Proudly Serving Rochester and Southeastern Minnesota

My name is John Mennenga. I am an InterNACHI Certified Professional Inspector® - performing inspections since 2004. I specialize in delighting my clients by providing superior service, and I derive great satisfaction knowing that I have helped my clients make wise home-buying/home-selling decisions. 

What sets me apart as a home inspector is my extensive training, education and experience coupled with great customer service. To sum up the way I work with my clients is, "Always informative and educational - never alarming."


Offering Radon Test with an inspection for ONLY $100* - Stand alone Radon Test is $150*  We use state-of-the-art Continuous Radon Monitoring (CRM) machines which produce a detailed, easy to read and understand 3 page PDF report. The "Meaning of Results" produced by Olmsted County, is also included. 

*Nominal trip charge outside of Olmsted County may apply

Services Offered:  

  • Buyer and Seller Inspections

  • Pre-Listing Consultations

  • Radon Testing

  • 11th Month New Home Construction Inspections

  • Nationally Certified Radon Measurement Provider

  • OverSeeIt™ Inspector - Offering project oversight on all phases of construction

  • Authorized Supra Electronic Key Holder

  • Plan Reviews

  • Independent Building Code Inspections

  • Federally Certified HUD/FHA 203K Building Consultant

  • Other specialty consultations and inspection services

Inspections and consultations are conducted every day, including early morning, evening, all day Saturday and Sunday afternoon for your convenience!

Buying or selling a house is a big decision. Good customer service starts with being there for my clients who need my services, when it fits their schedule!

“Even though we have bought and sold many homes in the past, John gave us an in depth education on the home we purchased. We were impressed with his professionalism and thoroughness, and the detailed report was easy to read and useful. The summary became our punch list after we moved in.”

-  Suzanne & Tom F., Rochester

I have owned my business for 14 years and am proud to be an active member of many organizations. I am a member of the Minnesota Association of Home Inspectors (MAHI), Southeast Minnesota Code Officials (SEMCO), Business Network International (BNI) - Zumbro Valley Chapter, Rochester Area Chamber of Commerce, Christian Business Leaders (CBL) and Southeast Minnesota Area Realtors (SEMAR) affiliate member.

Additionally, I maintain a Minnesota Building Official Certification (#2501) and am a member in good standing with the International Association of Certified Home Inspectors (InterNACHI).  I am a Nationally Certified Radon Measurement Provider, registered with the National Radon Proficiency Program (NRPP), ID #109075 RT.  I earned an associate’s degree in Building Inspection Technology, a Certificate in Building Inspection Technology Core from InverHills Community College and a Housing Inspection Certificate from North Hennepin Community College.

Conspectus Home Inspection Services, LLC, is a Home Inspection business in Rochester, Minnesota.


Call or text 507-696-7330 with any questions or to schedule an inspection.