When two contractors give you quotes for the same 400-square-foot deck, and one is much lower, most people assume the higher price is just extra padding or markup.
The reality is that the price gap rarely means extra profit. Even with the same deck size and location, the two bids often result in two very different decks, even if the proposals look similar.
The numbers that should make you pause (per the North American Deck and Railing Association):
- Roughly 90% of deck collapses originate at the ledger board, the connection point where the deck meets the house
- More than 30 million decks across North America have outlived their service life
- Over 75% of people involved in a deck collapse sustain significant injuries
The Anatomy of a Low Bid
A low quote is usually made possible by cutting things you won’t notice right away.
1. Framing fasteners and hardware
Joist hangers, structural screws, ledger bolts, post bases, and lateral tension ties keep the deck attached to your house and itself. The quality of these parts comes in different levels:
- Basic plated hardware: the entry tier, first to corrode in Colorado snowmelt
- Hot-dipped galvanized: mid-tier, lasts decades longer
- Stainless steel: top tier, the only sane choice within ten feet of a hot tub or pool
A ledger connection that meets code, using carriage bolts, lag screws, and proper flashing, takes hours to install properly.
2. Lumber and Decking Surface: The Visible Difference
Materials are where the quality gap is most obvious to the naked eye, but the real issues often hide just below the surface.
The Framing Spectrum (what holds the deck up, hidden under the boards):
- Pressure-treated wood (entry tier): Affordable, but inconsistent. “Wet-treated” lumber straight from the yard cups, splits, and gaps after one or two Colorado seasons.
- Premium Wrapped Treated (PWT) or Kiln-Dried-After-Treatment (KDAT) lumber (mid-tier): Processed to hold shape and resist the warping common in high-altitude conditions.
- Steel framing (top tier): Won’t rot, won’t warp, won’t burn. The structural gold standard.
The Decking Spectrum (what you walk on):
- Pressure-treated lumber (budget tier): The cheapest surface option, prone to splintering, high-maintenance, and short-lived once exposed to Colorado sun.
- Builder-grade composite (mid-tier): Better durability than basic wood, but with a limited color range and shorter warranties.
- Premium composite from Trex, TimberTech, and Deckorators (top tier): Eliminates the maintenance cycle of wood entirely; longer warranties, richer color, and far better fade resistance.
3. Labor: Who is Actually Swinging the Hammer?
The most expensive deck you’ll ever buy is the one you have to build twice because the first crew didn’t know the code.
According to NADRA, only 40% of new decks are built by experienced professionals; the remaining 60% are built by homeowners, day laborers, or unqualified hands.
Skilled deck carpenters earn skilled-trade wages, and that line shows up in every quality bid. Low-bid contractors skip the wage premium by rotating through subcontracted day labor; part of why the lowest price comes in so far below the rest.
What a skilled carpenter brings to the site:
- Precision: Tighter miter cuts, perfectly square corners, laser-straight posts
- Technical detail: Properly sized footings and accurate ledger flashing to prevent house rot
- Consistency: The same team from day one to the last screw, under steady supervision
4. Permits, Footings, and Structural Review
Plans reviewed by an engineer, permits, inspections, and footings dug below frost depth (usually 36 inches in Colorado) all add real cost compared to skipping permits and using surface piers. Leaving out any of these may lower the price but also increase the risk of serious problems.
5. Warranty and Accountability
A multi-year workmanship warranty carries real operational weight; the contractor must remain solvent, insured, and reachable long after the project closes. Many low-bid outfits operate on margins so thin that warranty calls get ignored, ghosted, or answered by a disconnected number.
Where the Difference Actually Lives: Side-by-Side
| Line Item | Low-Bid Approach | Quality Approach |
| Framing lumber | Wet pressure-treated, ungraded | Steel framing or PWT, sorted for straightness |
| Decking surface | Builder-grade composite or budget wood | Premium composite (Trex, TimberTech, Deckorators) |
| Hardware | Code-minimum, basic plated | Hot-dipped galvanized or stainless, complete lateral connectors |
| Ledger connection | Lag screws or, in worst cases, nails | Through-bolted with tension ties, properly flashed |
| Footings | Surface piers, undersized | Below frost line, sized for load |
| Labor | Day labor, rotating crews | Vetted trade partners, consistent supervision |
| Plan review | None | Licensed structural engineer reviews plans |
| Warranty | Verbal, often unenforceable | Written, multi-year workmanship coverage |
| Communication | Sporadic, reactive, easy to ghost | Weekly progress updates, dedicated project manager |
What Cheap Actually Costs Later
Every cheap quote comes with two hidden costs. One shows up during construction, and the other appears years down the road.
Cost #1: The change-order trap
A contractor who bids very low knows the price won’t cover the real work. From the start, their plan is to make up the difference with change orders during the build, modifications, upgrades, and “discoveries,” all of which come with extra charges.
Final invoices often end up much higher than the original quote. If you walk away at that point, you lose all the money you’ve already paid.
Cost #2: The tear-out, years later
Quality contractors take a particular kind of phone call more often than homeowners realize: a customer who went with the lowest bid two or three years ago, calling because the deck has failed.
The failure modes are familiar:
- Decking rotting from below
- Ledger pulling away from the house
- Footings shifted, structure no longer level
- Hardware corroded, joists sagging or splitting
The solution is usually to tear everything out and start over with new permits, footings, framing, surface, and hardware. The money you paid the first contractor is gone..
The conversation we wish we didn’t have: A homeowner whose project failed three years after install, asking what it would take to make it right. The answer is almost always heavier than the original “expensive” bid.
Pro Tip: Ask every bidder for an itemized scope of work in writing that lists fastener type, lumber grade, footing depth, and warranty duration. A quality contractor will hand it over without hesitation. A low-bid contractor will get vague fast.
Why Most Builders Avoid the Cost Conversation
Most contractors won’t talk about this openly, and there’s a reason for that. Here’s why.
Vague bids are rarely about saving time; they’re about hiding shortcuts. Transparency is what separates a professional service from a “cheap” product.
- Trust in the Details: Quality builders use specifics to prove their value. Low-bid contractors stay vague because details reveal their corner-cutting.
- The “Experience” Cost: Your quote won’t list the frustration of missed calls or surprise charges. A beautiful deck is easily soured by a chaotic build process.
Pro Tip: Ask how long the company has used its current name and license. Frequent name changes are a common tactic to outrun past failures and warranty claims.
FAQ: Honest Answers About Cheap Deck Bids
Why is one quote dramatically lower than the others?
A wide gap almost always means cuts to hardware grade, lumber, labor experience, footing depth, or all of the above. A modest gap usually reflects brand investment, communication, and warranty depth, not a structural shortcut. The wider the gap, the louder the warning bell.
Can a cheap deck be brought up to standard later?
Sometimes, but rarely cheaply. Reframing under a finished deck means tearing out the surface boards, which often means buying new ones. Spending less up front often means spending twice as much on the rebuild.
How long should a properly built Colorado deck last?
A properly framed wood deck has a 10 to 25-year service life. Composite decking on quality framing can last 25 to 50 years. A cheaply framed deck of any surface material typically needs major repair within 7 to 10 years, regardless of what’s on top.
Cheap Is a Verdict, Not a Number
In deck construction, cheap isn’t just about price. It’s about choices made in the parts of the deck no one sees. These trade-offs affect how long your deck lasts, how safe it is, and how many change orders you’ll face during the project.
At O’Keefe Built, we believe the smartest investment a Colorado homeowner makes outside the front door looks like:
- One quote, one detailed scope, one solid build
- A written, multi-year workmanship warranty
- Weekly progress updates from a project manager who answers the phone
- An interactive proposal that itemizes every line, before any work begins
Reach out for a site visit and a bid where the math holds up to scrutiny, before, during, and a decade after the last screw goes in.