Unincorporated Union Parish, Louisiana requires a building permit, issued through the parish's E-911 Administration Office rather than a separate building department12. Union Parish has no zoning, so minimum lot size, setbacks and RV, tiny-home or manufactured-home occupancy are unregulated by parish zoning outside city limits34. Septic systems are not a parish permit at all: Louisiana's state health officer permits individual sewerage systems statewide, administered locally through the parish health unit56. Louisiana's State Uniform Construction Code lets a homeowner act as their own owner-builder, so no licensed contractor is required to pull the permit7.
At a glance
- Building permit
- Required, through the E-911 Administration Office1
- Zoning
- None; parish ordinances have no zoning chapter3
- Septic permit
- Required, issued by the state health officer, not the parish58
- RV / tiny home living
- Unrestricted by zoning outside city limits4
- Owner-builder
- Allowed under Louisiana's state construction code7
- New building permit / 911 address fee
- $40 for a new home or mobile home (includes a 911 sign)2
- Minimum lot size (state exempt-subdivision rule)
- 22,500 sq ft and 125 ft of frontage, where it applies9
- Driveway on a state highway
- LaDOTD Access Connection Permit required10
Who to call
Building permits
Union Parish E-911 Administration Office
Issues building permit applications and assigns 911 addresses for new construction in Union Parish, working out of the Union Parish Courthouse
100 E Bayou St., Suite 102, Farmerville, LA 71241
Also useful
Parish governing authority; adopts the Police Jury Code of Ordinances (no zoning chapter) and oversees the Road Department and Public Works
303 E Water St., Farmerville, LA 71241
Contact details are copied from each office’s official page and were checked against it on September 24, 2026.
Do you need a building permit in Union Parish, Louisiana?
Yes: unincorporated Union Parish requires a building permit, and Louisiana's statewide construction code requires one too111. The parish issues that permit through its E-911 Administration Office rather than a separate building department, because the same office assigns the 911 address every new structure needs12. A new address application for a new home or mobile home costs $40, which includes a 911 yard sign; inside Farmerville's city limits the fee is $50 instead2. Recreation or agricultural structures, boat houses and electronic gates carry a $20 fee each, and a sewer-system upgrade application is also $20, none of which include the yard sign2. Louisiana's State Uniform Construction Code allows a homeowner to act as their own owner-builder, so Union Parish does not require a licensed general contractor to pull the permit7.
Who is the Union Parish building department, and how do you reach them?
Union Parish has no separate building department: the Union Parish E-911 Administration Office issues building permit applications, working out of the Union Parish Courthouse at 100 E Bayou St., Suite 102 in Farmerville21. It is open 8:00 am to 4:00 pm Monday through Friday, including through lunch, and can be reached at 318-368-09112. Have the name of your road and the approximate footage to your nearest 911 neighbor ready when you apply2. For anything outside the E-911 office's scope, such as parish ordinances, the Road Department or the Police Jury itself, the Union Parish Police Jury's main office is at 303 E Water St., Farmerville, LA 71241, reached at 318-368-3296122.
Does Union Parish have zoning?
Union Parish has no zoning: its Police Jury Code of Ordinances, as published on Municode, contains no zoning chapter3. Louisiana law would let the Police Jury adopt zoning districts covering the whole parish, including unincorporated land, since Union Parish is not one of the four parishes excluded from that grant, but the Police Jury has not exercised that power13. Because no zoning ordinance exists, accessory dwellings, RVs used as housing, tiny homes and manufactured homes are all unrestricted by parish zoning outside city limits4. That silence has one statutory exception: a state law sets a 22,500-square-foot minimum lot size and 125 feet of minimum frontage for certain unincorporated single-family subdivisions statewide, unless a parish or population exclusion applies9.
How do septic permits work in Union Parish?
Septic systems in Union Parish are not permitted by the parish at all: Louisiana law puts individual sewerage-system permitting under the state health officer, administered locally through the parish health unit sanitarian56. A permit is required before an individual sewage system is installed, altered or operated, and plans and specifications must be approved as part of that permit8. A septic tank system is allowed only where a community-type sewer system is not available, which describes most of unincorporated Union Parish14. Final approval needs either an on-site inspection by the state health officer's representative or a Certification by Installer form filed within 15 days of completion, and the installer must notify the parish health unit before installation begins15. Soils make this more than paperwork here: only about 1.4% of Union Parish's land is rated free of severe limits for a conventional septic drain field, among the lowest shares in this guide series, so plan on an engineered or alternative system on nearly every site16.
Can you live in an RV or tiny home on your land in Union Parish?
Living in an RV or tiny home on unincorporated land in Union Parish is unrestricted by zoning, because the parish has no zoning ordinance4. That is a zoning-only answer: an RV or tiny home used as a residence still needs its own 911 address and building permit application through the E-911 Administration Office, the same as a house, and its sewage disposal still needs a state septic permit if it is not on a community sewer system128. With only about 1.4% of the parish's soils rated free of severe limits for a conventional septic drain field, an RV or tiny home relying on a standard system is unlikely to pass, so budget for the same septic cost a full house would face16. A Louisiana Office of State Parks rule limiting unreserved stays to 14 nights or 15 days applies only to state park facilities, not to a homeowner's own land in Union Parish, so it does not answer this question17.
Building a home in Union Parish: the steps, in order
- Apply for your building permit and 911 address through the E-911 Administration Office at 318-368-0911; bring the name of your road and the approximate footage to your nearest 911 neighbor2.
- Budget $40 for a new home or mobile home application, including a 911 yard sign, or $50 if the address falls inside Farmerville's city limits2.
- If the site will use a septic system, contact the parish health unit sanitarian for a Louisiana individual sewerage-system permit before installation begins85.
- Ask about a site evaluation early: only about 1.4% of Union Parish's soils are rated free of severe limits for a conventional septic drain field, so most sites need an engineered or alternative system16.
- Have the licensed septic installer file the Certification by Installer within 15 days of completion, or arrange a state health officer inspection instead15.
- If the driveway connects to a state highway, get a LaDOTD Access Connection Permit signed and numbered before construction begins10.
- Because Union Parish has no zoning, check the recorded deed and any subdivision restrictions yourself; the parish will not review lot size or setbacks unless the statewide 22,500-square-foot exempt-subdivision rule applies9.
What to check before you buy land in Union Parish
Soils and septic come first: only about 1.4% of Union Parish's land is rated free of severe limits for a conventional septic drain field, among the lowest shares of any county in this guide series, so price in an engineered or alternative system before making an offer16. The parish is heavily wooded, at about 85.8% forest cover, and 94.6% of its land sits at 15% slope or less, so timber and gentle terrain are the norm, not the exception1819. Rainfall runs high at 56.5 inches a year, with severe drought in about 18.4% of years, so drainage matters as much as dry-year water supply2021. Federal land covers about 6.5% of the parish, worth checking if a parcel borders it22. Union Parish sits about 85 miles from the nearest metro area with a population density of about 24 people per square mile, among the more remote counties in this guide series2324. Typical homeowner's insurance runs about $1,827 a year, and the effective property tax rate is low, about 0.4%, for a median bill near $470 a year on the parish's typical home252627. Farmland trades at roughly $3,928 an acre against a typical home value around $165,091, both well below many of the Texas counties in this series2829.
Watch-outs
- Union Parish's E-911 Administration Office, not a separate building department, issues the building permit, so have your road name and 911-neighbor footage ready when you call 318-368-09112.
- Only about 1.4% of Union Parish's soils are rated free of severe limits for a conventional septic drain field, so budget for a site evaluation and likely an alternative system on nearly every site16.
- Union Parish could adopt zoning under state law, since it is not one of the four parishes excluded from that grant, so confirm the Police Jury has not passed a new zoning ordinance since this guide was written before relying on the parish-wide 'no zoning' answer13.
- Septic permits here come from the state health officer through the parish health unit, not from Union Parish government itself, so don't call the Police Jury expecting to pull that permit6.
Sources
- Union Parish Police Jury E-911 (Building Permits) (2026 county census)
- Union Parish E-911 Administration Office (uppj.org)
- Union Parish Police Jury Code of Ordinances (Municode) (2026 county census)
- Louisiana law on county zoning and building authority
- Louisiana Department of Health Onsite Wastewater Program (2026 county census)
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Louisiana State Uniform Construction Code Council (2026 county census)
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- RS 33:106.1 — Planning commissions; exempt subdivisions; septic tanks and field drains permitted (Louisiana statewide rule), quoted and re-checked
- LaDOTD Access Connections Policy (Louisiana statewide rule), quoted and re-checked
- Louisiana Revised Statutes 40:1730.23 — Enforcement of building codes by municipalities and parishes (Louisiana statewide rule), quoted and re-checked
- Union Parish Police Jury (uppj.org)
- La. R.S. 33:4780.40 — Regulation authorized (Louisiana statewide rule), quoted and re-checked
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Louisiana Administrative Code Title 51, Part XIII, Public Health—Sanitary Code (Louisiana statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Louisiana Office of State Parks Policy and Procedure Memorandum #6 — Reservation Changes and Refunds (Louisiana statewide rule), quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Federal land share: Bolthole Index county data
- Distance to the nearest metro area: Bolthole Index county data
- Population density: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Farmland value per acre (USDA census): Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
Written September 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.