Deck Framing for a 12×12 Deck
Framing a 12×12 deck takes about 10 joists (16" OC), a doubled beam and ledger along 12', 3 posts, and 10 joist hangers. Change the span and spacing below.
Joists needed
10 joists
Joists
10 pieces12' span at 16" on-center
Beam & ledger
36 lin ftdoubled beam + ledger along 12'
Posts
3 posts6×6 PT, ~8' spacing
Joist hangers
10 each
Framing cost (est.)
$453lumber + hardware, excl. footings
Doing this for work? Estimate the whole job in minutes.
JRIQ turns plans and site photos into full material + labor estimates with AI — built by the team behind these calculators.
Try it free →
How this is calculated
Mulch volume = bed area × depth. We convert cubic feet to cubic yards for bulk delivery and to 2-cu-ft bags for the bagged option, so you can compare cost both ways.