Home › Cost calculators › Deck Replacement Cost Calculator
Planning estimate · Sparks, NVDeck replacement cost calculator for Sparks
Replacing a deck is really four different projects wearing one name, and they are a long way apart on price. What separates them is how much of the old structure you keep — a question best answered with a screwdriver rather than a guess.
What is behind the number
What moves the cost of a deck replacement
At one end, you take off the boards and the railing and lay a new surface on the existing frame. That is the cheapest thing on this page by a wide margin and it is the right answer surprisingly often. At the other end, everything comes out including the footings, and you get a genuinely new deck with a new lifespan on the same patch of ground.
The decision between them is not really about budget. It is about how much life the existing structure has left, and specifically about two things: the ledger connection, and whether the footings would satisfy the current requirement. Washoe County lists the frost line at 24 inches, and older decks were sometimes set on precast blocks sitting on the surface. Those do not become compliant by having a new deck built on them.
A replacement is also the only moment when changing anything is cheap. Lighting cable, stair position, a shade structure, skirting, the railing system — all easy while the deck is apart, all expensive afterwards. If something is on the list at all, it belongs in this scope.
How much of the old deck stays
Boards and railing only, or everything down to and including the footings. The gap between those two scopes is most of the range on this page, and the honest answer depends entirely on the condition of the frame.
Whether the existing footings qualify
Washoe County lists frost line depth at 24 inches. Older decks were sometimes set on shallow footings or surface blocks. Exposing one or two before the drawing is final is a small cost that decides a large part of the estimate.
Whether the frame was sized for current snow load
A deck framed twenty years ago in the foothills may be lighter than the current requirement. That is not a criticism of the original builder — the numbers and the code have both moved. It does mean the replacement will not simply match what comes out.
What pushes it higher
- Taking everything out including the footings
- Changing the footprint, the shape, or splitting into levels
- Moving to composite or PVC from wood
- Rebuilding at an elevation where the snow load passes 70 psf
- Discovering the old footings are too shallow to reuse
- Adding lighting, skirting or a shade structure while it is apart
What brings it down
- Keeping a sound frame and replacing only boards and railing
- Staying on the same footprint, which often keeps the footings usable
- Pressure-treated pine rather than composite
- Confirming the footings are sound rather than pricing an allowance
- Doing everything in one visit rather than phasing it
- A simple rectangle rather than a reshape
Turn the estimate into a real number
Send a couple of photos of the space, rough dimensions, and how high off the ground it needs to sit. You will get a straight answer about what the ground, the span and the budget will allow before anyone talks about boards.
What people ask about this
What does it cost to replace a deck rather than repair it?
It depends almost entirely on how much of the old structure stays. Re-decking a sound frame with new boards and railing is the cheapest scope. A complete rebuild including footings is typically 50 to 70 per cent more than that for the same size and material. Both are priced separately in the calculator so you can see the gap for your particular deck.
Can I keep the existing frame?
Only if it is genuinely sound, and that means checking rather than assuming. The two things to look at are the ledger, where water gets behind failed flashing and rots the rim joist from the inside, and the base of the posts. If both are good and the deck is under about twenty years old, re-decking is usually excellent value. If either is questionable, you would be putting a twenty-five year surface on a structure that may have five years left.
Will old footings pass?
Not always. Washoe County lists frost line depth at 24 inches, and older decks were sometimes built on footings shallower than that, or on precast blocks sitting on the surface. Those do not become compliant by being under a new deck. Exposing one or two before the design is final is cheap and decides a meaningful part of the estimate, which is why the 'not sure' answer carries an allowance rather than an assumption.
Is a replacement a good time to change the size or shape?
It is the only cheap time. Extending beyond the old footprint means new footings and frame, but doing it during a rebuild costs far less than adding to a finished deck later. The same is true of moving stairs, adding lighting cable, or fitting a shade structure whose posts need footings of their own.
Do I need a new permit to replace a deck?
Generally yes — a replacement is new construction even on an old footprint, and it is inspected. The calculator includes a permit line estimated from the published City of Sparks fee schedule. If the new deck is bigger, higher or in a different position from the old one, expect more scrutiny of the drawing rather than less.
Should I switch to composite while I am replacing it?
It is the most common reason people replace rather than repair. The thing to confirm first is joist spacing: most composite wants 16 inches on centre for a straight lay and 12 for a diagonal, and older frames were sometimes built at 24. If you are keeping the frame, that spacing has to be closed before any board goes down.