 2 / 3) plus a composed mailingAddress
Classification	assessment type, assessment status, unit type, structure use, vacant-lot flag, number of units
Value	fair market value, total assessed value, taxable value - plus the homestead exemption amount
Exemptions & freeze	homestead exemption type and amount, tax freeze (NONE / OVER 65 / DISABLED VET / DISABLED, plus a rare OTHER), restoration tax abatement
Transfer	transfer instrument type, transfer date, deed number
Derived	composed mailing address, and on a property trail the year-over-year market and assessed movement

Eleven years of value, per property

Ask for one property and you get every roll it appears on, oldest first, with its lines summed per year and the movement computed between consecutive rolls:

{ "mode": "property", "propertyNumber": "35" }

2015   8,000
2016   8,000        0.0%
2017   8,000        0.0%
2018   8,000        0.0%
2019   8,000        0.0%
2020   8,800      +10.0%
2021   8,800        0.0%
2022   8,800        0.0%
2023   8,800        0.0%
2024   9,856      +12.0%
2025   9,856        0.0%

Eleven consecutive rolls on one property number - the reassessment years and the flat years in between.

The parish's movement without shipping a line

mode=trend returns one row per tax year for whatever scope you filter to:

{ "mode": "trend" }

2015   352,093 lines   market 38,689,476,487
2016   354,161 lines   market 39,106,691,062    +1.1%
2017   357,562 lines   market 36,484,308,929    -6.7%
2018   361,539 lines   market 36,511,714,230    +0.1%
2019   364,655 lines   market 38,006,801,946    +4.1%
2020   367,257 lines   market 40,847,800,370    +7.5%
2021   369,632 lines   market 41,884,785,743    +2.5%
2022   372,877 lines   market 43,429,594,730    +3.7%
2023   370,144 lines   market 45,680,406,086    +5.2%
2024   373,713 lines   market 47,958,221,257    +5.0%
2025   375,635 lines   market 49,093,487,523    +2.4%

Exemptions, freezes and homesteads

The roll records who is exempt from what, and it is filterable:

Tax freeze	2025 lines
NONE	339,147
OVER 65	34,872
DISABLED VET	936
DISABLED	680

homesteadExemptType separates the 202,262 lines carrying a homestead exemption from the 173,373 that do not, and the exemption amount is a column of its own alongside the taxable value - so the difference between what a property is worth and what it is taxed on is visible directly.

Modes

• rows (default) - assessment lines matching your filters, from the newest tax year.
• property - one property's full eleven-year roll, its lines summed per year, with the value movement computed between years. Takes propertyNumber.
• trend - per-tax-year parish totals for a scope: line count and summed market and assessed value, one row per year.
• aggregate - one count row per group, rolled up by tax year, unit type, assessment type, assessment status, tax freeze, homestead exemption, structure use or ward.

Inputs

Filter by taxYear (2015-2025, defaults to the newest), assessmentType, assessmentStatus, unitType, taxFreeze, homesteadExemptType, propertyNumber, legacyPropertyNumber, ward, structureUse, subdivision, address, taxpayerName, mailingCity, mailingZip, and value bounds minMarketValue / maxMarketValue / minTaxableValue / maxTaxableValue.

A filter that belongs to another mode is rejected outright rather than silently ignored - so a query you narrowed never comes back unnarrowed.

Example inputs

Every property owned by a business

{ "mode": "rows", "taxpayerName": "LLC", "minMarketValue": 1000000,
  "maxResults": 500 }

One property's eleven-year value trail

{ "mode": "property", "propertyNumber": "35" }

The parish's eleven-year movement

{ "mode": "trend" }

Senior-frozen properties

{ "mode": "rows", "taxFreeze": "OVER 65", "maxResults": 500 }

How many lines by unit type

{ "mode": "aggregate", "groupBy": "unitType" }

Example output

mode=rows, propertyNumber=19, taxYear=2025 - one assessment line, with its land classification, the taxpayer of record and the three value columns:

{
 "platform": "brla-tax-roll",
 "source": "east-baton-rouge-parish-roll",
 "mode": "rows",
 "recordType": "assessment-line",
 "groupKey": "",
 "groupCount": "",
 "groupBy": "",
 "assessedValueChange": "",
 "assessedValueChangePct": "",
 "assessmentStatus": "ACTUAL",
 "assessmentType": "REAL PROPERTY",
 "block": "",
 "deedNumber": "",
 "fairMarketValue": "51500",
 "homesteadExemptType": "NO",
 "homesteadExemption": "0",
 "legacyPropertyNumber": "000-0001-9",
 "legalDescription": "Ward: 1-1, Subdivision: DEVALL TOWN, Lot: 5 PT, Block: 12.     SOUTHERN PORTION OF LOT 5 SQ. 12 OR67, FRONTING 64 FT. ONTHE NORTH SIDE OF LAUREL ST. X 150FT.",
 "lot": "",
 "mailingAddress": "700 MAIN ST BATON ROUGE, LA 70802",
 "marketValueChange": "",
 "marketValueChangePct": "",
 "parcelAddress": "",
 "prevTaxYear": "",
 "propertyNumber": "19",
 "restorationTaxAbatement": "NO",
 "sourceUpdatedAt": "2026-01-20",
 "structureUse": "",
 "subdivision": "",
 "taxFreeze": "NONE",
 "taxYear": "2025",
 "taxableValue": "5150",
 "taxpayerAddr1": "700 MAIN ST",
 "taxpayerAddr2": "BATON ROUGE, LA 70802",
 "taxpayerAddr3": "",
 "taxpayerName": "LA CAPITOL FEDERAL CREDIT UNION",
 "totalValue": "5150",
 "transferDate": "",
 "transferInstrument": "",
 "unitType": "LOT",
 "units": "1",
 "vacantLot": "NO",
 "ward": ""
}

mode=aggregate, groupBy=taxFreeze, taxYear=2025 - the 2025 roll by freeze category:

NONE            339,147
OVER 65          34,872
DISABLED VET        936
DISABLED            680

Notes on the data

• A property is a set of lines, not a row. One property number carries its acreage, its lot and one line per improvement. On the 2025 roll that is 375,635 lines against 209,443 properties - so a line count is not a property count, and this description does not call it one. The unitType field tells you which kind of line you are looking at, and mode=property sums them per year so a value is never compared line-to-line across years.
• This source's columns do not mean the same thing every year, and that is left visible rather than smoothed over. The taxpayer mailing address moves between columns: through 2022 the street sits in taxpayerAddr1 and taxpayerAddr3 holds "CITY, ST ZIP"; in 2024 the street is in taxpayerAddr2; in 2025 it is back in taxpayerAddr1. The address parts are therefore returned verbatim under their source column names, with mailingAddress offered only as a best-effort join - and a mailingCity / mailingZip search is applied across all three columns rather than to one fixed mapping, which would return nothing for most years. Treat the address as "what the roll recorded that year", not as a field comparable across years.
• Several columns stop being populated, and they do not all stop in the same year. structureUse, transferDate, deedNumber, parcelAddress and ward are filled through the 2023 roll and then drop away (structureUse: 369,933 lines in 2023, none in 2024; parcelAddress: 370,144 in 2023, 3 in 2024). subdivision, block and lot stop a year earlier - they are already empty by 2023. Everything is still returned when present, and the address description says which rolls it covers rather than silently returning nothing.
• Both property-number forms are returned. The roll also carries the older hyphenated number (010-0019-5) in its own column, and either form can be matched - useful when working from an older document that only carries one of them.
• The source writes the literal string "NULL" where it means empty, and at scale - 358,245 rows of the taxpayer address column carry it on the 2023 roll alone. It is normalised to empty here, so a "NULL" string is never served as though it were an address.
• Two fields are carried but not offered as filters. On the 2025 roll vacant_lot reads "NO" on every single line and the transfer-instrument column is blank on all but three, so a filter on either could only ever return everything or nothing. They remain in the output, and older rolls may populate them.
• Two filters only cover part of the eleven-year window. taxFreeze is empty on every roll before 2021 (2,157,267 lines, 54% of the table) - the freeze column is simply not populated earlier. And unitType uses different labels over time: LOT exists in 2015-2016 and from 2023, but not at all in 2017-2022, where land lines are recorded as ACREAGE. Both are honest filters on the rolls that carry them; a query that returns nothing for an early year is the source's record, not a matching failure.

Output

One JSON record per line, and the same key set whichever mode produced it - so the output loads into a table or a dataframe without a schema union step. Aggregate, trend and property-history records carry their key, count and dimension in the same shape as a line record.

Pay-per-event - you are charged per record delivered, never for the query itself. The run stops cleanly if you set a spend limit on your Apify account.