Lubbock, TX Accessory Structures: ADU Impact Fees (2026)

Lubbock's fee schedule is set by City Council resolution and administered by the Building Inspection Department and Lubbock Water Utilities. Building permit fees are based on construction valuation under the locally adopted International Residential Code. Plan-review fees are commonly assessed as a percentage of the building permit fee. Separate trade permits are required for electrical, plumbing, and mechanical work, each with its own fee. Lubbock Water Utilities charges water tap fees and wastewater connection charges when a new service is required; ADUs that share the primary dwelling's existing tap and meter generally pay no new tap fee, but some jurisdictions assess a secondary unit equivalent residential unit (ERU) charge. Texas Local Government Code Chapter 395 authorizes municipal impact fees for roads, water, and wastewater, and Lubbock's impact fee program covers water and wastewater facilities. Texas has no statewide ADU fee exemption, so the city retains discretion to charge full fees. Atmos Energy provides natural gas; Xcel Energy/Lubbock Power & Light provides electric service; both have separate service-extension policies and fees. Total fees for a small Lubbock ADU sharing utilities typically range from $1,500 to $4,000 in building and trade permits; new utility connections can add $3,000 to $8,000.