Plano at a Glance
289K
Population
—
Parcels
—
Median Lot
—
Median Assessed
Building Code Requirements
These are the key dimensions and limits that govern what you can build in Plano. Every project — whether it's a new home, ADU, remodel, or addition — must comply with these requirements.
35'
Max Height
30'
Front Setback
8'
Side Setback
25'
Rear Setback
35%
Lot Coverage
2
Parking / Unit
Values shown are for standard single-family residential zones. Multi-family zones, commercial zones, and overlay districts have different requirements. View all Plano zone tables →
What You Can Build in Plano
Texas has no statewide housing density laws — development rules are set entirely by Plano's local code. Here's what governs residential construction in your area.
ADU Rules — Local Regulation
City CodeTexas has no statewide ADU law — rules are set entirely by local zoning code. ADU allowances vary by zoning district and may require conditional use permits, owner occupancy, or minimum lot sizes. Check your specific zone for ADU eligibility.
Texas Building Standards
IBC/IRCConstruction follows the International Building Code (IBC) and International Residential Code (IRC) as locally adopted. Texas does not have a mandatory statewide building code — each city adopts and enforces its own version with local amendments.
Frequently Asked Questions
Can I build an ADU in Plano, TX? +
ADU rules in Texas are set at the city level — there's no statewide ADU law. Plano may allow ADUs in some or all residential zones. Check Plano's local zoning code or use LotCheck to analyze your specific property.
Does Plano have zoning? +
Yes. Plano uses a traditional zoning code with residential districts that regulate lot size, setbacks, height, and density.
What building code does Plano use? +
Plano follows the International Building Code (IBC) and International Residential Code (IRC) as adopted locally. Texas has no mandatory statewide building code — cities adopt and enforce codes with local amendments.
What does an ADU cost to build in Collin County? +
ADU construction in Collin County, TX typically ranges from $80,000 to $300,000 depending on size, finishes, and site conditions. Texas's lower labor and material costs often make ADU construction more affordable than coastal states.