How Much Does Deck Replacement Cost?
How much does deck replacement cost? The honest answer depends on three things: the size of your deck, the material you choose for the new one, and the condition of the framing underneath. Any page that hands you a single number without knowing those three things is guessing. This guide walks through what actually drives the price for Ontario, CA homeowners, so you can size up your own project before anyone sets foot on your property. By the end, you will know exactly what to have ready to get a real, accurate number instead of an internet estimate.
What Drives the Cost of Deck Replacement
Every deck replacement in the Inland Empire comes down to the same handful of price factors. Here is each one, which direction it pushes the price, and how to tell where your deck lands.
Deck Size and Layout
Size is the biggest lever. More square footage means more decking boards, more framing lumber, more footings, and more labor hours. A popular search is "how much does a 14×20 deck cost," and the honest answer is that a 280 square foot deck sits in the mid-size range. It costs more than a small landing but far less than a wraparound or multi-level deck.
Layout matters too. A simple rectangle is the cheapest shape to build. Angles, curves, wraparounds, and multi-level designs add cuts, waste, and labor. Measure your existing deck, length times width, and note whether it is one simple level or something more complex. That single number gets you halfway to a useful estimate.
Decking Material: Wood vs. Composite
Material choice changes the price more than almost anything after size. Pressure-treated wood costs the least upfront. Premium woods like redwood or cedar cost more. Composite decking, including brand names like Trex, costs the most per square foot at installation.
Here is the trade-off, and it matters in Southern California. Composite handles the Inland Empire sun and dry heat without staining, sealing, or splintering. Wood costs less on day one but needs regular staining and sealing to survive our summers. If you search "trex decking cost per square foot," know that composite pricing varies by product line, so the fastest path to a real number is a quote on your actual square footage, not a generic chart.
Condition of the Framing and Footings
This is the factor homeowners see least and pay for most. If your existing joists, beams, posts, and concrete footings are still sound, a builder may replace only the decking and railing on top of the old structure. That is closer to deck resurfacing, and it costs less. If the framing is rotted, undersized, or not built to current code, the whole structure comes out and gets rebuilt from the footings up. That is a full replacement, and it costs more.
You can do a rough check yourself. Crawl under the deck and probe the joists and posts with a screwdriver. Soft, spongy wood, rusted connectors, or posts sitting directly on dirt all point toward full replacement.
Railings, Stairs, and Height
An elevated deck costs more than a ground-level one. Height means longer posts, deeper footings, code-required railings, and stairs. Every stair run and every foot of deck railing adds material and labor. A low platform deck with no railing is the cheapest version of any given size. A second-story deck with stairs and full railing is the most expensive. Count your stairs and measure your railing length before you call for quotes.
Permits and Code Requirements in Ontario, CA
Most deck replacements in San Bernardino County and Riverside County need a building permit, especially attached decks and anything elevated. Permits add fees and sometimes engineering requirements, but skipping them creates problems when you sell the house. A local deck builder who handles deck permits and planning as part of the job saves you the trips to the city counter. Ask every bidder whether permit costs are included in their price, because a quote that leaves them out looks cheaper than it is.
Demolition and Haul-Away
The old deck has to come down and go somewhere. Tear-out labor and disposal fees are part of any replacement quote. Bigger decks, elevated structures, and decks with concrete footings that need removal all push demolition costs up. If your quote does not mention demolition and haul-away, ask. It should be a line item, not a surprise.
Cost Factor Table
| Factor | Pushes the price down when… | Pushes it up when… |
|---|---|---|
| Deck size | The footprint is small and the shape is a simple rectangle | The deck is large, multi-level, or has angles and curves |
| Decking material | You choose pressure-treated wood | You choose composite decking or premium wood |
| Framing condition | Existing joists, posts, and footings are sound and code-compliant | Framing is rotted or undersized and needs a full rebuild |
| Height and access | The deck sits at ground level with easy backyard access | The deck is elevated, needs stairs, or has tight access |
| Railings and stairs | Little or no railing is required | Long railing runs, multiple stairs, or upgraded railing materials |
| Permits | The project is simple and permit fees are minimal | Engineering or plan review is required for the design |
| Demolition | The old deck is small and easy to remove | The old structure is large, elevated, or has footings to dig out |
How to Get an Accurate Deck Replacement Estimate
Online deck cost calculators, including any Trex decking cost calculator, give you a ballpark based on averages that do not know your backyard. They are a starting point, not a price. Here is how to get a number you can actually budget against.
Have this information ready before you call:
- Measurements. Length and width of the current deck, plus its height off the ground.
- Material preference. Wood or composite, even if you are undecided. Ask for both prices.
- Condition notes. Anything you noticed under the deck: soft wood, leaning posts, rusted hardware.
- Photos. A few shots of the deck from above and below help a builder scope the job before the site visit.
A good quote for deck replacement should include, in writing: demolition and haul-away, framing scope (reuse or rebuild), decking material by name and product line, railing type and length, stairs, footings, permit handling, and a payment schedule. If a quote is one number on a single line, you cannot compare it to anything, and you cannot hold anyone to it.
Estimates differ between providers for real reasons. One builder may plan to reuse your framing while another prices a full rebuild. One includes permits, another does not. Additionally, one prices entry-level composite, another prices a premium line. When two quotes are far apart, the difference is usually in the scope, not the markup. Ask each bidder what their number includes and compare line by line. We offer a free quote for Ontario, CA homeowners, and we put the scope in writing so you can make that comparison.
Ways to Keep the Cost Down
You do not need coupons to lower the price. You need smart scope decisions.
- Keep sound framing. If an inspection shows your joists and footings are still solid, deck resurfacing instead of full replacement saves the entire framing and demolition portion of the job. Ask every bidder to evaluate this before pricing a full tear-out.
- Simplify the shape. A rectangle costs less than the same square footage in an L-shape or a multi-level design. If budget is tight, put the money into material quality, not corners.
- Match material to how long you will stay. Composite costs more upfront but skips years of staining and sealing. If you plan to move within a few years, wood may pencil out better. If this is your long-term home, composite usually wins on total cost over time.
- Get two or three written quotes. Not to grind the lowest bidder, but to see which scope items vary. A missing line item on the cheap quote often shows up later as a change order.
- Maintain what you build. For a wood deck, regular staining and sealing is the difference between replacing boards in a decade and replacing the whole structure. In the Inland Empire sun, that maintenance schedule matters more than in milder climates.
Cost Questions People Ask
How much is the labor cost to build a deck per square foot?
Labor is usually a large share of the total, and it scales with complexity rather than just size. Elevated decks, stairs, railing runs, and difficult access all raise the labor hours per square foot. Because labor rates and site conditions vary across Ontario, Rancho Cucamonga, Fontana, and the rest of the Inland Empire, the only labor number worth budgeting against is one from a written quote on your specific deck.
What does deck board replacement cost compared to full replacement?
Replacing individual boards is the cheapest fix and makes sense when a few boards are cracked or warped but the structure is sound. Resurfacing, replacing all the decking and railing over existing framing, sits in the middle. Full deck replacement, framing and footings included, costs the most. A builder should tell you which tier your deck actually needs after looking underneath it, not just at the surface.
Is composite decking worth the higher upfront price?
In Southern California heat, often yes. Composite does not need staining or sealing, does not splinter, and holds its color under heavy sun exposure. Wood costs less at installation but carries ongoing maintenance costs and a shorter lifespan if that maintenance slips. Run both numbers in your quotes and weigh them against how long you plan to stay in the house.
Do I need a permit to replace my deck in Ontario, CA?
Most replacements do, especially attached or elevated decks. San Bernardino County and the City of Ontario have their own requirements, and an experienced local deck builder will handle the permits and planning as part of the project. Confirm that permit fees and handling are included in any quote you compare.
The Bottom Line
The cost of replacing a deck comes down to size, material, and what the framing looks like underneath, and nobody can price those from a search results page. Measure your deck, note its condition, and gather two or three written quotes with the scope spelled out line by line. If you are in Ontario, CA or anywhere in the Inland Empire, we are happy to be one of those quotes, free and in writing.
If you need custom deck design, Inland Empire Decks can help.
Prefer to talk it through? Call (909) 298-8578 — a quick call is usually the fastest way to get a straight answer for your situation.