Looking for an addition contractor in Hammon, OK? Describe your project once and up to three addition contractors who work in Hammon and Roger Mills County get back to you with a quote. It's free and there is no obligation.
Hammon is home to about 463 people (2024 Census Bureau estimate), a shrinking community (−2.9% since 2020). With 632 people per sq mi, it is a semi-rural area. Growing families here often add space instead of moving.
Hammon at a glance
- Population (Census Bureau estimate, 2024)
- 463 (−2.9% since 2020)
- Rank in Oklahoma
- 311th of 591 cities and towns
- Land area
- 0.7 sq mi
- Population density
- 632 people per sq mi (semi-rural)
- Type
- Town (Hammon town)
- Main county
- Roger Mills County
What to check before hiring in Hammon
- Zoning: check Hammon's setbacks, lot coverage and height limits first.
- License and permit: in Oklahoma, 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
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ICC: International Code Council
Official information and guidance.
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NAHB
Official information and guidance.
Services available in Hammon
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Room addition
Ground-floor addition with foundation, framing, roof and finishes.
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Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in Hammon
How much does an addition cost in Hammon, OK?
It depends on size, foundation and finishes. Describe your project: contractors who serve Hammon 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 three independent addition contractors who serve Hammon 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.