What Roof Replacement and Repair Cost in Los Angeles

Composition shingle: roughly $9,000 to $25,000

This is the volume material across the county. You see it all over the Valley and the South Bay, and on the 1950s tract stock in Torrance. Most jobs land in the middle of that range. What pushes a job to the top end is a second or third layer to tear off, a steep or cut-up roof, decking that turns out to be soft, or a hillside street where everything gets carried.

Architectural shingle costs more than three-tab and lasts longer, which is usually worth the difference.

Tile lift and relay: roughly $12,000 to $30,000

On a Spanish or concrete tile roof, the tile works as a shell. It sheds the bulk of the rain and takes the sun, but it isn't what keeps water out. The waterproofing is the underlayment underneath, and that's what dries out and splits. Tile lasts fifty years or more. The underlayment rarely gets past twenty-five or thirty.

A lift and relay takes the sound tiles off, strips the old underlayment, lays new, and puts the same tiles back. You keep the expensive part, at roughly half the cost of starting again. If someone quotes you new tile without first checking whether your existing tile is sound, ask why.

New tile throughout: roughly $25,000 to $60,000 and up

Justified when a real share of the tiles are cracked or the profile is no longer made, and unavoidable on a new build. The range is wide because the tile is: a standard concrete S-tile and a hand-made clay barrel are not in the same world. On a designated historic property in Pasadena, matching the existing tile costs money before anyone climbs a ladder.

Flat and low-slope: roughly $12,000 to $30,000

TPO and other single-ply membranes, modified bitumen, cap sheet. Common on mid-century houses, hillside moderns, duplexes and small apartment buildings. Drainage work adds to that and is money well spent, because a membrane over a roof that ponds fails early no matter what it cost. It means adding or moving drains and scuppers, and building crickets so water goes somewhere instead of sitting.

Plenty of LA houses are a mix: tile at the front, flat over the back addition. A good quote prices the two separately. If yours doesn't, ask for it broken out. Commercial and multi-unit work is different. See commercial roofing. On a flat roof that is still dry and sound underneath, a roof coating is the other option to price.

Standing seam metal: roughly $20,000 to $40,000

Uncommon on ordinary LA housing stock, but it shows up on hillside moderns, on additions and increasingly on fire-zone rebuilds. Steel sits at the lower end, aluminum higher. Near the coast, pay for the better metal and stainless fasteners. The cheap galvanized version will rust here inside a decade, and you'll have paid twice.

Solar removal and reinstallation: roughly $4,000 to $10,000

Panels have to come off before a roof can be replaced and go back on afterward, and that's a separate cost on top of the roof. If the roof is fifteen years or older, do the roof before the panels go on, not five years after. If you already have panels on an aging roof, price both together.

In a high or very high fire hazard severity zone, meaning the foothills, the canyons, the Palisades and Eaton burn areas, the California Wildland-Urban Interface Code applies. It changes the specification before it changes the price.

The requirement is a Class A roof assembly, not a Class A shingle. The rating is earned by the whole build-up: the deck, the underlayment, the covering, and how the edges, valleys and penetrations are detailed. A Class A shingle over the wrong underlayment isn't a Class A assembly, and an inspector will say so. Chapter 7A also covers ember-resistant vents and non-combustible gutters, since embers landing in a gutter full of dry leaves are a common way a house catches.

The cost sits in the build-up more than the surface material: fire-classified underlayment or cap sheet, corrosion-resistant valley metal, listed ember-resistant vents, metal gutters, enclosed eaves. Ember-resistant vents alone commonly run a few thousand dollars across a house. Ask for those line-itemed, so you can see what the assembly costs against the covering.