You better hope the HOA does not get wind of this concrete pour . It's easy to say " It's my property and I'll do what I want ." until they drag you into Court and produce the document that you signed at closing that says you will abide by all HOA rules . They will get a judgement against you and put a lien on your property . Something as simple as a fence , a sidewalk or even a paint color can cost you big time . I wish you well .