How much does a mudroom addition cost in Renton, WA?

The average mudroom addition in Renton, WA costs $20,470 in 2026. Costs range from $6,823 for a basic project to $54,587 for a high-end renovation. Renton is 36% more expensive than the national average of $15,000.

What is the labor rate for contractors in Renton?

The average contractor labor rate in Renton, WA is $44.98/hour, compared to the national average of $30/hour. For a mudroom addition, labor typically accounts for 50% of the total cost, which is approximately $10,235 in Renton.

Are materials more expensive in Renton?

Renton has a material cost index of 123 (national average = 100). Materials cost about 23% more than the national average. For a mudroom addition, materials account for 50% of the cost, approximately $10,235.

Do I need a permit for a mudroom addition in Renton?

Yes, a mudroom addition typically requires building permits in Renton, WA. The average permit cost in Renton is $1,646. Always confirm requirements with the Renton building department before starting work.

Is a mudroom addition a good investment in Renton?

A mudroom addition provides an estimated 55% ROI nationally. In Renton, where the median home price is $560,000, this project costs about 3.7% of your home value. This is a small percentage of home value, making it a relatively low-risk improvement.

Mudroom Addition in Renton, WA — Costs $6,823 to $54,587

What does mudroom addition cost in Renton? Average $20,470, ranging $6,823–$54,587. Labor runs $44.98/hr locally — 36% above the national average. Free breakdown with material + labor split.

Renton, WA Market

+36% vs national

Labor Rate

$44.98/hr

Material Index

123

Avg Permit Cost

$1,646

Median Home Price

$560,000

Renton is a mid-sized city in Washington with a healthy pool of local contractors. Homeowners generally have several options to compare for a mudroom addition, which helps keep pricing competitive. At 36% above the national average, Renton is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. With a median home price of $560,000, this mudroom addition represents just 3.7% of typical home value — a relatively small investment that can significantly boost curb appeal or functionality.

Low Estimate

$6,823

National: $5,000

Mid-Range

$20,470

National: $15,000

High End

$54,587

National: $40,000

Per Sq Ft

$177

National: $130

Duration: 2-4 weeks

DIY: Hard

Permits: Required

ROI: 55%

Mudroom Addition Cost Calculator for Renton

Adjusted for Renton's labor rate ($44.98/hr) and material costs (index 123).

Project Size: 200 sq ft

50 sq ft1,000 sq ft

Quality Level

Mid-grade materials, good quality fixtures, standard options.

Estimated Total in Renton

$20,470

Based on 200 sq ft at mid quality, adjusted for Renton market rates.

Local Cost Breakdown

Labor (50%)$10,235

At Renton's average rate of $44.98/hr (50% above national avg)

Materials (50%)$10,235

Material cost index 123 (23% above national baseline of 100)

Mudroom Addition vs. Home Value in Renton

Metric	Renton	National Avg
Mudroom Addition (Mid-Range)	$20,470	$15,000
Median Home Price	$560,000	$350,000
Project as % of Home Value	3.7%	4.3%
Estimated ROI	55%	55%
Median Household Income	$68,000	$75,000

What Affects the Price in Renton

1Local labor rates ($44.98/hr in Renton)
2Material cost index (123 vs national 100)
3Existing vs new space
4Built-in storage
5Bench and hooks
6Flooring type

Popular Upgrades

Built-in cubbies
Bench with storage
Dog wash station

Other Projects in Renton, WA

Bathroom Addition

$62,016

HardROI 58%

Kitchen Remodel

$56,185

HardROI 72%

Master Bathroom Remodel

$37,834

HardROI 65%

Bathroom Remodel

$24,322

MediumROI 68%

Second Story Addition

$272,933

HardROI 60%

Accessory Dwelling Unit (ADU) Construction

$204,700

HardROI 80%

Room Addition

$122,820

HardROI 55%

Home Addition

$108,096

MediumROI 60%

Mudroom Addition in Other Washington Cities

Seattle, WA

$22,833

+12%Pop. 737,015

Spokane, WA

$20,718

+1%Pop. 228,989

Tacoma, WA

$18,030

-12%Pop. 219,346

Vancouver, WA

$19,210

-6%Pop. 190,915

Bellevue, WA

$22,435

+10%Pop. 151,854

Kent, WA

$17,967

-12%Pop. 136,588

Everett, WA

$19,707

-4%Pop. 110,629

Spokane Valley, WA

$20,480

SamePop. 103,597

Planning a Mudroom Addition in Renton

Building permits are typically required for a mudroom addition in Renton. The average permit fee in this area is $1,646, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 2-4 weeks from start to finish.

A mudroom addition is a complex project best left to licensed professionals. In Renton, skilled contractors charge an average of $44.98/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.

For the median Renton household earning $68,000/year, this project at $20,470 represents a significant investment. Consider financing options or phasing the work to spread costs over time.

Mudroom Addition — National Guide

See the full national cost guide with DIY tips, cost factors, and ROI analysis.

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