Looking for an addition contractor in McKinney, TX? Describe your project once and up to five addition contractors who work in McKinney and Collin County get back to you with a quote. It's free and there is no obligation.
McKinney is home to about 227,526 people (2024 Census Bureau estimate), a growing community (+16.5% since 2020). With 3,328 people per sq mi, it is a suburban area. Growing families here often add space instead of moving.
McKinney at a glance
- Population (Census Bureau estimate, 2024)
- 227,526 (+16.5% since 2020)
- Rank in Texas
- 15th of 1,224 cities and towns
- Land area
- 68 sq mi
- Population density
- 3,328 people per sq mi (suburban)
- Type
- City (McKinney city)
- Main county
- Collin County
What to check before hiring in McKinney
- Zoning: check McKinney's setbacks, lot coverage and height limits first.
- License and permit: in Texas, additions are built by licensed contractors under a permit.
- Structure: second stories need an engineer to check the existing house.
- Price drivers: size, foundation, roof tie-in, plumbing and finishes.
Useful official resources
-
ICC: International Code Council
Official information and guidance.
-
NAHB
Official information and guidance.
Services available in McKinney
-
Room addition
Ground-floor addition with foundation, framing, roof and finishes.
-
Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in McKinney
How much does an addition cost in McKinney, TX?
It depends on size, foundation and finishes. Describe your project: contractors who serve McKinney reply with a quote.
How long does it take?
Often a few months, plus design and permits.
Does an addition raise property taxes?
Usually, since it increases the assessed value.
Which addition contractors will contact me?
Up to five independent addition contractors who serve McKinney and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.