How do you estimate a wood rot repair when you cannot see how far the damage goes?

The problem with guessing

Rot hides. A soft spot on the surface may be an inch deep or it may be the visible edge of a joist that has lost its bearing. Anyone who prices a rot repair from the sidewalk is guessing, and the guess is usually low, which is how homeowners end up with a job that doubles in the middle. Levi's background as a project architect and construction manager taught him that surprises are almost always a scoping failure, not bad luck.

Step one: probe everything you can reach

The first visit is a careful walk with a screwdriver, an awl, a flashlight, and a camera. Every post base, joist end, ledger edge, railing post, sill, and trim joint that could be involved gets probed, not just the one you called about. Rot follows water, so we trace the water: where it comes from, where it runs, and where it sits. That usually turns up a few spots you had not noticed, and it is far better to know now.

Step two: open what the probe points to

Probing tells you where the trouble is; it cannot tell you how far it goes inside framing. So before the scope is final, Levi removes what is needed to see: a few deck boards at the ledger, a section of fascia, a column wrap, a band of stucco at a balcony connection. This exploratory opening is a small, defined piece of work that is agreed to up front. On a second-story balcony we rebuilt, this is how the owner learned that the joist ends and ledger area were far worse than the railing suggested, before the repair started rather than halfway through.

Step three: write it down piece by piece

The scope lists each member and what happens to it: this joist replaced, these two sistered from the ledger past the damage, this post cut back and re-set on a standoff, this sill consolidated and filled, this fascia run replaced. It names the materials and the finish so the repair matches what stays. It states the water fix: flashing at the ledger, a crowned footing, a redirected sprinkler, a sloped sill. And it says what is being left alone and why. Photos of every area are attached so you can see what we saw.

If a pest inspection is part of the picture, the scope is written after the report, so the inspector's findings and the carpentry line up.

• Each member named with its repair: replace, sister, consolidate, or leave
• Materials and finish for every piece
• The water source and how it is corrected
• Photos of every opened area
• Pest inspection findings incorporated when applicable

Step four: handle the unknowns honestly

Even with exploratory opening, there are places that cannot be seen until demolition, such as the rim joist behind a ledger or the sheathing behind a sill. The scope says so. It describes what we expect to find based on what is around it, and it sets the rule: if something unexpected appears, work stops at that spot, you get a photo and a description, and nothing is replaced until you have agreed. No one wants a phone call like that, but it beats finding out at the end.

Why this matters to you

A complete scope lets you compare repairs on the same terms and understand what drives the work: how many members, how much opening and closing, what the water fix involves, and what finish is required to match. It also tells you what you are not getting. A quick patch that is priced low because it leaves rotted wood in place and skips the flashing is not the same job, and the scope makes that difference visible.

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