A new roof in Avalon runs about $13,000 – $29,500 installed on architectural asphalt shingle and $24,000 – $62,000 on concrete tile, for the 26-square roof that is typical of houses here. That is a national base cost multiplied by a regional index of 1.324 for this area, with the full range by covering set out below. Most houses here fall between 20 and 31 squares.
How the figures are worked out, and what they are not
Worth being clear about what this can and cannot tell you. A typical single-family roof in Avalon works out at about 26 squares in this model, with most houses between 20 and 31 — a square being one hundred square feet of roof surface. These are modelled figures, not quotes: a national base cost multiplied by a regional index of 1.324 for this area. Nobody can price a roof without looking at it, and the model does not pretend to. Which is the honest position: useful for sanity-checking a quote, useless as a quote.
The things that make two quotes differ
Two quotes for the same roof can differ by half, and it is almost never the shingles. Structural repair with decking and framing in Avalon: $3,500 – $11,000. Long-running leaks get expensive because of what they soak, not what they break.
Ridge and intake ventilation upgrade in Avalon: $582 – $2,296. The cheapest thing you can do to make the next roof last its full life. Tear-off, per layer per square in Avalon: $150 – $276. Two old layers costs roughly twice what one does to remove and tip. Rotten decking, per sheet replaced in Avalon: $100 – $200. Only found once the old covering is off. Always budget for some. Ask for each of those as a separate line. A quote that itemises them is a quote you can compare.
The housing stock, and what it means for a roof
What is on the roofs in a town is mostly a function of when the town was built, and that is knowable rather than guessable. Avalon has a population of about 3,267 across roughly 1.1 square miles of land, which works out at about 3,000 people per square mile. The coverings that actually turn up on houses in Avalon are asphalt shingle, concrete or clay tile, metal, and low-slope and flat sections.
Tear-off, layers and what is underneath
Nobody can price a re-roof properly without knowing what is coming off, and often nobody knows until it starts. CALGreen requires 65 per cent of nonhazardous construction and demolition waste to be diverted from landfill — but that chapter applies to additions and alterations that increase a building's conditioned area, volume or size, and a straight re-roof does not. So the state mandate generally does not reach a re-roof. A new covering may not be laid over the old one where there are already two applications of any type on the roof, where the existing roof or covering is water-soaked or has deteriorated enough that it is no longer a sound base, or where the existing covering is slate, clay, cement or asbestos-cement tile. In those cases the roof comes off to the deck.
Which material makes sense here
There is no best roofing material. There is a material that suits this climate, this housing and this budget, and the local half of that is the half that gets skipped. Avalon sits about 25.9 miles from the Pacific. Far enough inland that salt is not the thing setting the replacement clock here. Marine layer damp and slow drying in Avalon: Slopes that never get direct sun stay wet for hours after the fog burns off, and that is where moss, lifted shingles and soft decking start. The right answer is usually the boring one, chosen for a local reason.
About coverage in Avalon
This site covers Avalon and the towns around it. It is a quote-matching service rather than a roofing company: you describe the job once, and up to three independent local contractors get in touch with their own prices. Nobody here climbs a ladder.