Bathroom Addition Cost

Bathroom Addition Cost

I will answer my own question- hopefully this can help others in my situation. We just completed our bathroom addition to our single family Victorian home by taking half of a large guest bedroom and converting it into a master bathroom. Our bathroom has bianco carrara subway tiles for the shower and a basketweave marble tile for the floors which are heated. We have a double shower with Grohe fixtures and a custom double vanity with Robern medicine cabinets. We also have a large stained glass skylight. The plumber had to dig in to the concrete garage floor to connect the new sewer line. We also added a tankless water heater that serves only the master bathroom. Finally, we added 4 new closets. All of this cost about $55K. I had to get many many many quotes (not the standard 3-4) before I found 2 contractors with reasonable quotes. Then I went and saw 3 similar projects each had completed and talked to the owners for reference. They both seemed great, so I flipped a coin and picked one. I highly doubt that I would have had a better bathroom had I picked one of the first 5-6 contractors who gave me 6 figure quotes (I couldn't have picked them anyway since we couldn't afford those prices).
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Bathroom Addition Cost

I’m looking for a general cost to add a bathroom and about 250-300 sq ft.The bathroom would be a 3 piece – toilet, stand up shower (tiled w/glass doors) and double vanity. It will be on a wall that has a bathroom/plumbing on the other side of the wall already. Also, the general cost to extend a bedroom out into the backyard of the house about 250-300 sq ft (I don’t think any electrical would need to be added, basically just shifting a wall back). The house has vinyl siding on the back. We are in the midwest, in Missouri. We would be doing most of the labor ourselves, besides construction/foundation and outside walls. In other words, we’d be purchasing/installing the toilet, vanity/sink, tile (but not shower) in the bathroom.Also, while we’re at it, how much money could we save drywalling/mudding/taping everything ourselves?These are hypothetical questions, I’m just looking for very general cost estimates. Nothing super fancy, but not absolute lowest grade materials either.Thanks!
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Bathroom Addition Cost

The easiest way to add a bathroom is to tie it into the existing plumbing, so if you can site the bathroom on the opposite side of an existing bathroom wall where the pipes can meet each other, your plumbing costs will be reduced for the new bathroom. This is particularly the case when it comes to the vent stack for toilets as it is expensive to install another one. Bathrooms on the first floor of a home that has a basement or crawl space can be plumbed more easily, whereas those on a slab foundation may require breaking into the concrete and compromising the soundness of the structure of your home. Adding a bathroom to a basement will require a special type of pump if it sits below the sewer line.
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Bathroom Addition Cost

Installing a new bathroom means installing new plumbing. It’s best to locate your new bathroom near existing plumbing. Otherwise, the cost of running new lines to your bathroom can dominate your budget. Sewer lines must have a specific grade to ensure drainage to the city lines, and certain lines have to be of a specified diameter to accommodate a certain volume of that drainage.
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Bathroom Addition Cost

Reply Cancel tyegul, Home Owner, 94117 Thanks for your response. Unless I see different responses from others, I’ll assume that “this is the way it is in SF”. I’m definitely not confusing bathroom remodel vs addition as my best friend just remodeled her bathroom in Ann Arbor, MI for 5K and they moved everything around. Also, my sister in law owns a 3 bed/2 bath house in Jacksonville, FL that only cost 125K (the whole house, not the master bath). Flag • Mon Oct 7, 2013
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Bathroom Addition Cost

tyegul, Home Owner, 94117 Thanks for your response. Unless I see different responses from others, I’ll assume that “this is the way it is in SF”. I’m definitely not confusing bathroom remodel vs addition as my best friend just remodeled her bathroom in Ann Arbor, MI for 5K and they moved everything around. Also, my sister in law owns a 3 bed/2 bath house in Jacksonville, FL that only cost 125K (the whole house, not the master bath). Flag • Mon Oct 7, 2013
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Bathroom Addition Cost

Thanks for your response. Unless I see different responses from others, I’ll assume that “this is the way it is in SF”. I’m definitely not confusing bathroom remodel vs addition as my best friend just remodeled her bathroom in Ann Arbor, MI for 5K and they moved everything around. Also, my sister in law owns a 3 bed/2 bath house in Jacksonville, FL that only cost 125K (the whole house, not the master bath).
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Bathroom Addition Cost

Remodeling a bathroom comes with many of the same requirements and considerations as adding a new bathroom. But there are differences, especially where electrical and plumbing are concerned. In a remodel, you don’t usually have have to install new systems, but an additional bathroom will require new lines.
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I did the GC myself. I’ve build a bathroom before in my old house and have gone through the permit process, so I figure I’d just do it again since I knew what to expect. Because I finished the upstairs, I could live in the upstairs while they worked on the downstairs. My other house had all the main bedrooms upstairs, and I was building a bathroom upstairs, so it wasn’t ideal. But, that bathroom construction only took three months.
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That’s one insanely awesome bathroom. Just bought my home 2 years ago. Only has one tiny awkward bathroom. It will be updated in a couple years. First the downstairs then kitchen. Baby steps. I agree, purchasing anything that has a short life bothers me. the shorter it is, the more it bothers me. That bathroom will last decades while looking great and adds huge value to the home that wont soon diminish. That car starts looking old by 5 years and seems ancient after 10 with most of its original value gone at 15 years.
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The number of bathrooms in a home can really make or break the home’s overall functionality for its inhabitants. But before you put your house on the market to look for a new one with that extra bathroom you’ve been dreaming of, you may be able to easily add a bathroom to your existing home — which will not only solve your problem, but will also up your property value. Here’s what you need to consider when adding a bathroom to your home.
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The great thing about adding a bathroom to your home is that it doesn’t typically require a lot of space. At bare minimum, you’ll need about a three-foot by six-foot space to add a half bathroom. If you require a shower, it will need to be a bit larger, and for a full tub even bigger (about five-foot by eight-foot). You can always go bigger than that if you have the space, but remember that the bigger the bathroom, the bigger the price tag.
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If your new bathroom will have a bathtub or shower, it’s important (and most often required) that it be well-ventilated. Ideally, the site of your new bathroom should have an exterior wall where a window can be placed or access to the roof for a skylight. If not, you’ll need to put a fan in the bathroom to help circulate the air and prevent moisture build-up – though this is always worth doing even if you do have windows in your new space.
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NAHB data suggest that an additional half bath increases a home’s value by 10.5%, but an additional full bath increases the value by 20%. However, that doesn’t mean you’ll recover the total cost of your remodeling investment. You’ll likely get back only about 52% of the cost of a bathroom addition project when you sell your home.
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Love your blog. This is my first comment. Great design. Heated anything in a bathroom is the best money you can spend. These construction cost differences between areas amaze me especially materials and permits! I am shocked when I hear renovation costs in NYC, LA, SF etc. In Ohio I was able to do an addition (325 SF) for 47k. Now I did do a lot of the work myself. New kitchen & first floor laundry. As for time, I’d be surprised if anyone can find a small contractor that ever gets a job done on time. If they get a call from their buddy and can do a small job that day and get cash they are not showing up on your project. My project took 6 months from ground breaking to occupancy. Cost – I always put a huge contingency line item in my budget especially when remodeling. You never know what is going to be behind the walls or what kind of mood the inspector will be in. If possible I always try and buy the materials for contractors to install to save on markups. Also don’t wait for the contractor to bring up delays, get a schedule from them and monitor it. If it’s taking longer than expected have a talk about it. Like you say don’t let them hold you hostage. Don’t fall for the pay a bunch of money upfront. I know way too many people that have been in small claims court trying to get deposits back.

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