Pier Block Spacing For Deck. Blocks will allow minimal surface prep or digging as opposed to concrete piers which will usually require excavation of large amounts of dirt, more labor and associated costs. Deck joist spacing & blocking tips. Estimated based on a 12' x 12' deck;

Deck Footing Spacing And Layout Deck Footings Deck Building Plans Floating Deck
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(on center) for standard straight composite decking installation. The blocks should be spaced to make a 7' x 19' rectangle, leaving about 6 inches from each block for deck boards to add another 8' x 20' rectangle. We designed this deck to be a freestanding deck, we did this because in the county he lives in a deck attached to the building becomes taxable.

The old deck was extended once already but it was a part of a home addition (second pic) so the city wants the pour concrete i need to start prepping the foundation & footing now.

To avoid this we decided a floating deck would be the best option. The blocks can be buried but typically aren't. I am extending the backyard deck. I plan to use this concrete pier block with metal bracket from home depot below They must have a sufficient bearing area (the area of the block. Unlike decks and patios that are attached to your house, a floating deck can decide how large you would like to make your floating deck. If your deck is 6 feet or less with proper post to beam and joist bracing, it is a perfect candidate for a floating surface deck blocks. Limiting joist movement also helps.