REMODARO PROJECT GUIDE

Redwood Deck To Composite Replacement Cost

Replacing redwood decking with composite depends on the condition and suitability of the existing structure as well as the chosen boards. Keep a surface-only conversion separate from a new-deck proposal.

Construction workers build a wooden deck outdoors
Project reference photograph · Image credit
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What should you budget?

Record the footprint, board direction, stairs and railing arrangement. Ask what can remain and how the installer will verify framing and connections after the redwood is removed. Identify disposal, fascia and transition details in the bid.

Retained-frame resurfacing and complete deck replacement are different scopes. The selected assessment does not invent a price for the railing package or unknown structural repairs.

Site assessment required

This scope needs a specific assessment before a numeric price can be useful.

Use the planner above to choose the work you actually want, enter your area or quantity and identify your project ZIP. The result shows a starting target alongside the wider planning range. For ZIPs we can resolve, the model uses a disclosed state-level regional price factor. The target is a budgeting aid, and actual contractor proposals depend on specifications and site conditions.

Keep the retained structure visible in the contract

Compare the same composite product and fastening method across quotes. Ask whether the contractor includes adjustments to supports, stair surfaces or rail posts. If the current deck has custom curves or built-ins, have those details drawn and priced instead of assuming the replacement follows the old layout without changes.

What to include in your first quote request

List the redwood features you want recreated, including steps, benches and edge treatments. Ask whether each feature is being rebuilt, adapted or removed so the composite proposal reflects the finished deck you expect.

What changes the cost of this project?

  • Foundation, framing and height
  • Railings, stairs and board pattern
  • Attached connections and site access

Sketch the footprint and mark doors, steps and furniture. For an existing deck, the condition of the support structure matters more than the appearance of its boards. A pergola requires an appropriate base and anchoring details. Keep foundation, railings, stairs and lighting visible as separate items when you compare quotes.

Build a scope that contractors can price

Make a short list of the work you want included and photograph the existing condition. Record approximate dimensions, access restrictions and anything you want to retain. Keep product names or inspiration images with the brief, but let the installer confirm final dimensions before anything is ordered. This gives every bidder the same starting information.

Extensive demolition, complex stairs, premium railings, a new pergola foundation and motorized roofs need separate pricing.

Ask for unknown work to be identified as an allowance or a unit-priced repair. Before accepting a change, request the reason, the price and the effect on the schedule in writing. Set a separate contingency based on the age and condition of the home and the uncertainty the contractor identifies, rather than treating every possible repair as already included.

Choose the contractor as carefully as the materials

Reviews can help you find candidates, but a star rating cannot verify the scope, credentials or availability for your home. Ask about projects similar to this one and check current licensing where required, insurance and recent references. Confirm who supervises the work and which trades are involved.

  • Have the footings, framing and ledger assessed before resurfacing.
  • Ask whether railings, stairs and permit drawings are included.
  • Confirm spacing and fasteners meet the chosen product instructions.

Compare written proposals using the same checklist

Ask each contractorWhat to look for
Scope and materialsNamed products, quantities and exclusions
Permits and inspectionsWho obtains approvals and schedules checks
TimelineStart conditions, delivery dependencies and completion stages
Payment and changesWritten milestones and approval for extra work
Warranty and handoverWorkmanship terms, product documents and contact details

Before the first visit, ask whether the on-site quote is free and whether design work or investigative work has a separate fee. Remodaro’s optional matching request is free for homeowners. After you submit your project and phone number, we can review availability and look for up to three suitable contractors. A match or visit needs confirmation before it is arranged.

Common planning questions

Is replacing redwood with composite priced only by deck area?

Area is useful for the surface, but stairs, railings, demolition and support work need their own scope. Use a resurfacing assessment and compare a full rebuild if the structure cannot be retained.

Can I start with a smaller project?

Yes. The decks & pergolas planner includes focused work as well as larger projects. Compare the intended scope with another option before committing. Inspection-dependent work gets a project brief so a broad remodel price is not mistaken for a repair quote.

How does my ZIP affect the estimate?

We look up the city and state associated with the ZIP. Where a regional factor is available, we apply the documented state price index as a planning proxy. It measures general price differences, not actual contractor bids in your neighborhood. Scope, access and the condition of your home still need an on-site evaluation.

Do I have to hire a contractor through Remodaro?

No. You can keep the estimate and checklist. The optional phone form requests help reviewing local contractor availability, and there is no obligation to accept a proposal.

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Homeowner reference — Trex guidance on assessing a deck before resurfacing. General background on retaining suitable existing framing. The actual decking and railing systems require their own specifications; Remodaro is not affiliated with the manufacturer.