| Quick facts | Answer |
|---|---|
| Cost range | $100-$350 in permits; panel upgrades run $3,000-$5,500 |
| Time | About 4 business days for permit approval; about 1 week total |
| Who's qualified | Ask for proof of insurance, relevant certifications (e.g., ASE for auto repair), and any license your state or city requires. |
Round Rock, TX: what's different here
Round Rock sits in Williamson County, about 19 miles and roughly 20 minutes north of Austin via I-35 North. The city handles residential electrical work through its standalone building permit program, which includes a torque letter requirement for upgrades and replacements. Permit fees vary by project type, from $50 for standalone electrical permits up to $500 on homeowner projects.
Do I need a permit for subpanel installation in Round Rock?
Yes. The City of Round Rock treats subpanel and electrical work as a standalone building permit, so DIY installation is generally not the path. The city lists a standalone electrical permit fee of $50 for electrical upgrades and replacements.
Why would my Round Rock home need a subpanel?
Subpanel installation is typically needed when a home needs more circuits, a new area is added, or the main panel lacks space or capacity for new loads. It is a common comparison point against a full 200-amp panel upgrade, which local estimates place at $3,000 to $5,500.
What code applies to electrical work in Round Rock?
All non-exempt electrical work must follow the latest adopted edition of the National Electrical Code under TDLR rules. Texas adopted the 2023 National Electrical Code effective September 1, 2023. Permits can vary by project type - the city shows fees from $50 to $500 on different pages.
What insurance should a Round Rock electrician carry?
Texas requires electrical contractors to maintain at least $300,000 per occurrence in business liability insurance, $600,000 aggregate, and $300,000 aggregate for products and completed operations. Ask the pro for proof of licence and insurance before work starts.
What to do next
- Confirm your project needs a Round Rock standalone electrical permit and note the $50 fee for upgrades and replacements.
- Prepare the torque letter the city requires uploaded with your electrical permit application.
- Verify the electrician is Texas-licensed and that their contractor employs a licensed Master Electrician via TDLR.
- Ask for proof of the required $300,000 per occurrence liability insurance and get the $100-$350 permit range itemized in your quote.
- Call (737) 367-2100 or email [email protected] for a free quote from a licensed, insured electrician.
Austin Volts is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.



