ADU Impact Fees: Frisco vs Plano
How do adu impact fees rules compare between Frisco, TX and Plano, TX?
Frisco and Plano 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 →Plano, TX
Collin County
Plano 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 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 Plano rules →Key Facts Comparison
| Fact | Frisco | Plano |
|---|---|---|
| Authority | TX LGC Ch. 395 Impact Fees | TX LGC Ch. 395 Impact Fees |
| Water Impact | Per Frisco adopted rate schedule | ~$1,500-3,500 per new SFE |
| Wastewater Impact | Per Frisco adopted rate schedule | ~$2,000-4,500 per new SFE |
| 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.
Plano FAQ
Are ADU impact fees waived in Plano?
No. Texas has no statewide ADU impact-fee waiver. Plano 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.
What does an accessory unit cost in Plano fees?
Expect $1,500-3,500 in building, plan-check, and trade permit fees for a small unit sharing the main house's utilities. Separate water/sewer connections add $3,500-8,000 in Chapter 395 impact fees plus roadway impact fees if applicable.
Will my property taxes go up?
Yes. The Collin Central Appraisal District will reassess the property after the certificate of occupancy. Plano property taxes are around 0.42% city + Collin County + Plano ISD, totaling roughly 2.0-2.4% of appraised value.
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