A 3-tab asphalt shingle roof on a typical Artesia house runs $10,000 to $21,000 installed, based on $500 to $700 per square for a roof of about 25 squares, the city's typical size.
Why the range is $10,000 to $21,000 and not one number
The spread comes straight from the per-square price, $500 to $700, multiplied across a roof size that itself varies. Artesia roofs in this model run 20 to 30 squares, with 25 being typical. A 20-square roof at the low end of pricing lands near $10,000. A 30-square roof at the high end pushes past $21,000. Nobody can collapse that into a single figure honestly, because the two inputs move independently depending on the house and the crew bidding it.
This is also the cheapest covering that still qualifies as a roof. Expected life is only 15 to 20 years, shorter than other asphalt options, and fewer and fewer crews will install 3-tab at all. That matters for the quote itself: a smaller pool of willing installers in Los Angeles County can mean less price competition, not more, even on the cheapest material.
Where these numbers actually come from
These figures are modelled estimates, not quotes and not an average of jobs done in Artesia. According to the cost method for Artesia, the model starts with a national base price and multiplies it by a regional index of 1.349 to account for labor and material costs specific to this area. That index is why the per-square price lands at $500 to $700 instead of a lower national figure.
A model can't look at a specific roof. Anyone giving a real number has to see the house. Use the $10,000 to $21,000 range to know whether a quote is in the right neighborhood, not as a quote itself.
What actually pushes a quote toward the high end
Three things move the number most, and none of them are the shingle itself. How many old layers come off the roof matters because tear-off labor adds cost that has nothing to do with the new covering. How much decking underneath has gone soft matters because rotten plywood gets replaced board by board, and that's billed separately from the roofing line item. And whether a truck can actually get close to the house matters because material has to move from the street to the roof somehow, and a long carry costs labor hours.
Ask any contractor bidding the job to walk the roof and tell you, in writing, how many layers they expect to remove and what they charge per sheet of replacement decking if they find soft spots. Those two answers predict where in the $10,000 to $21,000 range the final bill lands better than anything else you can ask.
Is 3-tab the right call for a roof that lasts 15 to 20 years
Fifteen to twenty years is a short window for a roof, and it's the tradeoff for the lowest price per square in asphalt. If the house is going to be sold inside that window, or if the owner plans to re-side or re-roof again soon regardless, the shorter life may not matter. If this is meant to be the last roof job for a while, the math changes.
Ask directly whether the crew bidding the job still regularly installs 3-tab, since the fact that fewer and fewer do it is worth knowing before committing. A contractor who rarely installs a material has less practiced judgment about it than one who installs it often. Get that answer before signing anything, not after.