How do materials selection, style and geometry of house affect cost?
A. I always begin by saying that the further one deviates from a simple rectangular geometry and either a pitched or hipped roof the costs will increase. Many bump-outs or wall projections affect the foundation layout, add perimeter surface, and make joining more time consuming and costly. A variegated roof with many intersections adds interest but also adds to the cost of flashing, cutting roofing material, and increases the odds and likelihood for leaks in the long term. Whether your roof is hot-mopped or nailed (for concrete or ceramic tile) affects cost; the latter method is cheaper but introduces hundreds of nail holes into the roof sheathing that in time, under the effect of wind conditions, will enlarge and allow moisture to penetrate. Added insulation in the walls cuts energy costs but is an up-front charge that may or may not be amortized throughout the ownership period of the home. If you are planning to move within 3-6 years then extra insulation beyond code minimums and thi
