Carson Dunlop has been a leader in the home inspection profession since 1978 – over 40 years! Alan Carson is a Past President of the American Society of Home Inspectors (ASHI) and a founding member of the Canadian Association of Home Inspectors (CAHI, now CAHPI).

Carson Dunlop is a home inspection company with 17 inspectors.
Carson Dunlop Weldon is their commercial inspection company with 6 inspectors.
Carson Dunlop is a registered Private Career College and has trained thousands of home inspectors across North America.

Carson Dunlop has created Horizon Inspection Software. Horizon is a web-based system that runs your entire business. Horizon lets you create brilliant reports easily, provide great service, run a smart business, market for growth — and spend less time doing it all!

Horizon connects seamlessly with Guardian Financial to allow you to process client payments quickly, easily and cost-effectively.

Through our interaction with companies like Horizon we have developed merchant accounts that are specific to the home inspection industry. Here at Guardian, we understand your business and we understand Horizon. When you choose us as your credit card processor, you can feel confident that our service will allow you complete compatibility, unbelievable simplicity and guaranteed affordability.

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Just 3 Simple Steps…..

  1. Call Guardian Financial. Our representatives have been working with the Home Inspections Industry for over 12 years. They will answer all your questions and send you the application documents you need.
  2. Fill out the simple 2 page document (takes less than 10 min.) and email or fax us back the documents. We will have your account set up and active within 2 business days.
  3. Link your new Guardian Financial merchant account to the Horizon Software by simply inserting your gateway account numbers into Horizon.

It really is as easy as 1,2,3.


Because our merchant account is completely compatible with Horizon you will have the ability to accept all card types right inside your Horizon software. In order to integrate fully, you must use a gateway service. is the recommended gateway. We handle all of the set up and billing so all you have to do is create a username and password.


The rates and fees associated with processing credit cards are primarily determined by the risk associated with running the transaction. Because we work with so many Home Inspectors, we have been able to create an account that gives the lowest rates to transactions that have historically been charged at a higher risk level. We try our very best to make sure our pricing is as simple as possible to understand.

*The monthly minimum is made up of your processing fees. Using the average home inspection transaction of $400, you would only need to do about 4 transactions a month to cover the minimum.

**We waive the PCI Compliance fee for the first 12 month of the account. We also have the lowest compliance fee in the industry compared to the average of over $149 annually.


  • Transactions

  • Discount Rate: 1.70%
  • Communication Fee: .20
  • American Express: 2.79%
  • Mid-Qual 0.4% Non-Qual 1.40%
  • Monthly

  • Account Maintenance: $5/ Mo
  • Secure Gateway: $5/ Mo
  • Monthly Minimum: $25*
  • PCI Compliance: $4.95/ Mo **
  • Set Up