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As we come into the winter season, we appreciate your understanding that we cannot control the weather. We will do our absolute best in regards to communicating timelines while also valuing our safety and the safety of our equipment!

We will be closed Thursday 11/9 for a family emergency and working limited hours on Friday 10/10. Thank you for your understanding..

When our mini surveyor in training is off for the summer, he becomes both field helper, and drafter helper!


2 months ago
We were in a time crunch to get a property survey so we could meet our closing date. They were so cooperative and did excellent work. Could not be happier!
- Nancy H
10 months ago
Family owned, HONEST, fair and reputable. You won't find better! They did our property lines and did an amazing job! Highly, HIGHLY recommend!
- Keri L
a year ago
Onwiler Contracting is the BEST in the business! They are fast, friendly, and extremely professional. I highly recommend for anyone who needs a survey!
- Rachelle B

About us

As a small business, our goal is to provide the residential homeowner the best service possible with a quick turnaround. We pride ourselves on communication and timeliness. Serving Jackson, Cass, Johnson, Clay and Platte Counties in Missouri.

We offer: Boundary Survey's, Topographic Survey's, Plot Plan's, Large Lot Splits, Property Line Staking, and more. 

Our company consists of David (Field work and Communication Specialist, with over 20 years of field experience) and Caitlin (Office and Drafter & Professional Land Surveyor with over 15 years of experience both field and office). With the occasional help from Tuck, our mini-surveyor-in-training. 

Weather may influence delivery times (We do not operate our equipment in heavy rain or lightning as it poses a risk of damaging equipment.)
Payment: Cash or Check only. We reserve the right to hold the survey until payment has cleared the business account. delay of funds clearing may delay the issuance of survey.

Contact Us


Call now
  • (816) 308-1223
  • (913) 269-6550


Get directions
South Hamilton Road
Greenwood, MO 64034

Business Hours

Mon:7:30 AM – 4:30 PM
Tue:7:30 AM – 4:30 PM
Wed:7:30 AM – 4:30 PM
Thu:7:30 AM – 4:30 PM
Fri:9:00 AM – 12:00 PM
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