We need a lot more information to answer this question. There are a lot of variables that will affect pricing. If you can describe your project in detail you may get a more helpful answer. Shooting from the hip, $50,000 ballpark would be my guess without knowing any details.
You are looking at $75,000-$85,000, assuming the full bath and other space is built over a crawl foundation.
85k with medium grade finish materials and medium complexity roof tie-in and standard flat grade for your foundation
Great question, Contractor Home Builders, Inc. The simple answer (for a ballpark estimate) is to use $150/ sq. ft. for an addition. Based on the square footage mentioned in your question, the ballpark estimate would be $74,850.
However, there are 2 types of costs associated with additions: fixed and variable.
Fixed costs would include items such as concrete, framing, rough electrical, rough plumbing and HVAC. In other words, these are costs that the builder can estimate with little margin of error.
Variable costs require a budget. These are known as finish items or a finish budget. These items include: vanity, flooring, faucet, trim, doors, etc. For instance, a nice 36" vanity with top (from a big box store) will cost $500. The faucet will cost about $100. But, a nice 36" vanity with top (from an online retailer like Overstock.com) could easily cost $1,200. That is a $600 difference for one item. So, apply that type of variability to all of the finish items in an addition, then the builder and homeowner could have a significant price gap. But, this only applies if the builder is purchasing the finish material. If the homeowner is purchasing the material, then the labor would be a fixed cost to install the items, and the homeowner could spend as much as he or she would like to on the finish items (because those items are not included in the GC’s proposal).
When beginning the process for doing an addition to a house, you begin with a set of plans. Its very hard to give a price per sq ft for an addition without really seeing a set of plans. Every city has different requirements so plans can vary between cities. Room additions in general usually range from approximately 120 per sq ft. up to 200 per sq ft. Then you have all the different finishes which can make the project more or less expensive.
This depends where the job will take place. Price per square foot is different depending on the city/town you are in. You should budget anywhere from $20,000 to $70,000. More information would help us contractors answer your question in better detail.
Good luck.
Hello
Additions costs typically start high for smaller square footage add ons, for example a small 120 sqft office addition with slab on grade could cost you approx $39,000($325 per sqft). When a single story new home build of 1500 sqft could be completed for approx $337,500($225 per sqft). Of Course with second story additions reaching the $500 per sqft range. Anytime you add in underground work for example DWV, electrical and water supply(allowable only to island cabinets in CA) your costs increase. With favorable site conditions a safe ballpark would be $80,000-$100,000. Ranges in cost usually occur due to finishes of exterior and interior, elevations, accessibility, engineering requirements, county permitting fees and in some cases State permitting fees. To get in a better ballpark, pictures and plans can always help you in receiving a more accurate estimate for your project costs.
Hope This Helps!
CJ