---
title: "Deck Building Estimates In Des Moines: 10-Line Checklist"
description: "Compare Des Moines deck building estimates line by line: 42-inch footings, ledger bolts, railings, permit fees and 2027 planning prices per square foot."
url: "https://busybuildersiowa.com/complete-guide-to-deck-construction-estimates/"
---

- Construction and Remodeling Guide

# Deck Building Estimates in Des Moines, Line by Line

- [Blake Daniels](https://busybuildersiowa.com/author/blake-daniels/)
- November 25, 2025
- [Deck Building](https://busybuildersiowa.com/category/deck-building/)

*Last updated October 2026*

A deck building estimate should tell you exactly what you are paying for, from footing depth to the last stair tread. This guide walks Des Moines area homeowners through each line a complete estimate should carry and the planning prices behind those lines. It also shows how to compare two bids that look nothing alike. Every dollar figure here is a planning estimate as of October 2026, not a quote.

**TLDR:** A complete deck building estimate lists footings at least 42 inches deep, framing, the ledger connection, decking, railings and stairs. It also covers the permit, removal, cleanup, payment schedule and warranty. As planning estimates, treated wood decks run about $30 to $50 per square foot installed and composite about $50 to $75. Compare **line by line**, not by total, and question any single-number quote.

---

Winter is when most spring decks get priced. You call two or three builders and the estimates land in your inbox. The totals sit thousands of dollars apart for what looks like the same deck.

The gap usually is not someone padding a bid. It comes from what each estimate includes, what it leaves out, and how the footings, ledger and boards differ. Once you line the estimates up item by item, most of the mystery goes away.

Below, we walk through each line a [Des Moines](https://busybuildersiowa.com/des-moines/) [deck building](https://busybuildersiowa.com/deck-building/) estimate should carry and what the 2024 building code says about the structural lines. We also cover what drives cost and a simple way to compare bids.

## What Should a Deck Building Estimate Include?

A complete deck building estimate lists every part of the job you will pay for, with sizes, materials and quantities. At minimum that means footings, framing, the ledger connection, decking, railings, stairs, the permit, removal and cleanup. It should also state the schedule, payment terms and warranty. If a line is missing, treat it as not included until the builder says otherwise in writing.

The table below shows each line, what it should say, and the red flag that means you need to ask a question.

Estimate line What it should say Red flag

Footings Number of footings, depth (at least 42 inches in the metro), diameter “Footings as needed”

Posts and beams Post size, beam size, lumber grade and treatment No sizes listed

Ledger and flashing Ledger size, 1/2-inch lag screws or bolts, spacing, flashing “Attach to house” with no detail

Joists and hardware Joist size and spacing, hangers, hold-downs, galvanized or stainless fasteners Fastener type left blank

Decking Brand, product line, color, square footage Just “composite” or “wood”

Railings Material, style, linear feet, height No railing on a deck over 30 inches high

Stairs Number of risers, width, handrail, landing Stairs priced “if needed”

Permit and inspections Who applies, the fee, the inspection stops Permit “by owner”

Removal and cleanup Tear-out, haul-away, site cleanup Not mentioned on a replacement

Schedule, payments, warranty Start window, payment milestones, written warranty Large payment before any work

If two estimates fill every row, you can compare them fairly. If one leaves rows blank, that bid is not cheaper yet. It is incomplete.

### Footings: Depth and Size Belong on Paper

Footings are the concrete piers that carry the deck into the ground. Under [the 2024 IRC deck section](https://codes.iccsafe.org/content/IRC2024P1/chapter-5-floors), footings for a deck attached to the house must be protected from frost (R507.3.3). In practice, that means digging below the frost line. The City of Des Moines lists its frost line depth at 42 inches in its [adopted construction code criteria](https://www.dsm.city/departments/development_services/permit_development_center/construction_codes.php).

Footing size comes from IRC Table R507.3.1. It depends on how much deck each post carries and how firm the soil is. That is why two builders can size footings differently for decks that look alike.

**Pro Tip 1:** Ask that the footing line state the depth and diameter of each footing. “At least 42 inches deep” in writing is easy to check at the footing inspection.

### Framing and the Ledger: The Lines That Keep a Deck Attached

The ledger is the board fastened to your house that holds one side of the deck. Under IRC R507.9, it must be at least a 2-by-8, fastened with 1/2-inch lag screws or bolts. Nails alone are not allowed for this connection.

Fastener spacing depends on joist length. For a 12-foot joist span at a 40 pound per square foot live load, lag screws go 15 inches on center under Table R507.9.1.3(1). Flashing above the ledger keeps water out of the wall.

The code also requires a lateral connection, usually metal hold-down devices that tie the deck framing to the house so it cannot pull away (R507.9.2). Fasteners and connectors must be hot-dipped galvanized or a better grade, such as stainless steel, to survive treated lumber (R507.2.3).

**Pro Tip 2:** If the ledger line just says “attach to house,” ask for the fastener size, spacing and flashing in writing. That detail is what the framing inspector checks.

**Pro Tip 3:** Ask whether the bid includes lateral hold-downs. They are a small part of the price, and an estimate that skips them may be missing other structural details too.

### Decking, Railings and Stairs: Name the Product

Decking is where bids drift apart most, because “composite” covers entry boards and premium capped boards at very different prices. Composite boards must carry a label showing they meet ASTM D7032, with their allowed load and span (IRC R507.2.2.1).

**Pro Tip 4:** Ask for the brand, product line and color on the decking line. Then check that the joist spacing on the framing line matches the span printed on the board label.

Railings, which the code calls guards, are required where the deck surface sits more than 30 inches above grade. The code measures that drop at any point within 36 inches of the open edge. Guards must be at least 36 inches tall, with gaps a 4-inch ball cannot pass through (IRC R321.1).

Stairs need risers no taller than 7 3/4 inches and treads at least 10 inches deep (IRC R318.7.5). The IRC requires a handrail once a flight has four or more risers (R318.7.8).

**Pro Tip 5:** Count the stair risers on the plan. Johnston’s deck guidelines require a handrail at three or more risers, so one extra step can add a handrail line to the estimate.

**Pro Tip 6:** Exterior stairs need a light at the top landing (IRC R325.7). If the closest fixture is far away, ask whether the estimate includes a new one. Wiring is done by a licensed electrician.

### Permit, Inspections and Utility Locates

The permit line should name who applies, what the fee is and how many inspections to expect. Deck permit fees in the metro are modest. Des Moines charges $77.25 for a deck under its [January 1, 2026 permit fee schedule](https://www.dsm.city/Documents/Departments/Development%20Services/Permit%20Development%20Center/PDC%20Permit%20Fee%20Schedule.pdf), Waukee charges $80 and Grimes charges $75.

Ankeny works differently. It values an open deck at $12 per square foot and runs that number through its fee table. A 192-square-foot deck lands near $63.

Before anyone digs a footing hole, [Iowa Code 480.4](https://www.legis.iowa.gov/docs/code/480.4.pdf) requires notice to the state one-call center so buried lines get marked. The notice must come at least 48 hours ahead, not counting weekends and holidays.

**Pro Tip 7:** If an estimate says the homeowner pulls the permit, ask why. The permit holder answers to the inspector, and that should be the registered contractor doing the work.

**Pro Tip 8:** On a replacement deck, make sure removal and haul-away has its own line. Tearing out an old deck takes crew time and a dumpster, and it is easy to leave off a low bid.

## What Should a Deck Estimate Total for a 2027 Build?

As planning estimates for 2027 builds, treated wood decks in the Des Moines metro run about $30 to $50 per square foot installed. Cedar runs about $40 to $60, composite about $50 to $75, and PVC or premium capped boards about $65 to $90. Railings, stairs, height and site work push a project toward the top of each range.

These are planning ranges as of October 2026, not quotes. For context, the [2023 NAR outdoor remodeling report](https://www.nar.realtor/research-and-statistics/research-reports/remodeling-impact-report-outdoor-features) priced a 14-by-18-foot cedar deck at about $16,900, based on costs gathered nationwide.

The table below converts each range into a common deck size.

Decking material Planning range per sq ft, installed 16 by 20 deck (320 sq ft) Typical upkeep

Pressure-treated pine $30 to $50 $9,600 to $16,000 Clean and stain every few years

Cedar $40 to $60 $12,800 to $19,200 Clean and seal every few years

Composite $50 to $75 $16,000 to $24,000 Wash once or twice a year

PVC or premium capped $65 to $90 $20,800 to $28,800 Wash once or twice a year

Use the per-square-foot figure only after every row of the estimate table is filled in. Before that, you are comparing unlike bids.

**Illustrative scenario:** An [Ankeny](https://busybuildersiowa.com/ankeny/) couple replaces a worn 12-by-16 treated deck that sits about 6 feet off the ground. The estimate lists tear-out, four new footings at 42 inches, a new flashed ledger, treated decking and a 10-riser stair with handrail. Planning cost runs $8,500 to $10,500, including a permit near $63. After plan review, the crew finishes in about two weeks.

## What Drives a Deck Building Estimate Up or Down?

Material choice moves a deck estimate the most, followed by height, railings, stairs, shape and site conditions. Height matters because taller decks need bigger posts, more bracing, longer stairs and guards. Site work matters because slopes, tight access and buried utilities slow the footing crew.

The table below ranks the common cost drivers.

Cost driver Why it matters Effect on price

Decking material Board price and install time differ High

Deck height Taller posts, required guards, longer stairs High

Railing style Metal, cable and glass cost more than wood Medium to high

Shape and levels Angles and extra levels add framing and waste Medium

Stairs and landings Each riser adds framing, treads and handrail Medium

Removing an old deck Labor, dumpster and disposal Low to medium

Slope and access Longer posts, hand-carried materials Low to medium

Lights or outlets Licensed electrician and a separate permit Low to medium

Two decks with the same footprint can land far apart because of height and railings alone.

**Pro Tip 9:** If the estimate runs over budget, shrink the footprint or simplify the shape before you downgrade the framing. Structure is what the inspector checks and what is hardest to fix later.

**Pro Tip 10:** Ask for the railing priced two ways, such as treated wood and black aluminum. Railing is one of the easiest lines to adjust without touching the structure. Our [railing options for Des Moines decks](https://busybuildersiowa.com/deck-railing-options-des-moines-wood-composite-metal-glass-and-cable/) compare the choices.

**Illustrative scenario:** A [Grimes](https://busybuildersiowa.com/grimes/) family collects winter estimates for a 16-by-20 composite deck with black metal railings and one stair to the yard. Planning range: $18,000 to $24,000. They sign in February so the $75 Grimes permit and material orders are settled before spring. The build takes about two weeks once footing work can start.

## Why the Structure Lines Matter: What Sits Under Our Decks

The parts of a deck you look at every day are the boards and railings. The parts that decide whether it stays safe are underneath. One of our crew photos shows the underside of a new elevated composite deck, with treated posts, beams and joists carrying the boards above.

That is the point many estimates blur. A composite deck still stands on treated wood framing. So the footing, ledger and hardware lines matter just as much as the decking line, and they deserve sizes, not just labels.

Busy Builders is a registered Iowa contractor (DIAL registration C140184), based in West Des Moines. Iowa requires registration for anyone earning at least $2,000 a year from construction. You can check any builder on the [Iowa DIAL contractor registration page](https://dial.iowa.gov/licenses/building/contractor-registration).

Clear communication matters as much as the paperwork. A homeowner who had a composite deck built in spring 2026 reviewed the project and singled out communication and the finished result. An itemized estimate is where that communication starts.

**Pro Tip 11:** Check the registration number on every estimate before you sign. If you cannot find the builder in the DIAL search, stop and ask why.

## How Do You Compare Two Deck Building Estimates?

Put the estimates side by side, fill in the same rows for each, and price any missing line before you compare totals. Then divide each total by the deck’s square footage. A bid that still sits far below the others after that step is usually missing scope or using a lower grade of board.

The table below turns that into five steps.

Step What to do Why it matters

1. Match the scope Same size, height, material line, railing and stairs Unlike decks cannot be compared

2. Fill the gaps Ask each builder to price missing lines in writing Exclusions hide in blank rows

3. Check the structure Compare footing depth, ledger fasteners and hold-downs You cannot see the structure after the build

4. Normalize Divide each total by square feet Shows the real spread

5. Read the terms Payment milestones, schedule, written warranty Protects you if the job stalls

Most of the gap between two honest bids shows up in steps 1 and 2.

**Illustrative scenario:** A [Johnston](https://busybuildersiowa.com/johnston/) homeowner collects two bids for a 14-by-18 composite deck. One is itemized at $17,500. The other is a single line at $13,900 with no permit, no stair and no named board. Priced in writing, the missing lines bring the second bid to about $16,800. The homeowner then chooses on product and schedule, with a gap under $1,000.

**Pro Tip 12:** Tie payments to milestones you can see, such as a passed footing inspection and a passed final. Avoid paying for most of the job before the footings are in.

## Frequently Asked Questions

**Q1: How much does a 12 by 12 deck cost in Des Moines?** As a planning estimate, a 12-by-12 treated wood deck (144 square feet) runs about $4,300 to $7,200 installed. Composite runs about $7,200 to $10,800. Small decks land toward the top of each range because setup, stairs and the permit cost the same at any size. Get an itemized deck building estimate before you set a firm budget.

**Q2: What should a deck building estimate include?** It should list footings with depth and diameter, framing sizes, the ledger connection and flashing, and decking by brand and line. Railings, stairs, the permit, removal and cleanup each need a line too. It should also state the schedule, payment milestones and warranty. Vague lines like “standard materials” make a fair comparison impossible. Ask for anything missing in writing before you sign.

**Q3: Do deck estimates include the permit in Des Moines?** Many do, but check the line. Des Moines charges $77.25 for a deck permit under its January 1, 2026 fee schedule, Waukee $80 and Grimes $75. Ankeny bases its fee on a $12 per square foot deck valuation. Ask who applies and how many inspections the price covers.

**Q4: How many deck estimates should I get?** Two or three complete estimates are usually enough to see a fair range. Give each builder the same size, height, material and railing choices. Every builder scopes a little differently, so matching the inputs matters more than collecting more bids. Then compare them with the five steps above.

**Q5: Why are two deck estimates thousands of dollars apart?** Usually because they do not cover the same work. One may leave out the permit, stairs, removal or hold-downs, or price an entry board against a premium one. Height and railing style also swing totals widely. Price every missing line in writing, then compare cost per square foot.

**Q6: When should I get deck estimates for a spring build in Iowa?** Winter is a good time to collect estimates for a spring deck. Frozen ground slows footing work, so many homeowners line up the design and permit before the thaw. Johnston lists plan review at 5 to 10 working days, and materials need ordering too. Start once you know the size and material you want.

## Key Takeaways

- **Every line in writing:** A complete deck building estimate lists footings, framing, ledger, decking, railings, stairs, permit, removal, schedule and warranty.
- **Structure first:** Attached deck footings go below the frost line, which Des Moines sets at 42 inches, and the ledger needs 1/2-inch lag screws or bolts.
- **Planning prices:** As of October 2026, treated wood runs about $30 to $50 per square foot installed and composite about $50 to $75.
- **Permits are a small line:** Deck permits in the metro cities we checked run under $100 for a typical deck.
- **Compare like with like:** Match the scope and price the missing lines before you compare totals or cost per square foot.

## Get an Itemized Deck Building Estimate From a Registered Contractor

Busy Builders is a registered Iowa contractor with 1,285+ completed projects across Central Iowa since 2020. Bring this checklist to your free consultation and estimate, and ask us to walk through every line. Written warranty on workmanship (details provided in your contract).

Call: [844-435-9800](tel:844-435-9800)

---

**Disclaimer:** This article is for general information and is not project-specific advice. Cost figures are planning estimates as of October 2026 that vary by scope, materials, site conditions and current pricing; they are not quotes. Permit fees, frost depth and code editions vary by city and change over time. Verify current requirements with your local building department before you start. Code sections cited refer to the 2024 International Residential Code; your city may enforce a different edition or local amendments. Structural decisions such as footing size, ledger attachment and hold-downs need evaluation for your specific deck. Do not rely on general guidance for load-bearing work. Electrical work for lights or outlets is done by licensed electricians. No specific outcome is promised. Consult a registered contractor for guidance on your project.

Busy Builders | Full-Service Construction and Remodeling | Serving Central Iowa Since 2020

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Read his guides on home building, remodeling, basements, decks and additions across Central Iowa.","url":"https:\/\/busybuildersiowa.com\/author\/blake-daniels\/","image":{"@type":"ImageObject","@id":"https:\/\/busybuildersiowa.com\/wp-content\/litespeed\/avatar\/1b3807b32c8c2fafb64a2eddb79753af.jpg?ver=1769728917","url":"https:\/\/busybuildersiowa.com\/wp-content\/litespeed\/avatar\/1b3807b32c8c2fafb64a2eddb79753af.jpg?ver=1769728917","caption":"Blake Daniels","inLanguage":"en-US"},"sameAs":["https:\/\/busybuildersiowa.com\/","https:\/\/www.facebook.com\/BusyBuilderz\/","https:\/\/twitter.com\/builders_busy","https:\/\/www.tiktok.com\/@busybuilders","https:\/\/www.youtube.com\/@BusyBuildersLLC"],"worksFor":{"@id":"https:\/\/busybuildersiowa.com\/#organization"}},{"@type":"BlogPosting","headline":"Deck Building Estimates In Des Moines: 10-Line Checklist","keywords":"deck building","datePublished":"2025-11-25T07:31:00-06:00","dateModified":"2026-10-05T15:45:36-05:00","articleSection":"Deck Building","author":{"@id":"https:\/\/busybuildersiowa.com\/author\/blake-daniels\/","name":"Blake Daniels"},"publisher":{"@id":"https:\/\/busybuildersiowa.com\/#organization"},"description":"Compare Des Moines deck building estimates line by line: 42-inch footings, ledger bolts, railings, permit fees and 2027 planning prices per square foot.","name":"Deck Building Estimates In Des Moines: 10-Line Checklist","@id":"https:\/\/busybuildersiowa.com\/complete-guide-to-deck-construction-estimates\/#richSnippet","isPartOf":{"@id":"https:\/\/busybuildersiowa.com\/complete-guide-to-deck-construction-estimates\/#webpage"},"image":{"@id":"https:\/\/busybuildersiowa.com\/wp-content\/uploads\/2025\/11\/Your-Complete-Guide-to-Deck-Construction-Estimates-in-Des-Moines.jpeg"},"inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/busybuildersiowa.com\/complete-guide-to-deck-construction-estimates\/#webpage"}}]},{"@context":"https:\/\/schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Q1: How much does a 12 by 12 deck cost in Des Moines?","acceptedAnswer":{"@type":"Answer","text":"As a planning estimate, a 12-by-12 treated wood deck (144 square feet) runs about $4,300 to $7,200 installed. Composite runs about $7,200 to $10,800. Small decks land toward the top of each range because setup, stairs and the permit cost the same at any size. Get an itemized deck building estimate before you set a firm budget."}},{"@type":"Question","name":"Q2: What should a deck building estimate include?","acceptedAnswer":{"@type":"Answer","text":"It should list footings with depth and diameter, framing sizes, the ledger connection and flashing, and decking by brand and line. Railings, stairs, the permit, removal and cleanup each need a line too. It should also state the schedule, payment milestones and warranty. Vague lines like \"standard materials\" make a fair comparison impossible. Ask for anything missing in writing before you sign."}},{"@type":"Question","name":"Q3: Do deck estimates include the permit in Des Moines?","acceptedAnswer":{"@type":"Answer","text":"Many do, but check the line. Des Moines charges $77.25 for a deck permit under its January 1, 2026 fee schedule, Waukee $80 and Grimes $75. Ankeny bases its fee on a $12 per square foot deck valuation. Ask who applies and how many inspections the price covers."}},{"@type":"Question","name":"Q4: How many deck estimates should I get?","acceptedAnswer":{"@type":"Answer","text":"Two or three complete estimates are usually enough to see a fair range. Give each builder the same size, height, material and railing choices. Every builder scopes a little differently, so matching the inputs matters more than collecting more bids. Then compare them with the five steps above."}},{"@type":"Question","name":"Q5: Why are two deck estimates thousands of dollars apart?","acceptedAnswer":{"@type":"Answer","text":"Usually because they do not cover the same work. One may leave out the permit, stairs, removal or hold-downs, or price an entry board against a premium one. Height and railing style also swing totals widely. Price every missing line in writing, then compare cost per square foot."}},{"@type":"Question","name":"Q6: When should I get deck estimates for a spring build in Iowa?","acceptedAnswer":{"@type":"Answer","text":"Winter is a good time to collect estimates for a spring deck. Frozen ground slows footing work, so many homeowners line up the design and permit before the thaw. Johnston lists plan review at 5 to 10 working days, and materials need ordering too. Start once you know the size and material you want."}}]}]
```