Siding is a big, infrequent purchase — most homeowners do it once — which makes it easy to under-scope without realizing it.
What a complete estimate covers
- Material and brand named specifically — vinyl, fiber cement, and engineered wood siding vary widely in cost and lifespan.
- House wrap or moisture barrier replacement — this is the layer that actually keeps water out of your walls, and it's easy to skip if the old siding is just being covered rather than removed.
- Full removal versus installing over existing siding — installing over old siding is cheaper but can trap moisture and hide existing damage.
- Trim and flashing around windows and doors, done fresh rather than reused.
- Warranty for materials and for installation, which are usually separate.
If a quote doesn't mention removing the old siding at all, ask directly — it changes both the price and what problems might be hiding underneath.