How much does a bathroom addition cost in Kent, WA?

The average bathroom addition in Kent, WA costs $54,118 in 2026. Costs range from $24,052 for a basic project to $108,236 for a high-end renovation. Kent is 20% more expensive than the national average of $45,000.

What is the labor rate for contractors in Kent?

The average contractor labor rate in Kent, WA is $37.37/hour, compared to the national average of $30/hour. For a bathroom addition, labor typically accounts for 55% of the total cost, which is approximately $29,765 in Kent.

Are materials more expensive in Kent?

Kent has a material cost index of 115 (national average = 100). Materials cost about 15% more than the national average. For a bathroom addition, materials account for 45% of the cost, approximately $24,353.

Do I need a permit for a bathroom addition in Kent?

Yes, a bathroom addition typically requires building permits in Kent, WA. The average permit cost in Kent is $1,501. Always confirm requirements with the Kent building department before starting work.

Is a bathroom addition a good investment in Kent?

A bathroom addition provides an estimated 58% ROI nationally. In Kent, where the median home price is $465,219, this project costs about 11.6% of your home value. This is a moderate investment relative to home value — focus on features that appeal to buyers in the local market.

Bathroom Addition in Kent, WA — Costs $24,052 to $108,236

What does bathroom addition cost in Kent? Average $54,118, ranging $24,052–$108,236. Labor runs $37.37/hr locally — 20% above the national average. Free breakdown with material + labor split.

Kent, WA Market

+20% vs national

Labor Rate

$37.37/hr

Material Index

115

Avg Permit Cost

$1,501

Median Home Price

$465,219

Kent is a mid-sized city in Washington with a healthy pool of local contractors. Homeowners generally have several options to compare for a bathroom addition, which helps keep pricing competitive. At 20% above the national average, Kent is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Kent is valued at $465,219, putting this project at about 11.6% of home value — a moderate investment with a projected 58% ROI.

Low Estimate

$24,052

National: $20,000

Mid-Range

$54,118

National: $45,000

High End

$108,236

National: $90,000

Per Sq Ft

$481

National: $400

Duration: 6-10 weeks

DIY: Hard

Permits: Required

ROI: 58%

Bathroom Addition Cost Calculator for Kent

Adjusted for Kent's labor rate ($37.37/hr) and material costs (index 115).

Project Size: 200 sq ft

50 sq ft1,000 sq ft

Quality Level

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

Estimated Total in Kent

$54,118

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

Local Cost Breakdown

Labor (55%)$29,765

At Kent's average rate of $37.37/hr (25% above national avg)

Materials (45%)$24,353

Material cost index 115 (15% above national baseline of 100)

Bathroom Addition vs. Home Value in Kent

Metric	Kent	National Avg
Bathroom Addition (Mid-Range)	$54,118	$45,000
Median Home Price	$465,219	$350,000
Project as % of Home Value	11.6%	12.9%
Estimated ROI	58%	58%
Median Household Income	$87,006	$75,000

What Affects the Price in Kent

1Local labor rates ($37.37/hr in Kent)
2Material cost index (115 vs national 100)
3Location (new vs converted space)
4Plumbing distance
5Full vs half bath
6Fixture quality

Popular Upgrades

Walk-in shower
Double vanity
Heated floors

Other Projects in Kent, WA

Kitchen Remodel

$49,907

HardROI 72%

Master Bathroom Remodel

$33,405

HardROI 65%

Bathroom Remodel

$21,475

MediumROI 68%

Mudroom Addition

$17,967

HardROI 55%

Second Story Addition

$239,567

HardROI 60%

Accessory Dwelling Unit (ADU) Construction

$179,675

HardROI 80%

Room Addition

$107,805

HardROI 55%

Home Addition

$95,444

MediumROI 60%

Bathroom Addition in Other Washington Cities

Seattle, WA

$69,137

+28%Pop. 737,015

Spokane, WA

$62,608

+16%Pop. 228,989

Tacoma, WA

$54,324

SamePop. 219,346

Vancouver, WA

$58,488

+8%Pop. 190,915

Bellevue, WA

$67,916

+25%Pop. 151,854

Everett, WA

$59,500

+10%Pop. 110,629

Renton, WA

$62,016

+15%Pop. 106,785

Spokane Valley, WA

$62,049

+15%Pop. 103,597

Planning a Bathroom Addition in Kent

Building permits are typically required for a bathroom addition in Kent. The average permit fee in this area is $1,501, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-10 weeks from start to finish.

A bathroom addition is a complex project best left to licensed professionals. In Kent, skilled contractors charge an average of $37.37/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.

With a median household income of $87,006, many Kent residents can budget for this project through savings. The mid-range cost of $54,118 represents 62% of the typical household's annual income.

Bathroom Addition — National Guide

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

All Construction Costs in Kent

View labor rates, material costs, and project estimates for Kent, WA.

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