The A105™ Standard Form of Agreement Between Owner and Contractor for a Small Project is intended to be used in conjunction with the A205™.
You can't typically purchase them separately - or at least not from the AIA.
The AIA has a set of documents, commonly referred to as the 'Small Projects Family Of Documents', that include the A105, the A205 and the B155.
According to the AIA this family of documents is to be used when a project is:
I guess apparently folks have 'mixed up the documents' (with not-so-good results) because the AIA actually has a strong warning about these forms:
These three AIA documents must not be used together with forms from other AIA document families without carefully comparing the documents - even though they may seem extremely similar to other AIA documents. At this time they no longer allow the purchase of the A105 without purchase of the A205 - and vice versa.
Do you use actual AIA forms or do you use a software program, or do you do both? Please let me know in the comments section below. :o)
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AIA Forms A105 Standard Form of Agreement Between Owner and Contractor for a Small Project