How Much Does It Cost to Replace a Roof in California?

Average range: $12,000 - $20,000
Low
$10,000
Average Cost
$15,000
High
$50,000
(Replacing existing shingles with white solar-reflective architectural shingles on a 2,000 sq.ft. roof)

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Reviewed by Paula Reguero. Written by Fixr.com.

Roofing is one of the most important investments you will make in your home. A good roof helps protect your home from the elements while also raising its curb appeal. And if you live in California, your roof may have other requirements as well. With the Title 24 Building Energy Efficiency Standards, many parts of California will be required to use cool roofing materials beginning in 2022. Most of the popular roofing already used in California, including asphalt and architectural shingles, metal roofing, and tile roofing, are also available in cool roof options. With these different materials and the need for many parts of the state to have cool roofs, there is a wide range of costs associated with roof replacement in the state.

The state average cost to replace a roof is $12,000 to $20,000, with most homeowners paying around $15,000 to replace existing shingles with white solar-reflective architectural shingles on a 2,000 sq.ft. roof. This project’s low cost is $10,000 for replacing an existing 2,000 sq.ft. asphalt roof with a standard architectural shingle roof. The high cost is $50,000 to replace an existing tile roof with a cool reflective tile roof, making modifications to the roofing deck.

Cost to Replace a Roof in California

Cost of a New Roof in California
National average cost$15,000
Average range$12,000-$20,000
Low-end$10,000
High-end$50,000

Roof Replacement in California Cost by Project Range

Low
$10,000
Replacing an existing 2,000 sq.ft. asphalt roof with a standard architectural shingle roof
Average Cost
$15,000
Replacing existing shingles with white solar-reflective architectural shingles on a 2,000 sq.ft. roof
High
$50,000
Replacing an existing tile roof with a cool reflective tile roof, making modifications to the roofing deck

Cost of a New Roof in California by Size

Like most areas, one of the biggest contributing factors to the cost of a roof replacement is its size. Most are sold and installed by the square, which is equal to 100 sq.ft. The average cost range per square in California is $550 to $2,450 a square, depending on the material. Asphalt and architectural shingles cost the least, while tile and slate roofs cost the most. Metal roofs tend to fall in the middle, although new laws surrounding cool roofs are raising the costs of some materials and making others less desirable. These costs are higher than the national average of $350 to $900 a square. This is because of the popularity of materials like slate, tile, and metal roofing, the higher costs of labor in California than the national average, and the requirements for cool roofing materials raising costs slightly.

Below are the average costs to replace a roof of varying sizes in California and the national average costs for the same sizes.

Comparison of the Cost in California and the National Average Cost for Roof Replacement by Size

Comparison of the Cost in California and the National Average Cost for Roof Replacement by Size

SizeAverage Replacement Cost (California)Average Replacement Cost (National Average)
1,000 sq.ft.$5,500 - $24,500$3,500 - $9,000
1,200 sq.ft.$6,600 - $29,400$4,200 - $10,800
1,350 sq.ft.$7,425 - $33,075$4,725 - $12,150
1,500 sq.ft.$8,250 - $36,750$5,250 - $13,500
2,000 sq.ft.$11,000 - $49,000$7,000 - $18,000
2,200 sq.ft.$12,100 - $53,900$7,700 - $19,800
3,750 sq.ft.$20,625 - $91,875$13,125 - $33,750
4,500 sq.ft.$24,750 - $110,250$15,750 - $40,500

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Roof Replacement Cost in California by Pitch

While material and size are two of the biggest factors impacting the cost of your replacement, the pitch or slope can also have an impact. Pitch refers to how fast your roof rises for every 12”. A flat roof is between 0/12 and 2/12, while a low slope roof is between 2/12 and 4/12. Conventional slopes range from 4/12 to 7/12, while a steep roof is anything over 8/12.

In general, flat and low slope roofs use a different material, so they have different costs. A steep pitched roof often costs more because of the additional labor involved. Many residential homes in California have conventionally pitched roofs, while some modern homes may have flat or low pitched roofs. Very high pitched roofs are uncommon in Southern California but may be found in some Northern areas. Below are the average costs per square foot to replace roofs of different pitches in California, compared to the national average.

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Pitch

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Pitch

PitchAverage Cost per Sq.Ft. (California)Average Cost per Sq.Ft. (National Average)
Flat$3.50 - $4.50$4.50 - $7
Low Slope$3.50 - $4.50$4.50 - $7
Conventional Slope$5.50 - $24.50$3.50 - $9
Steep Slope$6.50 - $30$5 - $12

Flat Roof Replacement Cost

The average cost of a flat roof replacement in California is $3.50 to $4.50 a sq.ft. This is lower than the national average of $4.50 to $7 a sq.ft. for flat roof replacements. Flat roofs in California are normally either PVC or another white reflective membrane. This helps them meet the requirements for cool roofs. Some may be painted to help them meet the requirements, but because this does not last as long as PVC and other lighter membranes, it is seldom used.

Low Slope Roof Replacement

The cost of a low slope roof replacement in California is $3.50 to $4.50 a sq.ft. This is lower than the national average of $4.50 to $7 a sq.ft. Most fall into the same category as flat roofs. In fact, most flat roofs are not truly flat. They need some slope to help deal with rain and runoff. They use the same materials as a true flat roof. This means that in California, white PVC and membrane roofs are the most common materials.

Conventional Slope

The cost of a conventional slope roof replacement in California is $5.50 to $24.50 a sq.ft. This is higher than the national average of $3.50 to $9 a sq.ft. but mostly due to the materials used. In most parts of California, cool roofing materials need to be used to help keep energy costs down. These materials can be more costly than their standard counterparts. It is also common to see roofs made with slate and tile in California, particularly on homes located near the coast, which can also raise the average costs.

Steep Slope

The cost to replace roofing on a steep slope in California is $6.50 to $30 a sq.ft. This is higher than the national average of $5 to $12 a sq.ft. Very steep sloped roofs are uncommon in California. They are more likely to be found in the northern part of the state and are much more uncommon in the southern part. This is because they are most often installed in rural areas and in places that see heavy snowfall. California does not see heavy snowfall, but it has some areas in the north that are rural and see more rainfall than the rest of the state, where a steep roof may be found.

Cost of a New Roof in California by Material

While you can use any roofing material in California, not all materials will meet the new regulations regarding cool roofs. Most homes in California use one of five materials - asphalt/architectural shingles, metal, concrete, clay, or slate. Each of these comes in a wide range of styles, and most have options available for cool roofing, helping them meet the new regulations.

Asphalt and architectural shingles are used on the majority of homes in California, most particularly on those used inland. Metal roofs are a very close second and have been rapidly gaining in popularity, especially new materials like stone-covered metal and reflective metal roofs. Tile roofs made of both clay and concrete are also popular, particularly in Southern California and along the coast. They are often used with Spanish-style architecture found in these areas. Slate is the least often used of the various materials and is most often found on older homes because it is so long-lasting.

Below are the average costs of roof replacement for each of these materials in California and the national average costs.

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Material

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Material

MaterialAverage Costs per Sq.Ft. (California)Average Costs per Sq.Ft. (National Average)
Asphalt$5.50 - $9.50$3 - $9
Metal$7 - $18$4 - $30
Concrete$7 - $20$4 - $20
Clay$10 - $20$10 - $25
Slate$10 - $24.50$15 - $25

Roof Replacement Cost in California by Shape

The shape of your roof can play a role in how much it costs to reroof. Most fall into the same range of costs, but some very complex designs can change the cost, such as roofs with dormer windows inset and mansard roofs, which change pitch steeply.

Many roofs in California are gable, hipped, and Dutch roofs. Some modern homes may have flat or butterfly-style roofs, while older homes may have dormer and mansard styles. A-frame is less common throughout the state but can be found in the north closer to Oregon.

Some like the hipped and Dutch roofs require more material than other types. This means that two homes that are the same size but with different styles could have radically different costs for the replacement. Below are the average costs of roof replacement in California and the national average costs for the same shape.

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Shape

Comparison of the Cost per Sq.Ft. in California and the National Average Cost for Roof Replacement by Shape

ShapeAverage Cost per Sq.Ft. (California)Average Cost per Sq.Ft. (National Average)
Flat$3.50 - $4.50$4.50 - $7
Gable$5.50 - $24.50$3.50 - $9
Hipped$5.50 - $24.50$3.50 - $9
Dutch$5.50 - $24.50$3.50 - $9
Butterfly$5.50 - $24.50$3.50 - $9
Dormer$6 - $25$4 - $10
A-Frame$7 - $30$4.75 - $31
Mansard$9 - $30$8.50 - $25

Labor Costs to Replace a Roof in California

The labor costs to replace a roof in California varies depending on the material and the installation complexity. The average cost of labor ranges from $3 to $13 a sq.ft., depending on the material. Of those costs, $1 to $2 a sq.ft. is for the tear off of the old roof, with the remaining costs going toward the installation of the new roof and the other necessary materials. Complex roofs and patterns can have higher labor costs, as can roofs being clad with clay or slate.

The following breakdown shows the average cost of roof replacement, including tear off, installation, and materials.

Labor Costs per Sq.Ft. to Replace a Roof in California: Tear-Off, Material, and Installation

Labor Costs per Sq.Ft. to Replace a Roof in California: Tear-Off, Material, and Installation

Project AreaAverage Costs per Sq.Ft.
Tear-Off$1 - $2
Material$2.50 - $11.50
Installation$2 - $11

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Enhancement and Improvement Costs

Roof Inspection

Roof inspections are crucial to ensuring your roof remains in good condition. An inspection can help find leaks and other issues before they cause problems that may lead to a full replacement. The average inspection costs $100 to $600.

Asbestos Roof Removal

If you have an older roof, there is a chance it contains asbestos fibers. These were included in some roofs up to the 1980s. The cost of removing a roof that contains asbestos is $50 to $120 a sq.ft.

Additional Considerations and Costs

  • Permits. Permits are required for all roofing work in California. Failure to obtain a permit may result in fines. The cost of a permit ranges from $100 to $600.
  • Licensing and insurance. All contractors in California must be licensed and insured. Always request to see your contractor’s license and proof of insurance before starting a contract.
  • Material purchase. There may be times when you can purchase your material yourself to save money. If you do, make sure you have your roof measured properly so that you can purchase the correct amount.
  • Seasonal timing. Roofs can be replaced year-round in California. There is no preferred season.

FAQs

  • How much does it cost to replace a roof in California?

The average cost to replace a roof in California ranges from $12,000 to $20,000 for a 2,000 sq.ft. roof. Costs vary depending on your roof size and material.

  • How much does it cost to replace a roof in the Bay Area?

Average costs in the Bay Area are close to the state average range of $12,000 to $20,000 for a 2,000 sq.ft. roof. Your exact costs vary depending on the size of the roof and the material.

  • How long do roofs last in California?

This depends on several factors including the type and where in California you are located. Tile roofs can last 100 years when properly maintained, while slate roofs can last 200 years. Asphalt and architectural roofs can last anywhere from 10 to 50 years, depending on the climate and quality.

  • Do you need a permit to replace a roof in California?

Yes, any roofing work done in California requires a permit. Failure to obtain a permit may result in fines. Speak to your contractor or local municipality for more information.

  • How long is a roof warranty in California?

This depends on the roofing material and the company installing it. Some materials, such as architectural shingles, can have warranties of up to 50 years if properly installed.

Cost to replace a roof in California varies greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.

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The information provided by our cost guides comes from a great variety of sources, including specialized publications and websites, cost studies, U.S. associations, reports from the U.S. government, contractors and subcontractors, material suppliers, material price services, and other vendor websites. For more information, read our Methodology and sources