Why Are Some Deck Quotes $10,000 Apart?

If you’ve gotten multiple quotes for a new deck, you’ve probably noticed something surprising.

One company might be at $22,000.Another at $29,000.Another at $35,000.

And you’re left wondering…

How can they all be building “the same thing” but be thousands of dollars apart?

The truth is, they’re usually not building the same thing.

Here are a few reasons why deck quotes can vary so much.

1. What’s Under the Deck Matters More Than What’s On Top

Most homeowners focus on the decking boards and railings. That’s understandable because that’s what you see.

But the structure underneath is what determines how long the deck lasts.

Things like:

• Joist spacing (12” on center vs 16”)

• Whether joist tape is used

• The quality of fasteners and hardware

• Proper flashing where the deck meets the house

• How footings are installed

These details don’t always show up clearly in a proposal, but they absolutely affect durability and long-term performance.

2. Materials Aren’t All Equal

There’s a big difference between entry-level composite and premium capped PVC products.

Trex, TimberTech, AZEK, and Deckorators all have different product lines, and even within each brand there are major differences.

Some quotes are based on:

• Basic composite boards

• Mid-tier capped composite

• Premium PVC decking

Those material choices alone can create thousands of dollars in difference.

3. Who Is Actually Building Your Deck?

Some companies operate with in-house crews. Some subcontract. Some are owner-operated.

That doesn’t automatically make one better than the other, but it does affect:

• Quality control

• Communication

• Attention to detail

• Accountability

When you’re comparing quotes, it’s worth asking who will actually be on site each day.

4. Sales Structure

High-volume companies often have:

• Dedicated sales teams

• Large marketing budgets

• Commission structures

• Showrooms

Those costs get built into pricing.

On the other end, extremely low bids may cut corners in labor, materials, or structural details.

The lowest number isn’t always the best value.The highest number isn’t automatically the best either.

5. Scope Differences You Might Not Notice

Two proposals can look similar at a glance, but differ in:

• Permit handling

• Demo and disposal

• Footing type

• Rail systems

• Lighting packages

• Fascia and skirting details

Make sure you’re comparing apples to apples.

So What Should You Do?

Instead of asking, “Why is this one cheaper?”Ask:

• What am I getting for this price?

• How is it being built?

• What standards are being followed?

• What will this look like in 10–15 years?

A deck is a long-term structure attached to your home. It’s worth understanding what you’re paying for.

If you’re considering a new deck and want to walk through options clearly without pressure feel free to reach out. I’m always happy to explain what goes into a build and why.

— Phil w/ TBC Decks