Pre-Sale Roof Inspections: A Guide for Buyers and Sellers

A roof can cost more to fix than a kitchen. That is why a roof look belongs in the first week of escrow, not the last. Here is what a thorough one covers:

• Age and material: how old the roof is and what rated life the manufacturer gives
• Surface condition: curling, cracking, missing pieces and bare patches
• Flashing and penetrations: chimneys, skylights, vents and wall joints
• Gutters and drainage: whether water leaves the roof cleanly
• Attic: stains, damp insulation, daylight, ventilation
• Decking: soft or sagging boards, seen from above and below
• Layers: how many roofs sit on top of each other

Where a general inspector stops and a roofer starts

A home inspector looks at the whole house in a few hours. The roof gets a quick pass, often from the ground. That is fine for flagging a problem, but it rarely prices one.

A roofer walks it, probes the flashing, looks at the attic and writes a scope. If the home inspector flags the roof, the next call is to a roofer. Our roof inspection walk is the same whether the roof is yours or belongs to a house you want to buy, and the report lists what is urgent, what can wait and what to ask the seller.

How to read what we find

Findings are not all equal. This table sorts the usual ones:

California's residential code does not allow a new roof over one that already has two applications, or over tile. If your roof already has two layers, the next job is a full tear-off, which costs more than an overlay would.

Older homes, older roofs: Pasadena as an example

Roof age and house age are tied. Census ACS puts Pasadena's median home at 1961, so a good number of homes there have seen at least one re-roof already. Bungalows and Craftsman homes have wide eaves, exposed rafters and valleys that hold water if the flashing goes bad.

When we look at a roof on an older house, we check what lies under the visible layer. If you are buying in Pasadena, ask about past roofs, past permits and any historic rules that could limit what you can do. Tile roofs add a layer of questions, since the tile can outlive its underlayment by years.

Questions to put to the seller and their agent

Some answers sit with the seller, and they cost nothing to ask for:

• When was the roof last replaced, and by whom?
• Are there invoices, permits or a roofing report on file?
• Has it ever leaked, and where?
• Were repairs made over the years, and are there photos?
• Is there any warranty on the roof that transfers to a buyer?

Get warranty terms in writing. A transfer clause, a time limit or a registration step can void it, and the seller may not remember the details.

Sellers: what a roof report does before you list

Sellers get the same value in reverse. A roofer's report before listing lets you fix a loose flashing or a few cracked tiles on your terms, rather than discount the whole house for them. It also gives a buyer's inspector fewer unknowns.

Collect what the roof has on file: past invoices, permit records and photos of any repair. In the City of Los Angeles, LADBS generally calls for a permit or a certificate of compliance for a re-roof, and other cities run their own building departments. Ask your agent what to disclose about known leaks, and keep the paperwork where a buyer can see it. If a roof permit was part of a past job, the record helps the sale.

Should you waive the roof inspection contingency?

In a hot market, buyers sometimes drop contingencies to make an offer stronger. The roof is the worst one to give up blind. It is usually among the most expensive parts of a house to replace, and Angi estimates roof replacement in Los Angeles at roughly $4 to $12 per square foot, averaging about $8.60, or about $17,200 for a typical 1,700 sq ft home (accessed November 2026). Your own roof's price will differ, and ours comes in writing after we see it.

If you do want a tight offer, there is a middle path. Book the roofer before you write the offer, even a quick pre-offer look at the roof and attic, so you go in knowing the bill. Whether to waive anything is a call for you and your agent, but a number beats a guess.

Using the report in negotiation

A roof report works best as a number and a reason. These steps keep it clean:

1. Order the roofer's visit during the inspection period
2. Get a written report with photos and a scope
3. Ask for a repair price and a replacement price from the same visit
4. Give both to your agent with a specific request
5. Decide your limit before you hear the seller's reply

Treat any "roof certification" as a document whose terms you read. What it covers, for how long and for whom varies by who writes it, so get those terms in writing. A Van Nuys reviewer describes our team documenting roof damage for an insurance claim, which is the same habit: photos, measurements and a written scope.

What working roofers weigh when a buyer asks "is the roof fine?"

We would rather give a plain answer than a comforting one, so here is how a roofer reads a house you do not own yet.

Age matters, but condition matters more. A twelve-year-old shingle roof that has baked in the Valley sun may be closer to the end than a twenty-year-old one on a shaded north slope. Rated life on the box is a guide, not a promise.

Trade-offs are real. A repair is the cheaper path on a roof with useful life left, but it can hide that the whole surface is tired. A replacement fixes the unknowns, and it costs the most. Our guide to roof repair versus replacement walks through how that call is made.

What we cannot see matters too. A roof can look clean from the street and still have soft decking underneath, which only shows from the attic or once the covering comes off. So any inspection is a snapshot, and a good report says what it could not confirm. If a roof replacement is likely in the first few years, plan for it in your offer budget now.

Insurance, asbestos and other surprises

Insurers consider roof age and condition when they decide whether to write or renew a policy. Ask your insurer what they require before you close, not after. California's FAIR Plan is a basic fire policy, and wind can be added to it.

Some older roofing materials may contain asbestos. If we see signs of it, we recommend lab testing before removal. SCAQMD Rule 1403 sets survey and notification rules for regulated work, so raise the question early.

A Van Nuys reviewer describes drone photos of the roof work sent as it happened, since they were not about to climb up there themselves. For a house you do not own yet, a photo record helps you ask better questions. Talk to a roofing contractor in Los Angeles who will tell you plainly what is wrong and what is not.

Next step before you close

If a house is in escrow and the roof worries you, call (209) 563-1278 and we will set the earliest visit we can. Tell us the address area, the roof material and how long your inspection window runs, and send any listing photos.