Building permits, zoning and septic rules in Dublin, Texas

At a glance

Building permits

City building permits are issued by Code Enforcement/Development Services.¹

Zoning

Dublin has municipal zoning with district-specific controls.²

Residential code

2018 International Residential Code adopted for covered residential construction.³

Minimum home size

SF: 1,000 square feet; RE: 1,500 square feet of livable floor space.⁵⁶

Minimum lot size

SF: 7,000 square feet; RE: 1 acre.⁷⁸

Septic contact

Ask Erath County Environmental Health to confirm service inside Dublin city limits.⁹

Private wells

Middle Trinity Groundwater Conservation District requires well registration and operating permits in specified cases.¹⁰

Who to call

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Do you need a building permit in Dublin, TX?

Dublin Code Enforcement/Development Services issues the building permits required by the city, along with electrical, mechanical and plumbing permits.¹ Dublin has adopted the 2018 International Residential Code for covered dwellings, townhouses and accessory structures.³ Ask Development Services which building and trade applications your project needs before construction.¹

Dublin building-permit fees are based on construction valuation, and the fee schedule is held in the city secretary’s office.¹¹ Request the current schedule with your project description rather than estimating the fee from your contractor’s price.¹¹

Who handles building permits and zoning in Dublin?

Dublin Code Enforcement/Development Services checks zoning and variance requests and supervises inspections of public and private construction work.¹ Reach the department through the city’s general contact number, 2544453331, or [email protected]; the city lists its address as 213 E Blackjack St., Dublin, TX 76446.¹

Ask the city to confirm the zoning district, required building applications and inspection sequence for your address.¹ We could not confirm an ordinary residential certificate-of-occupancy requirement or an owner-builder exemption in Dublin; include both questions when discussing your project with Development Services.¹

Does Dublin have zoning, minimum home sizes and lot limits?

Dublin has municipal zoning, and the district matters when sizing a house or choosing a lot.² In Dublin’s SF district, the main residence needs at least 1,000 square feet of livable floor space, excluding garages, porches, breezeways and incidental storage areas.⁵ The SF minimum lot area is 7,000 square feet, and main and accessory buildings together may cover no more than 50% of the lot.⁷¹²

Dublin’s RE district instead requires a minimum lot area of 1 acre and at least 1,500 square feet of livable floor space in the main residence, with the same listed exclusions.⁸⁶ Ask Development Services to identify the parcel’s district and applicable yard dimensions before choosing a house plan.¹

Can you live in an RV, tiny home or manufactured home in Dublin?

We could not confirm whether Dublin allows residential RV occupancy or tiny homes as a separate category; ask Code Enforcement/Development Services about the proposed unit and its intended use at the specific address.¹ A small house in Dublin’s SF district must still satisfy the district’s 1,000-square-foot minimum livable floor-space rule for the main residence.⁵

Manufactured homes are conditional uses in Dublin’s SF-1B district and must comply with the referenced MH-1/MH-2 height and area regulations.¹³ Manufactured-home parks are separately conditional and subject to the city’s park provisions.¹³ Ask Development Services about zoning approval before buying or moving a manufactured home.¹

How do septic permits and private wells work inside Dublin?

Erath County Environmental Health provides permitting and inspection for new and existing septic systems, but we could not confirm that office’s jurisdiction inside Dublin city limits.⁹ Call Environmental Health before any septic work and ask which authority handles the Dublin parcel.⁴ Texas generally requires a permit and approved plan to construct, alter, repair, extend or operate an on-site sewage facility, subject to exemptions and local requirements.¹⁴ Do not assume acreage alone provides an exemption: the state’s 10-acre exception has additional site-evaluation, setback and single-dwelling conditions, and local requirements may be stricter.¹⁴

Middle Trinity Groundwater Conservation District requires registration of existing, new and replacement wells and ownership transfers.¹⁰ A well estimated to pump more than 17 gallons per minute, or a well on 10 acres or less unless the tract predates district formation through platting, requires an operating-permit application before drilling.¹⁰

What are the steps before building a home in Dublin?

1. Ask Dublin Development Services to confirm the address’s zoning district, proposed use and any variance request.¹
2. Match the house and lot to the district’s dimensional rules; Dublin’s SF and RE districts have different minimum home and lot sizes.⁵⁶⁷⁸
3. Request the current valuation-based building-permit fee schedule and discuss the building and trade applications with Development Services.¹¹¹
4. If septic is proposed, ask Erath County Environmental Health to confirm the parcel’s permitting authority before work begins.⁴
5. If drilling a private well, discuss registration and operating-permit requirements with Middle Trinity Groundwater Conservation District before drilling.¹⁰

For land outside Dublin city limits and municipal extraterritorial jurisdictions, Erath County’s guide explains the county’s different answer: Erath County does not issue residential or business building permits there.¹⁵

Watch-outs

• Dublin’s adopted residential-code section names the 2018 edition, while a local-amendment section refers to 2006; ask Development Services which amendments apply to your plans.³
• We could not confirm residential RV occupancy, tiny-home treatment or an owner-builder exemption inside Dublin; ask Code Enforcement/Development Services before committing to that approach.¹
• Erath County’s absence of county zoning does not remove Dublin’s municipal zoning controls.¹⁶²

Sources

1. Dublin Code Enforcement/Development Services (ci.dublin.tx.us)
2. Sec. 102-323. Height and area regulations (Dublin), quoted and re-checked
3. Sec. 14-341. Adoption of International Residential Code (Dublin), quoted and re-checked
4. County Clerk | Erath County, TX, quoted and re-checked
5. Sec. 102-323. Height and area regulations (Dublin), quoted and re-checked
6. Sec. 102-303. Height and area regulations (Dublin), quoted and re-checked
7. Sec. 102-323. Height and area regulations (Dublin), quoted and re-checked
8. Sec. 102-303. Height and area regulations (Dublin), quoted and re-checked
9. Erath County Environmental Health Department (co.erath.tx.us)
10. Permits and Forms — Middle Trinity Groundwater Conservation District, quoted and re-checked
11. Sec. 14-63. Building permit fees (Dublin), quoted and re-checked
12. Sec. 102-323. Height and area regulations (Dublin), quoted and re-checked
13. Sec. 102-332. Use regulations (Dublin), quoted and re-checked
14. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
15. County Clerk | Erath County, TX, quoted and re-checked
16. County Clerk | Erath County, TX, quoted and re-checked

Written October 11, 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.