What Is a Pre-Drywall Walkthrough?

A pre-drywall walkthrough happens after framing and the plumbing, electrical and HVAC rough-ins, before insulation and drywall cover them. It's your one chance to see inside the walls, so it's worth doing, ideally with your own inspector.

Is a pre-drywall inspection worth it?

Yes. I've stood in a lot of framed houses, and this is the moment I'd least want a buyer to skip.

Once insulation and drywall go up, the framing, wiring, pipes and ducts disappear for good. InterNACHI makes the point plainly: fixing problems after a home is finished is difficult and expensive. Before drywall, many of the same fixes are quick.

There are two versions:

• A builder walkthrough. Many builders walk buyers through the home at this stage to review the layout and what's been installed.
• A private inspection. Your own inspector looks at the work on your behalf. Ask your builder if outside inspectors are allowed at this stage and how to schedule one.

What happens during a pre-drywall inspection?

InterNACHI says the inspection happens after the foundation, framing, windows, doors and plumbing and electrical rough-ins are in, but before drywall. Some inspectors also look after insulation, which shows how well that was done, though insulation can hide other things.

Inspectors commonly check:

• Framing: wall studs, floor joists, notches and holes cut in framing, and blocking where extra support is needed
• Structure: footings, pier pads, crawl space, and missing metal clips or connectors
• Water: window and door flashing, and waterproofing
• Plumbing: pipe placement, and a drain pan under the washer location
• Electrical: wiring and junction box placement, and whether each room has enough outlets
• HVAC: duct and register placement
• Fire safety: firestop material where it belongs

InterNACHI also recommends photos and video. I'd take your own too.

What to check yourself

Even if you hire an inspector, walk the house with your own list:

• Outlets and switches where you'll actually use them. Think about your bed, desk, TV and kitchen counters.
• TV and cable locations, and blocking in the wall if you'll mount a TV.
• Blocking for grab bars, shelves or heavy mirrors.
• Ceiling fan locations with the right support.
• Your selections. Make sure what's roughed in matches what you picked.

Take photos of every wall in every room. Years from now, when you want to hang something heavy or run a wire, you'll know exactly where the studs and pipes are.

How long does a pre-drywall inspection take?

Usually a few hours, depending on the size of the home and the inspector. A builder walkthrough is often shorter. Plan for enough time to walk every room without rushing.

Timing matters

The pre-drywall window is short. Drywall often follows insulation within days. Ask your builder:

• When do you expect framing and rough-ins to be finished?
• How much notice will I get to schedule an inspection?
• How do you handle items the inspection finds?

Who's writing this. I sell new homes for D.R. Horton at Collins Ridge in Hillsborough, so I represent the builder, not you. This guide is general education from my years on job sites and in sales. It isn't legal, tax or lending advice, and it doesn't describe any specific home, price or incentive. Check the sources linked below, and talk with your own lender, agent or attorney before you decide.