Contact
Back Porch Latch Logbook is a reference publication and does not operate a public contact desk.
Corrections
Where a guide is factually wrong, it gets corrected. Accuracy is the only thing a reference site has to offer, and a page out of date on a code requirement is worse than no page at all.
Not a Contractor
The guides explain gate installation work; they do not provide it. It does not perform that work, quote for it, or arrange it on a reader's behalf.
Finding a Contractor
The usual checks are still the ones that matter. Put the same written specification to every firm, so the prices that come back are actually comparable.