Step 8: Budget reality: what drives cost in an ADU or addition?

ADU and addition costs are driven by:

• how much new structure is required (conversion vs new build)

• plumbing complexity (bathrooms and kitchens add cost)

• finish level (durable basics vs custom/high-end)

• site conditions (access, slopes, utility runs)

• window/door packages and outdoor connections

A simple way to control cost is to:

• keep the plan efficient (reduce wasted hallways)

• avoid unnecessary structural complexity

• choose a cohesive, durable finish package

If you want accurate pricing for your property, schedule a consult: Contact / Start Project