CostInMyCity

St. Louis, MO / Deck

Deck cost in St. Louis, MO

Typical cost: $15,467 (range $10,319 to $20,654)

Typical all-in

$15,467

Job cost plus the local permit fee at this size.

Low
$10,319
Typical
$15,467
High
$20,654

Walking surface only. A 16 by 20 deck is 320 sqft.

Breakdown

Labor (allocated)$7,661
Materials (allocated)$7,661
Job subtotal$15,322
Permit$145
All-in typical$15,467

Labor is adjusted for construction wages in this metro. Materials stay at the national figure. This is an estimate, not a contractor quote.

A typical attached deck we price is 16×20 (320 sf).

A typical deck in St. Louis, MO is about $15,467, including a permit fee of $145.

What we assumed

For the permit line we assumed the City of St. Louis Building Division formula, a $25 application fee plus $10 per $1,000 of the full assumed valuation (or fraction), at the official $12,000 typical valuation, so the typical fee is $145 ($25 + $120). Low $105 and high $225 use the same formula at $8,000 and $19,200. These totals are for the City of St. Louis, not St. Louis County. Attached residential deck uses the building-permit valuation table. Full arithmetic is in the calculation note on this page.

Typical job we price for Deck in St. Louis, MO

Typical scope
16×20 = 320 sf
Low scope
200 sf
High scope
400 sf
Project value for permit formula (typical)
$12,000
Project value range for permit formula
$8,000 to $19,200

An attached deck, not a roof deck or a second story.

Mid-range 2026 job band for a typical 16×20 attached deck

Typical job sizes and assumed values from our published sources. Assumed values feed the permit formula. They are not the city's assessed value.

Local context

City facts

County
St. Louis city
Population
278,144
Estimate year
2025
Source
U.S. Census Bureau Vintage 2025 city estimates (July 1, 2025)

Census and county figures. These are estimates, not a permit requirement.

Why deck costs differ in St. Louis, MO

Labor for deck in St. Louis, MO is adjusted for local construction wages. Materials stay at the national figure.

The official permit fees for a deck in St. Louis, MO are $105 at $8,000, $145 at $12,000, and $225 at $19,200. Each total is the $25 application fee plus $10 per $1,000 of the full assumed valuation (or fraction): Low $8,000: $25 + $10×8 = $105, Typical $12,000: $25 + $10×12 = $145, and High $19,200: $25 + $10×20 = $225. The $145 typical is the official $25 application fee plus the official $120 building permit fee, and both extras are included. Those permit totals stay on the assumed valuation. They are not rescaled when the deck size changes, and they are not adjusted for local wages.

These totals are for the City of St. Louis Building Division. St. Louis is an independent city, not St. Louis County, and this row does not use a St. Louis County fee. Attached residential deck uses the building-permit valuation table. This row does not invent a historic-district review fee.

Building and trade permits for St. Louis, MO run through City of St. Louis Building Division under the official 2026 fee schedule. The cited schedule is City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000) (source retrieved 2026-09-01). This deck row uses the official $25 application plus $10 per $1,000 of the full assumed valuation (or fraction). The phrase over $3,000 is the bracket where that formula applies. Peer listed typical permit fees in this cluster include Charlotte, NC $182.41, Seattle, WA $1,058.60, Denver, CO $172.50, Nashville, TN $91, Atlanta, GA $175, Austin, TX $577.39, Phoenix, AZ $646, Tucson, AZ $337.49, Portland, OR $102.69, Raleigh, NC $248, Tacoma, WA $521. We only use fees extracted from the official schedule.

Uses the city fee schedule and BLS wage data. If a fee is not published, that line stays blank.

Cost details

Cost by size

SizeAll-in typicalPermit
200 sf$9,721$145
16×20 = 320 sf (typical)$15,467$145
400 sf$19,297$145

All-in at this size, adjusted for local wages. The permit is the city fee when the schedule lists one.

Labor vs materials

Labor share
50%
Materials share
50%
Cost source
How Much Does It Cost to Build a Deck? [2026 Data]

Labor $15–$35 per sq ft vs $30–$60 installed. We split labor and materials 50/50 to adjust labor for local wages.

Our labor and materials split for this estimate. It is for the local wage adjustment, not a surveyed contractor split.

What moves the price

What changes the total

  • Size is the deck surface area. The size table lists the low, typical, and high.
  • Labor for Deck in St. Louis, MO is adjusted for local construction wages.
  • The permit fee on the typical job is $145. The permit section on this page has the schedule detail.

Metro wage index

Metro
St. Louis, MO-IL
Metro construction mean hourly
$35.43/hr
Metro OEWS vintage
May 2025
National construction mean hourly
$31.42/hr
National OEWS vintage
May 2025
Labor wage multiplier
1.128× labor
Method
BLS OEWS construction-and-extraction mean hourly wage / national same vintage, applied to the labor share only. Not a city-specific bid survey.
Metro source
BLS OEWS metro release
National source
BLS OEWS national release

For this metro the whole job is 1.064 times the national typical, because only the labor portion is adjusted for local wages.

Compare deck across metros

All-in at the typical job size, adjusted for local wages. The permit is the city fee when the schedule lists one.
CityAll-in typicalPermitOpen
Charlotte, NC$13,704$182.41Open
Seattle, WA$17,907$1,059Open
Denver, CO$14,933$172.50Open
Nashville, TN$13,843$91Open
Atlanta, GA$13,855$175Open
Austin, TX$14,041$577.39Open
Phoenix, AZ$14,585$646Open
Tucson, AZ$13,657$337.49Open
Portland, OR$16,332$102.69Open
Raleigh, NC$13,784$248Open
Tacoma, WA$17,369$521Open
St. Louis, MO$15,467$145This page

Other home projects in St. Louis, MO

All-in at the typical job size, adjusted for local wages. The permit is the city fee when the schedule lists one.
JobAll-in typicalPermitOpen
Roof replacement$10,424$145Open
HVAC replacement$7,850$65Open
Deck$15,467$145This page
Kitchen remodel$31,420$460Open

Questions about this estimate

How much does deck cost in St. Louis, MO?
Typical all-in is about $15,467. The official City of St. Louis Building Division permit fee of $145 ($25 application plus $120 building permit) is included in the all-in.
Is a permit required for Deck in St. Louis, MO?
Yes. City of St. Louis Building Division requires a permit for a typical Deck in St. Louis, MO. The typical listed fee is $145. The official path is the City of St. Louis Building Division: a $25 application fee plus $10 per $1,000 of the full assumed valuation (or fraction). At the official $12,000 valuation that is $145 ($25 + $120). Low $105 and high $225 are the same formula at $8,000 and $19,200. These totals are for the City of St. Louis, not St. Louis County. Attached residential deck uses the building-permit valuation table.
What is included in this Deck estimate for St. Louis, MO?
The estimate is labor adjusted for local wages in St. Louis, MO, plus materials at the national figure, at the typical size in the table above. The official typical permit fee of $145 is included in the all-in typical. That $145 is the $25 application fee plus the $120 building permit fee at the $12,000 typical valuation. Both extras are included. Attached residential deck uses the building-permit valuation table.
Why might the St. Louis permit fee differ from this typical figure?
The official St. Louis, MO fee comes from City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000) (valuation). The typical path is $145 at the official $12,000 valuation: $25 application plus $10 per $1,000 of the full assumed valuation ($25 + $120). Low $105 at $8,000 and high $225 at $19,200 use the same formula. These totals are for the City of St. Louis Building Division, not St. Louis County. Attached residential deck uses the building-permit valuation table. Verify with City of St. Louis Building Division.
How is the typical permit fee calculated for Deck in St. Louis, MO?
Listed totals are $105 at $8,000, $145 at $12,000, and $225 at $19,200. Each total is $25 plus $10 per $1,000 of the full assumed valuation (or fraction): Low $8,000: $25 + $10×8 = $105, Typical $12,000: $25 + $10×12 = $145, and High $19,200: $25 + $10×20 = $225. The official typical extras are the $25 application fee and the $120 building permit fee, and both are included. Attached residential deck uses the building-permit valuation table. Full arithmetic is in the calculation note on this page.
What project value is this Deck permit fee based on in St. Louis, MO?
Project values used only for the permit formula (not your total cost): low $8,000, typical $12,000, and high $19,200. The official typical project value is $12,000. The permit totals at those values are $105, $145, and $225. The formula is $25 plus $10 per $1,000 of the full assumed valuation (or fraction). At $19,200 the or-fraction rule rounds 19.2 up to 20 thousands.

Permit in St. Louis

Fee schedule retrieved Sep 1, 2026

City of St. Louis Building Division lists a typical permit fee of $145 for this Deck in St. Louis, MO (range $105 to $225). Source: City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000).

Attached residential deck uses the building-permit valuation table. City of St. Louis, not St. Louis County.

Fee model

Fee model
Valuation-based
Cited schedule
City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000)

The source named on this row is City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000), source retrieved 2026-09-01, at https://www.stlouis-mo.gov/government/departments/public-safety/building/permits/building-permits/building-permit.cfm. The schedule line on this row applies when the job value is over $3,000: a $25 application fee plus $10 per $1,000 of the full assumed valuation, or fraction thereof. The official numbers apply that $10 rate to each full assumed valuation. They do not charge $10 only on the dollars above $3,000. The multiplier is 8 at the $8,000 low, 12 at the $12,000 typical, and 20 at the $19,200 high. At $19,200 the thousand-count is 19.2, and the schedule's or-fraction rule rounds that up to 20. Low $8,000: $25 + $10×8 = $105. Typical $12,000: $25 + $10×12 = $145. High $19,200: $25 + $10×20 = $225. The official typical project value is $12,000, and the assumed valuations are $8,000 low, $12,000 typical, and $19,200 high. The $105 low fee is listed with the $8,000 assumed valuation, the $145 typical fee is listed with the $12,000 assumed valuation, and the $225 high fee is listed with the $19,200 assumed valuation. A permit is required on this path, and the fee follows that valuation formula. Two extras are listed, and both extras are included in the totals: the Application fee is $25, and the note on that extra is Included; the Building permit fee is $120, and the note on that extra is Included. That $120 building fee is the official extra at the typical valuation ($10×12), and $25 + $120 = $145. The low and high totals use the same formula. They are not additional extra rows. These totals are for the City of St. Louis Building Division. St. Louis is an independent city, not St. Louis County, and this row does not use a St. Louis County fee. Attached residential deck uses the building-permit valuation table. The typical-job spec on this row is 16×20 = 320 sf of walking surface. This row does not invent a historic-district review fee, a St. Louis County building fee, or any dollar that is not in the official schedule extract.

Official permit schedule figures. Check the city's calculator before you apply.

Fee schedule

Schedule year
2026
Official schedule
Official fee schedule
Cited source
City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000)
Retrieved
Sep 1, 2026
Department
City of St. Louis Building Division

City permit office figures. Confirm current fees with City of St. Louis Building Division before you apply.

Portal

Department
City of St. Louis Building Division
Apply online
Official permit portal

City permit office figures. Confirm current requirements with City of St. Louis Building Division before you apply.

Line items

Figures come from the city fee schedule. A blank line is not published as a dollar amount.
Line itemFee
Application fee$25
Building permit fee$120

Assumed project value

These are the official valuations used when the schedule scales with project value. Not a quote.
BandAssumed project value
Low$8,000
Typical$12,000
High$19,200

Process

Does a typical Deck in St. Louis, MO need a permit?
A typical Deck in St. Louis, MO is listed as requiring a permit. Attached residential deck uses the building-permit valuation table.
Who issues the permit in St. Louis, MO, and where do I apply?
City of St. Louis Building Division issues permits for Deck in St. Louis, MO. Apply at https://www.stlcitypermits.com/.
What extra fees or surcharges are listed for Deck in St. Louis, MO?
The official permit lists these extra line items for Deck in St. Louis, MO: Application fee: $25; Building permit fee: $120.

Schedule FAQ

Which official schedule is this Deck fee based on in St. Louis, MO?
The official typical for Deck in St. Louis, MO cites City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000) (retrieved Sep 1, 2026). Fee model: valuation.
What local fee-schedule notes are on file for Deck in St. Louis, MO?
Building permit $25 application + $10 per $1,000 over $3,000. Mechanical residential: application $25 plus furnace/condensing/combination $40 each (Ordinance 70800).
Why does the Deck permit fee in St. Louis, MO show a low-to-high range?
Listed permit fees for Deck in St. Louis, MO span $105 to $225, with a typical of $145. The source named on this row is City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000), source retrieved 2026-09-01, at https://www.stlouis-mo.gov/government/departments/public-safety/building/permits/building-permits/building-permit.cfm. We

Citations

  1. How Much Does It Cost to Build a Deck? [2026 Data] Retrieved Aug 13, 2026. Average $8,316; $4,340–$12,652; $30–$60/sf; labor $15–$35/sf.
  2. City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000) Retrieved Sep 1, 2026.
  3. BLS OEWS construction wages – St. Louis, MO-IL BLS OEWS construction-and-extraction mean hourly wage / national same vintage, applied to the labor share only. Not a city-specific bid survey.

Cite this page

Fee schedule retrieved Sep 1, 2026

CostInMyCity. "Deck cost in St. Louis, MO." https://costinmycity.com/cost/deck/st-louis-mo/. Fee schedule retrieved Sep 1, 2026. Source: City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000).

City of St. Louis Building Division building permit fees ($25 application + $10 per $1,000 over $3,000)

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