For an owner builder, subtract the General Contractorâ€™s markup and it drops to $115 per sq ft.
Keep in mind that this only a rough estimate created by a cost estimating algorithm.
For more details and to view the home plan follow the reference link.
After working through the plans with a few different builders, walking the lot a number of times, and then GETTING REFERENCES of previously built homes, I was able to determine that the cost varies significantly with each builder.
You mentioned you have a family member that will help as a GC. That's very good. However, I would recommend hiring a local builder for a small fee that has access to reliable subs who know how to build a quality home. The right materials installed incorrectly is worse than low quality materials installed properly in most cases.
This might not answer your original question, but I'm sure that this information is what will help you make the best financial decision and build the home you and future owners will enjoy for many years. Sometimes people take short cuts without thinking of the re-sale variables.
You should be within the $100/sq foot to $110/sq foot cost using standard building materials. If you would like references of local builders with good references, I'll be glad to provide that. Just call me or email me for more information. http://www.pauldecarlo.com
It really depends on the builder. If you have a lot you should be between 65 and 85 dollars per square foot. This would be on the low side for the better builders but right now they are looking for work so you have leverage. Are you going to be the GC on the job or do you want the builder to be the General also?
Some of the larger developers and builders in the Birmingham area are able to achieve about $100 per finished square foot on a slab home when building in mass. They typically buy their materials in bulk.
A custom home could be built with many upgraded features such as 2" x 6" walls instead of 2" x 4" walls, granite counters, ceramic tile in kitchen/baths, and so forth for about $125 per square foot.
Many other variables make this a hard question to answer. Feel free to give more specifics about where you plan to build, what builder you are using, the lot's grade, foundation, and other amenities you plan to put into the home and I will be glad to help you price this out.
Sorry to be vague, but this is a tough, yet commonly asked question.