Home Addition Cost - Buyer Experiences and Price Information

I live in Fremont,CA.
In between gable end and my neighbor fence have huge space(18ft) which I currently have plastic shed.
I want to extend living room and want to have one room.
it'll be looked like following drawing.
Imagine square is my current house, and * is fence, and || stucco wall, | is drywall.
Right side will be my addition
current ---------> addition
+======|| * +=============|| *
| LR || * | LR || *
| ----||<18ft>* --> | ----+-----|| *
| kitch|| * |kitchen| room|| *
+======|| * +=======+=====|| *
backyard backyard
So, it's pretty simple addition from construction stand point of view since it is on the ground level and it is same direction in that of existing ridge board, no plumbing involved and a few electrical work.
In the room, I want to have ceiling light, window(of course) and sliding patio door out to backyard, and storage room. Of course a couple of outlet should be available to function as a room to use TV, PC...
In the extended living room, I want to have one ceiling fan.(there is already one but maybe it's better to have one more)
Any approx cost idea from foundation to roof finish? one of guy told me it'll be in between 200~300 but considering the simplicity of work, I think it's a bit pricey.

I have a 20 by 30 deck that I would like to convert into a family room. No closets or anything. All windows and hardwood floors. What could I expect to pay for this.

Considering a 2 nd floor addition to extend a bedroom out over afirst floor kitchen. Is 10 gs enough considering all I want is a box with a roof?

As a contractor, who has been building for over 30 yrs., the gentleman was correct it matters where you live and the old saying " you get what you pay for". When your not a fly by nite, slap it up and over, temp. contractor, it cost money to run your buss. correctly,, i provide a very good warranty and quality building.your safety and quality in building come 1st.Go to my website and see what i have to say about unlice,unskilled,undocumented so called contractors. If your going to do something do it right, contractors are not getting as rich as you think, mike giddings giddings contracting
www.gcbuildandremodel.com

We needed a game room and two new bedrooms built onto our house and after calling J&B Construction 573-201-5064, we received exactly what we were looking for, and more. They were there when they said they would be, they worked very hard and fast to get the work done on time, [actually 3.5 weeks ahead of schedule] their work was very high quality and very great price. Perfect all around transaction. J&B Construction 573-201-5064 is the only company we will ever call for our building and repair needs!

For the inquiries about pricing per/sqft. Only after the estimating against the plans is complete, you can come up with a price per/sqft. Most contractors reduce the final number to "cost per/sqft". This number can be shared with the customer or not. Many times the customer will arrive at this calculation on their own. A builder would be taking a gamble by giving a sqft price without doing the pencil work. The interior finishes alone could run $50/up per/sqft. So, with this in mind it is better for a consumer to have a budget before starting a project. This will help determine the needs over the wants.

How much would it cost per sqft if I need to add roof as well? Having DIY as well as lic contractor's estimates would help. Someone who has already done a similar project may please share the expenditure info.

No licensed contractor in his right mind will give a price by sq footage. Local pricing will vary from region to region. Save big by doing it yourself. However, don't confuse DIY with hiring a legal licensed contractor who will service and warrant his work. He needs to make money to stay in business. He is not obligated to work for free as every unreasonable person would like. To find out if there is value in the proposal price go to the local assessors website and find out the latest valueation for the property improvments and get the cost per foot for what is already there. Any new footage and footage for remodel are need to be factored in. Remodeled footage price can be as much as the additonal space but must be figured appropriately. If the proposal price is less than footage price of existin you may have a great deal depending on what is done. It would be a good value. It is not free even if it is bonus space. Many who have commented here have no grey matter between the ears. So sad. I had a gentleman call requesting price for 250SF addition. I told him to send me the plans to bid. Possibly, it could be a low as $25000 but costing would reveal true cost. Turns out it was over $37,000 and the details of construction were still not nailed down. The roof was over 650 sf and impacting the cost. The addition would cost approx. $148/ft, The assessed value of the existing house was $250 for a home almost 50 yrs old. I told the man the proposal was a bargain considering what he had already given for an old house and I also said that since he was an engineer he should be able to understand numbers and know the truth of what I said. He still wanted something for nothing. Ridiculous reasoning.

Most of your older homes have very small master baths. you can recoup most if not all of your cost on resale when it comes to kitchen and bath. However you will be going from a 4 bedroom to a three if you use that space.but you wont have to expand by adding on. If you would like I could have a look at it. texstarservices.com

most room additions in houston will start about $110sf. they will go up depending on what goes into the room such as custom wood work and such. You can allways find someone for less but you will get what you pay for. I have been doing this for over twenty years now and I am very knowledgeable about services and all the cost.

Newbie, I am a Lic. Contractor that's been doing additions and remodels from San Francisco to L.A prices varies. You can expect to send a base price of $90.00-$120.00sf for your addition. This cost will increase based on your finish/upgraded materials. Do your homework, all Building Contractors are not the same.

We bought a house that was built in 1979, and we love all of it except the tiny!! masterbath which has that motel look with the vanity open to the bedroom. The house is 2800 sq feet, and it has 4 bedrooms. We are wondering about initial cost of (as well as resale recoup) either converting the 4th small bedroom adjacent to master bedroom to a larger spa bath with additional closet space, or adding an addition to the back side of the master extending the existing bath out. Our lot is over half an acre, so yard space is not an issue. We do not use the bedroom except for storage. Anyone have any advice?

i would like to know about how much it would cost to add a master bedroom 300 square feet and a 70 sq foot bath and 30 sq ft closet. this would include 3 windows.

The amount I have put in is a wild guess!
Okay I am in Benicia. We would like to add a 2nd floor to an existing modest 900 square foot house. The house is currently 3 bedroom 1 bath with wonderful views. We want to add a master bedroom suite on top floor with jacuzzi bath taking advantage of the corner views plus an additional small guest bedroom and shower/bath. We want to do it right,(permitting etc) but don't have a giant budget. what would the diff be if we just did a big old box upstairs with modest bath (maybe 300 sq feet?) vs adding the 2 bedroom 2 baths as described? Thanks! We are newbies and have no clue.

Added a 20X20 Master Bedroom, 18X12 Master Bath w/ 29' walk in closets on both sides, a private 4X4 Master bath toilet (enclosed), one 10" double bowl and 5' single bowl vanity, 5X5 Sliding glass door steam shower with four body sprays and pan head, and a jaccuzi tub. Added a 7X11 laundry room, 8X11 pantry, 11X13 Study, 15X16 Family room with private 4X4 Toilet, 13X18 bonus room and a two 3/4 car garage, part of which is a 20X6 lawn/tool storage room. All work with the exception of grading, foundation, load bearing framing/exterior sheathing, concrete, and drywall finishing accomplished by homeowner. Current prices in our neighborhood are at $100 dollars/ft. Realistic pricing as this is now the biggest in the neighborhood is $75.00/ft. Value improvement is approximately 152K which is about what it would have cost to have a General Contractor do it. So in Tennessee, plan on spending between $75 to $95 dollars per ft. if using a contractor. As always, the more that you can do yourself, the more you save/make!