Deck ROI Calculator

Two reasons: (1) composite decks degrade slower than PT, so a 5-year-old composite still looks new while a 5-year-old PT often needs re-staining; (2) buyer perception — buyers willing to pay premium for a composite deck because they know they won't need to maintain it. The base recoup percentages reflect both effects: PT 50.2%, composite 52.0%, PVC 56.5%.

Yes — meaningfully. On a $20K project: PT recoups ~$10,000 (50%), composite recoups ~$10,400 (52%), PVC recoups ~$11,300 (56.5%). But the price points differ — a $20K PT deck is a larger / fancier PT install than a $20K PVC deck. The honest answer: pick the material that fits your usage (barefoot? composite or PVC; budget? PT) and accept the corresponding ROI band. Don't pick PVC purely for ROI — the upgrade cost rarely pays back in resale alone.

Three factors: (1) Year-round outdoor living — California / Washington / Oregon buyers value decks more because they USE them more months per year; (2) higher home values amplify dollar-recoup (CA median ~$770K vs PA $245K); (3) regional design trends — West Coast modern aesthetic prizes outdoor entertaining space. Northeast (NY/MA/NJ) still pulls solid ROI (~1.05-1.10×) because high home values offset shorter outdoor season.

An annual industry study by Remodeling Magazine that tracks 22 common home improvement projects across 150 US markets — average construction cost, average resale value added, and recoup percentage. It's the canonical source for home-improvement ROI. The 2024 report showed wood deck addition at 50.2% national recoup and composite deck addition at 47.6% (CvV slightly underrates composite vs DeckMath's adjusted baseline because CvV uses contractor-installed pricing which compresses the per-LF cost-vs-value differential).

Yes — each year of ownership shaves percentage points off the recoup. PT decays 1.8%/yr (so a 10-year-old PT deck recoups roughly base − 18% = ~32%). Composite decays 1.0%/yr (10-yr composite ~42%). PVC decays slowest at 0.7%/yr. The decay reflects normal wear, fading, and the buyer's perception that the deck is closer to end-of-life. A 5-year-old deck recoups significantly more than a 15-year-old deck of the same material.

Typical deck investment is 4-8% of home value. Above 10% you're in diminishing-returns territory — a $50K deck on a $300K home is over-built; buyers won't pay proportional premium for over-built outdoor amenities. The calculator flags this. If your asPctOfHomeValue is over 10%, consider whether the deck size + material match the home's price tier — a luxury deck on a starter home rarely earns its full ROI.

A mid-size composite or PVC deck (300-400 sqft) on a home in California, Washington, or Colorado scores the highest ROI both as a percentage and in absolute dollars. PVC + tropical hardwood pull the highest recoup pcts (56.5% / 58.0% base) but the materials premium often eats the ROI advantage. The sweet spot: capped composite (Trex Transcend, TimberTech Reserve, MoistureShield Meridian) on a 350-sqft deck — that's where ROI peaks for most markets.

Not directly in the ROI calc — the decay rates implicitly reflect maintenance demands (PT decays faster because skipped maintenance accelerates aging more than for composite). For full lifetime cost-of-ownership comparison, use the PT Deck Cost or Composite Deck Cost calculators which include 25-year TCO with maintenance schedules. The ROI calc shows what you recoup at sale; TCO shows what you spend over ownership.

Within ±20% for typical residential decks in typical markets. Cost vs Value 2024 baselines are conservative estimates — actual buyers may pay above or below the average. Big variables not in the model: deck condition at sale (a power-washed and re-stained deck recoups more than neglected), competing listings, and broader housing market timing. Use the calculator's number as a planning baseline; expect actual recoup to vary.