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ADU Construction — Materials Guide

What Goes Into an ADU: Materials Overview

IronNest Construction — CSLB #1130134. Licensed general contractor serving San Francisco, the Bay Area, and Sacramento.

What Goes Into an ADU: Materials Overview

An ADU is a complete dwelling unit, which means it needs every system a full home has — structure, plumbing, electrical, mechanical, insulation, and finish. Here's what we typically specify.

LP SmartSide siding
Used for: Exterior cladding

Engineered wood with resin coating. Holds paint well, doesn't rot, and keeps ADU exterior maintenance minimal.

Mini-split HVAC (Mitsubishi)
Used for: Heating and cooling

All-electric, highly efficient, zoned. Required in many Bay Area cities for new construction under Title 24.

Tankless water heater
Used for: Hot water

Saves space, saves energy, and doesn't run out. Standard specification on all our ADU builds.

COREtec LVP flooring
Used for: Interior floors

Waterproof, durable, and comfortable underfoot. Practical choice for rental units that need to hold up.

We explain every material choice in our proposals. You know what's going into your home and why before any work starts.

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