Hi, I spent a year on plans to enlarge the kitchen and add a 3 season porch over a basement . Scope increase led to plans for a 12 x 30 addition on the back of the house for the kitchen and family room (would need a new support beam). Plans for an adjacent 3 season porch and unfinished basement behind the dining room grew to 18x14 feet. Middle of 3 competitive bids was $160k NOT including cabinets, appliances, and installation. (I think about 60k of that was for the sunporch/basement). Also does not include the window costs for the 3 season porch. This was a shock to me but I notice that some posters here are really good at projecting costs (LWO, Hollysprings, among others).
Excited about prelim work with new architect who is suggesting a 5x18 foot bumpout just for the kitchen/eating area (no new support beam needed), either cantilevered or on a crawl space. sunporch and basement dimensions would sty the same . Is that enough information to estimate the change in costs with the preceding information?
Electrical and HVAC has already been upgraded to handle the new addition so no worries there.