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Cedar Park, TX Accessory Structures: ADU Impact Fees (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Applies to
Town Center Mixed Residential Area
Min. water LUE
One-half LUE per unit
Min. wastewater LUE
One-half LUE per unit
Utilities
Submetered from principal dwelling
Max unit size
600 square feet

Summary

Cedar Park's Town Center Mixed Residential Area requires impact fees for both water and wastewater on every residential accessory dwelling unit, with at least a half water LUE and a half wastewater LUE billed per unit under section 11.02.035(E)(7)(b).

Utility assignments for residential accessory dwellings. Impact fees for both water and wastewater shall be paid and LUEs issued for each residential accessory dwelling unit as required by City Code. Not less than one-half (1/2) of a water LUE and one-half (1/2) of a wastewater LUE shall be required for each residential accessory dwelling. LUEs shall be counted and credited as they are allocated, whether in whole numbers or in fractions thereof.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4973212; v14 updated 2026-06-25).

Full Breakdown

Under section 11.02.035(E)(7)(b), a residential accessory dwelling built in the Town Center's Mixed Residential Area is treated as a separate utility connection, not a free add-on to the main house. Water and wastewater impact fees must be paid and living unit equivalents (LUEs) issued for the accessory unit as required by City Code, with a minimum of one-half of a water LUE and one-half of a wastewater LUE charged per accessory dwelling; fractional LUEs are counted and credited as allocated. The accessory unit's utilities must also be submetered from the principal dwelling, and the unit is capped at 600 square feet and one story below the height of the main house.

Violations & Fines

Building an accessory dwelling without paying the required water and wastewater impact fees and securing LUE allocation blocks utility connection and can hold up certificate of occupancy for the unit.

Frequently Asked Questions

Do these ADU impact fees apply everywhere in Cedar Park?
This LUE-fee rule governs accessory dwellings inside the Town Center's Mixed Residential Area under section 11.02.035(E)(7)(b); it is district-specific, not a citywide fee schedule.
Can a small accessory unit avoid the LUE fee?
No. The code sets a floor of at least one-half a water LUE and one-half a wastewater LUE per accessory dwelling, with fractional LUEs still counted and credited.

Sources & Official References

Other rules in Cedar Park

Parking Rules: Overnight ParkingSome RestrictionsADU RulesSome RestrictionsShed & Carport RulesSome RestrictionsParking Rules: RV & Boat ParkingSome RestrictionsADU Rental RestrictionsSignificant RestrictionsGarage ConversionsSignificant RestrictionsADU Owner OccupancySome RestrictionsNoise Ordinances: Vehicle NoiseHeavy RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: EV ChargingSome RestrictionsParking Rules: Driveway RulesSignificant Restrictions

All Cedar Park rules

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