ADU Impact Fees: Frisco vs McKinney
How do adu impact fees rules compare between Frisco, TX and McKinney, TX?
Frisco and McKinney have similar restriction levels.
Frisco, TX
Collin County
Frisco charges standard impact and utility fees on new dwelling units under Texas Local Government Code Chapter 395 authority, including water and wastewater impact fees and roadway impact fees in service areas. Texas has no statewide ADU impact-fee waiver comparable to California Gov. Code §65852.2(f). Costs depend on whether the accessory unit requires a new water/sewer connection.
View full Frisco rules →McKinney, TX
Collin County
McKinney charges standard impact and utility fees on new dwelling units under Texas Local Government Code Chapter 395 authority, including water/wastewater impact fees and roadway impact fees in adopted service areas. There is no Texas statewide ADU impact-fee waiver comparable to California Gov. Code §65852.2(f). Costs depend on whether the unit requires a new utility connection.
View full McKinney rules →Key Facts Comparison
| Fact | Frisco | McKinney |
|---|---|---|
| Authority | TX LGC Ch. 395 Impact Fees | TX LGC Ch. 395 Impact Fees |
| Water Impact | Per Frisco adopted rate schedule | Per adopted CIP - SFE basis |
| Wastewater Impact | Per Frisco adopted rate schedule | Per adopted CIP - SFE basis |
| Roadway Impact | Applies in service areas | Applies in service areas |
| Share Existing Tap | Avoids most impact fees | Avoids most impact fees |
| Appraisal Districts | Collin CAD or Denton CAD | - |
Highlighted rows indicate differences between cities.
Frisco FAQ
Are ADU impact fees waived in Frisco?
No. Texas has no statewide ADU impact-fee waiver. Frisco charges standard fees under Texas Local Government Code Chapter 395. Accessory units sharing the principal dwelling's existing water/sewer tap can avoid most impact fees, but building, plan review, and trade permit fees still apply.
How are Frisco impact fees set?
Under Texas Local Government Code Ch. 395, Frisco must adopt Land Use Assumptions, a Capital Improvements Plan, and a rate study supporting the fees, and update them at least every five years following a Capital Improvements Advisory Committee review and public hearing under §395.0575. The Collin Central Appraisal District (or Denton CAD) reassesses property after certificate of occupancy.
McKinney FAQ
Are ADU impact fees waived in McKinney?
No. Texas has no statewide ADU impact-fee waiver. McKinney charges standard fees under Texas Local Government Code Chapter 395. However, accessory units sharing the principal dwelling's existing water/sewer tap can avoid most impact fees — building, plan-check, and trade permit fees still apply.
Will my property taxes go up after building an accessory unit?
Yes. The Collin Central Appraisal District will reassess the property after the certificate of occupancy. McKinney property taxes combine City of McKinney, Collin County, Collin College, and McKinney ISD levies, typically totaling around 2.0-2.4% of appraised value.
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