How Much Does it Cost to Replace a Deck?

A well-built deck extends your living space and provides a comfortable place to relax, entertain, or enjoy the outdoors. But over time, exposure to sun, rain, and daily use can lead to warped boards, loose railings, or deeper structural issues. When repairs no longer make sense, a full replacement often becomes the better investment.

Deck replacement projects typically range from $5,000 to $20,000, depending on your choice of materials, size, and design complexity. For many homeowners, it’s a chance to rethink layout, choose more durable materials, and ensure compliance with updated safety codes. Understanding these costs up front helps you plan wisely and avoid unnecessary surprises as your project moves forward.

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Average Deck Replacement Cost

Deck replacement costs average $30 to $55 per square foot installed, higher than new deck builds due to demolition and disposal.

Sample Project Costs

• 200 sq ft deck: $6,000 – $11,000
• 400 sq ft deck: $12,000 – $22,000
• 600 sq ft deck: $18,000 – $33,000

A 12’x12′ deck typically costs $3,600 – $7,200, while a 20’x20′ deck can run $10,000 – $20,000 with complete structural framing and railings.

Cost Breakdown: Materials vs. Labor

• Labor: $11 – $25 per sq ft
• Materials: 30% – 50% of total cost
• Demolition: $6 – $15 per sq ft
• Permit fees: $100 – $500 depending on location

Demolition includes removal of decking, structural beams, and supports. Complex designs, multi-levels, or tight access areas can increase costs by 15%–25%.

Cost by Decking Material

Choosing the right material influences long-term value, appearance, and maintenance needs.

Material Type	Cost (per sq ft)	Pros	Cons
Pressure-Treated Wood	$3 – $6	Affordable, rot-resistant	Requires sealing or staining every 2–3 years
Composite Decking	$5 – $13	Low maintenance, weather-resistant	Higher upfront costTop brands like Trex offer fade-resistant planks with 25-year warranties
Ipe (Hardwood)	$10 – $15	Extremely durable, premium look	Difficult to cut and fasten, higher labor costs
Cedar (Hardwood)	$4 – $8	Naturally resistant to rot and insects	Requires regular maintenance
Redwood (Hardwood)	$7 – $12	Attractive grain, decay-resistant	Limited availability, needs sealing
Mahogany (Hardwood)	$8 – $11	Strong, elegant appearance	Costly, requires careful installation
PVC/Plastic Decking	$35 – $60	Completely water-resistant, no maintenance	Highest material costBest for humid climates

Additional Cost Factors

Beyond materials and base labor, several hidden or optional elements can significantly influence your total deck replacement cost. Factoring these in upfront helps avoid surprises and ensures accurate budgeting.

Railings and Stairs

Deck railings and stairs often account for a noticeable portion of your final bill. Basic wood railings typically cost between $20 and $50 per linear foot, while stainless steel or cable railing systems can range from $50 to $250 per foot depending on the design. Stairs add further complexity—especially for multi-level or elevated decks—which can increase framing and labor requirements.

Foundation and Posts

Decks must rest on secure footings that meet local building codes, particularly with frost line depth requirements. If your existing posts are damaged or not up to code, replacing them could add $25 to $300 per post depending on soil conditions and structural needs. Complex foundations or uneven terrain may require additional excavation and reinforced footers, driving up labor time and cost.

Permits and Inspections

Most municipalities require permits for deck construction or replacement. Permit fees typically range from $100 to $500, depending on your location and the size of the project. Additional inspection fees may apply if structural changes or electrical work is involved. For more detailed estimates, consult HomeAdvisor’s permit cost guide.

DIY vs. Hiring a Pro

Replacing a deck yourself can be cost-effective, but only if you’re fully equipped and prepared for the scope.

DIY Projects

Homeowners with solid carpentry skills and experience navigating local building codes can save $3,000 to $8,000 in labor costs by handling the project themselves. However, this route typically requires:

• Strong understanding of deck framing and safety codes
• Access to specialty tools and enough workspace
• Time commitment of 2 to 4 weeks depending on complexity
• Ability to pass required inspections

Mistakes in structural layout or fastener placement can void warranties and affect resale value, so DIY should only be considered with confidence and preparation.

Professional Installation

Hiring licensed contractors offers key advantages:

• Ensures code compliance and proper permitting
• Warranties for workmanship and structural integrity
• Faster project completion, often in 5–10 days
• Access to bulk discounts on materials
• Peace of mind knowing the deck is built to last

While it may cost more upfront, professional work typically pays off in longevity and fewer repair issues over time.

How to Save Money on Deck Replacement

A few strategic choices can help reduce total costs without sacrificing quality.

Plan Off-Season

Contractors tend to offer lower rates during slower months like late fall or winter, where demand dips. Booking your project during this window can yield 10–20% savings.

Reuse Support Structures

If your existing frame or posts are still in good condition, retaining them could save $2,000 to $5,000. Always have a professional inspect for rot, code compliance, and load-bearing safety before reusing any part of the old structure.

Smart Material Choices

Choose materials that balance cost and durability:

• Use pressure-treated wood for framing
• Opt for builder-grade or pre-stained lumber
• Avoid exotic hardwoods unless aesthetics are a top priority

These decisions can lower both materials and maintenance costs over time.

Get Multiple Quotes

Always request 3 to 5 estimates from licensed professionals using the same specifications. Online platforms like MyHomePros.com makes it easy to compare local contractors. Reviewing reviews, warranties, and availability helps you find the right fit for your budget and timeline.

Return on Investment

Replacing a deck can offer solid financial value when it’s time to sell your home. On average, homeowners recover about 68% to 83% of the project cost, depending on the materials used and local market conditions.

Wood Deck ROI

Wood decks often provide a higher return, with some projects recouping up to 50.2% of the investment. This is more likely in areas where outdoor space is a selling point and where wood decks are common.

Composite Deck ROI

Composite decks tend to return around 39.8% of their cost. Although the resale value is typically lower than wood, the material’s durability and lower maintenance can appeal to buyers who want long-term convenience.

Regional Considerations

In warmer parts of the country where decks see more use throughout the year, the value added by a well-built outdoor space is often more noticeable. Regional demand and climate both influence how much of your investment you’re likely to recover during resale.

FAQs

How long does a deck replacement take?

Most standard deck replacements take about 5 to 7 days to complete, assuming good weather and easy site access. Larger or elevated decks with custom features can extend the timeline to 2 to 4 weeks. If your project includes demolition of the existing structure, plan for an additional day or two.

Can I expand my deck during replacement?

Yes, many homeowners take the opportunity to increase deck size or change its layout when replacing an old structure. Just keep in mind that expansions may require updated permits and local code compliance, which can add to your timeline and cost.

What’s the lifespan of decking materials?

The lifespan depends largely on the material. Pressure-treated wood decks typically last 10 to 25 years with regular maintenance. Composite decks offer longer durability—25 to 50 years—with minimal upkeep, making them a worthwhile investment for many homeowners.

Conclusion

A new deck can change how you enjoy your home, offering more space to relax, entertain, and spend time outdoors. Replacement typically costs between $30 and $55 per square foot, depending on materials and design complexity. The key is choosing a layout and material that suits your lifestyle, maintenance preferences, and local climate.

Whether you prefer the affordability of pressure-treated wood or the durability of composite decking, a well-built deck provides lasting value and enhances your home’s overall look and function.

Before you begin, gather quotes from several licensed contractors. Make sure each estimate clearly breaks down demolition, materials, labor, and permit fees. Comparing your options up front helps you avoid surprises and ensures your deck is built to last.