Search thousands of topics on CostHelper.com

BROWSE ALL TOPICS >> appliances babies & children  cars  consumer electronics health & personal care home & garden personal finance  pets  schools small business weddings
CostHelper > Home and Garden  > Construction & Renovation > Bathroom Addition

Bathroom Addition Cost


How Much Does a Bathroom Addition Cost?

 
low costLow: DIY Materials Start $500-$1,500average costMedium: Simple Conversion Starts $3,000-$6,000high costHigh: Adding Floor space Can Run $25,000-$50,000+
post E-mail post Post   Comments (3)

A bathroom addition can range from a small half-bath (sink, toilet and mirror) to a spa-like master bath. Adding a bathroom is usually more expensive per square foot than other rooms because it requires specific types of plumbing, heating, electricity and ventilation.

Typical costs:

  • Converting existing floor space inside a garage, basement or attic into a simple bathroom starts around $3,000-$6,000. However, costs can be $7,000-$25,000 or more for a more luxurious bathroom, or if the new bathroom is far from existing water and sewer lines. Prices may vary significantly by region, depending on local labor rates.
  • Costs for do-it-yourself materials start around $500-$1,500, but can run $2,000-$5,000 or more depending on room size, the quality of fixtures and other amenities. A Pennsylvania homeowner[1] added a 4x8-foot powder room with granite and upgraded fixtures for about $5,000, doing all the work himself except the rough-in plumbing.
  • Adding new floor space to your home for a basic 6x8-foot bathroom addition starts around $25,000-$50,000 and goes up depending on complexity, quality of fixtures, number of amenities and local labor rates. Remodeling Magazine[2] pegs the price of a 6x8-foot bathroom addition at averages of $33,188-$41,195 in the Midwest, $34,876-$42,491 along the East Coast and $35,987-$47,052 in the Western states. For a spa-quality 100-square-foot master bath the survey says it averages $75,812 nationwide.
Related articles: Home Addition, Bedroom Addition, Family Room Addition, Second Floor Addition, Porch, Basement Remodeling

What should be included:
  • If you're adding new floor space, before you do anything else check with your local planning department. Better Homes and Gardens provides an overview of legal remodeling requirements.
  • As a general rule, a half-bath should be at least 3-4 feet wide and 6-8 feet long, or at least 18 square feet; a bathroom with shower should be 30 square feet or more; and a bath with both a shower and tub should be at least 35 square feet. ThisOldHouse.com explains how to plan a half-bath[3] (also called a bonus bath) while RemodeOrMove.com lists things to consider[4] for any size bathroom addition.
Additional costs:
  • Adding a tile floor, marble counter tops, or other upscale features can dramatically increase the weight load on your foundation. You might need to consult with a structural engineer (anywhere from $300-$800 or more, depending on what's needed and rates in your area) to see if the foundation needs to be reinforced.
  • Hiring an architect to create a set of plan drawings could cost you a flat fee of $700-$30,000 or more, depending on size and complexity, or the architect may charge 5-15 percent of the project's costs.
  • Usually a bathroom addition will trigger a reassessment of your property taxes and a resulting tax increase, but in most areas the reassessment will only be on the value of the addition, not the entire house.
  • Bathroom design books[5] cost $10-$40 or more, and can give you great ideas and tips; they may also be available at your local library.
Shopping for a bathroom addition:
  • Gather photos of bathroom styles and details that appeal to you. Better Homes and Gardens displays a slide show of contemporary styles and Kasmar Publications posts pictures of luxury bathrooms.
  • Even if you want to do some of the work yourself, most experts recommend hiring a licensed and certified plumber. Ask family or friends for recommendations, or search for referrals from the Plumbing-Heating-Cooling Contractors Association[6] and the National Electrical Contractors Association[7] .
  • If you want a remodeling contractor to handle all aspects of your bathroom addition, the National Association for the Remodeling Industry provides an online booklet with tips[8] for hiring a contractors, as well as contractor referrals[9] .
  • Check whether a contractor is licensed[10] in your state, and if there are any complaints with the Better Business Bureau[11] . A written contract should include a detailed outline of the work required and materials used, dates within which the project will be done, and a payment schedule.
post E-mail post Post   Comments (3)
CostHelper News


3 Ways to Have the Government Pay You Back for Your Energy Efficient Upgrades
Any renovations or upgrades made to your home this year that included energy-efficient appliances could be eligible for some federal energy tax credits. But it's not just appliances. || Posted December 9 2013


7 Lesser-Known Discounts for the 50+ Crowd
As they age, members of the Baby Boomer generation don't like to admit that they're senior citizens, but they love getting discounts. It's kind of a quandary, because some of the best deals available are reduced prices for older folks. || Posted October 21 2013

‣ All CostHelper Blog Posts


What People Are Paying - Recent Comments
Bathroom Addition Costs
Amount: $4,300.00 total
Posted by: Frick in Madeira Beach, FL.Posted: December 28th, 2013 07:12AM
Square Feet: 52Contractor: Self
Built a full bath in the "Florida basement" space from the garage area of my three story home. Building out masonry walls, tapping into the sewer and water, running electrical, fitting out a two head shower, tiled walls and floor, and AC ducts.
Was this post helpful to you?   yes     no Report prohibited or spam
Would like to add upstairs bath - What is the cost???
Amount: $5,000.00 total
Posted by: JT in Minneapolis, MN.Posted: April 26th, 2012 09:04AM
Square Feet: Approx. 40Contractor: Self and outside
I would like to get and estimate of how much it would cost to add a master bath to the upstairs of my 1.5 story house. Using existing floorspace, framining myself and installing pre-fab vanities, sinks and showers. Hiring for outside plumbing. Bathroom would be about 10-15 feet from existing plumbing a floor below. Any thoughts on how much this will run me???
Was this post helpful to you?   yes     no Report prohibited or spam
Add (1) full bath and remodel (1) 1/2-bath
Amount: $6,000.00 total
Posted by: C. T. in Indianapolis, IN.Posted: August 1st, 2009 07:08PM
Square Feet: 120Contractor: self
To break concrete floor and install drainage and vents I hired a plumbing company, which was $4500. I did the remainder of work including electrical and other.
Was this post helpful to you?   yes     no Report prohibited or spam


 

Comment On Your Experience With a Bathroom Addition
 
Subject:  *
Amount Spent:  * total
Square Feet: Contractor: 
Comments: 
Purchased:  Year: 
City:  * State:  *
 
Information about you:
Email:  * Email addresses are not displayed.
Name:  This is the name we'll display with your post.
me on this computer
*=required field.
 



External Resources:
  1.  www.city-data.com/forum/raleigh-durham-chapel-hill-cary/259914-adding-bathroom.html
  2.  www.remodeling.hw.net/2009/costvsvalue/national.aspx
  3.  www.thisoldhouse.com/toh/photos/0,,20202296,00.html
  4.  www.remodelormove.com/
  5.  www.amazon.com/s/ref=nb_ss_gw?url=search-alias%3Dstripbooks&field-keywords=adding+a+bat...
  6.  www.phccweb.org/applications/ContractorReferral/search.cfm?navItemNumber=532
  7.  www.necanet.org/find-a-contractor
  8.  www.nari.org/pdf/selectremodpro.pdf
  9.  www.nari.org/search/address/
  10.  www.contractors-license.org/
  11.  search.bbb.org/
More Home and Garden Topics
Check Out All Costs for Home and Garden How Much Does Garden Service Cost? How Much Does a Kitchen Remodeling Cost? How Much Does a Propane Tank Cost?

Search Thousands of Topics on CostHelper.com



Today's Featured Cost Articles

About CostHelper
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.

CostHelper Community
Brazillian Knot
Paid: 275.00
I tried brazillian knot for the first time and it hurt soooo bad!!!! Never Again!!! I had to cut them out right away. I kept them in for 2 days and then that was it, I could not take it... [more]
-annejevas2
Hair Extensions Cost
Sleep Study
Paid: 6400.00
Wow what a rip off will never go to that hospital again. I will go shopping for my next procedure... [more]
-
Sleep Apnea Treatment Cost
Cost of a deck
Paid: 5000.00
I was wondering if I paid to much for my 10X25 rectangle deck with treated wood? It has 3 stairs about 3 feet in width and 25 feet of railings... [more]
-LB
Deck Cost
Rabbit costs
Paid: 10.00
The dwarf cross, Sunday(male, neutered) was a CL freebie. Womans cat brought 2 approx 3-4 wk old babies, dont know where mother was. He was soooo tiny, dehydrated, & a bit cold... [more]
-shawnna Stone
Rabbit Cost
MRI FH Outpatient/CT FH Outpatient
Paid: 319.80
MRI Amount billed by hospital $9025.82!!!!!January 2014CT FH- outpatient - billed $5146... [more]
-Janie D
MRI Cost
Is my pricing high?
Paid: 1400.00
Just saw the dentist today. Informed I am in need of two extractions and two bone graphs. My insurance does not cover bone grafts... [more]
-
Dental Bone Graft Cost