New Construction in Los Angeles, CA

New Construction in Los Angeles, CA

New construction roofing in Los Angeles means installing a roof on a brand-new home, an addition, or a ground-up build. It’s not the same as tearing off an old roof and replacing it. There’s no existing roof to remove, no hidden rot to discover, and no old flashing to work around. Instead, it’s a clean-slate installation that has to be done right the first time, because the roof goes on before anyone moves in and before any inspector signs off. If you’re building a new home in Los Angeles, you need a roofer who understands local code, works with your general contractor or you directly, and shows up when they say they will. That’s exactly what we do at Mercer Roofing Co Los Angeles. Call us at (213) 521-8272 to talk through your project.

This page covers what new construction roofing involves, what it costs in Los Angeles, how our process works, and how to avoid the mistakes that cost builders and homeowners real money. If you’re still deciding between repairing an older roof and starting fresh, our Roof Replacement & Installation in Los Angeles page walks through both paths in detail.

Key Takeaways

• New construction roofing in Los Angeles typically runs $12,000 to $45,000+ depending on roof size, pitch, and materials.
• Permits and inspections are non-negotiable in LA. We coordinate both.
• Asphalt shingle installation on a new build usually takes 2 to 5 days for a standard-sized home.
• Everyone who steps onto your property from Mercer Roofing is background-checked, uniformed, and photo-badged. You’ll know their name and see their photo before they arrive.
• Every new construction roof we install includes a written guarantee and our 365-Day Done Right Promise.

When You Need New Construction

New construction roofing applies to specific situations. Here are the most common ones we handle in Los Angeles:

• You’re building a ground-up home. Whether it’s a modern box in Silver Lake or a traditional build in Mar Vista, the roof goes on before drywall, paint, and trim. Getting it right means no leaks from day one.
• You’re adding an addition. A second story, a new primary suite, or a garage conversion in neighborhoods like Eagle Rock or West Adams needs roof structure that ties into the existing roofline without creating water traps.
• You’re building an ADU. Los Angeles has made accessory dwelling units easier to permit, and many homeowners in the Valley and South LA are adding them. An ADU roof has to match the main house or complement it, and it has to pass a separate inspection.
• You’re a general contractor who needs a reliable roofing crew. If you’re tired of roofers who ghost mid-project or leave punch-list items unfinished, we work with GCs across LA who need a dependable trade partner.
• The existing roof is beyond repair and a full replacement makes more sense. Sometimes the framing is fine but the roof deck is shot. We’ll tell you honestly whether repair makes sense or if new construction from the deck up is the smarter spend.
• You’re converting a non-living space into living space. Attics, garages, and covered patios being turned into livable rooms in places like Highland Park and Atwater Village all need proper roofing, insulation, and ventilation to meet code.

Our New Construction Process

We keep the process straightforward. Here’s how it works when you hire Mercer Roofing Co Los Angeles for a new construction roof:

1. We start with the plan, not the roof. You send us the architectural plans, the permit status, and the scope. We review it, identify any red flags (like incompatible slopes or missing ventilation specs), and give you a clear picture of what the roof needs.
2. We walk the site and measure everything. One of our lead technicians visits the property, takes precise measurements, checks the framing and decking condition, and notes any access issues that could affect material delivery or staging. New builds in hillside areas like Mount Washington or Baldwin Hills often have tight access, and we plan for that before we quote.
3. You get a written price before anything starts. This isn’t a ballpark. It’s a line-item price covering materials, labor, permits, and waste removal. If anything changes, we tell you before we proceed. No surprise invoices, ever.
4. We schedule and install. Our crew arrives in marked uniforms, with photo ID badges. Your assigned technician’s name and photo are sent to you ahead of the visit. We install underlayment, flashing, vents, and shingles in the right sequence, with the manufacturer’s installation specs followed exactly.
5. Inspection and walkthrough. Once the roof is done, we walk it with you (or your GC), explain what was installed and why, and confirm every detail matches the written quote. If the city inspector has notes, we address them promptly.
6. You get the written guarantee. Every new construction roof we install includes a written guarantee. And if anything isn’t right within 365 days, our Done Right Promise means we come back and make it right at no charge.

New Construction Pricing in Los Angeles

New construction roofing in Los Angeles typically costs between $12,000 and $45,000+ for a standard single-family home. That range reflects real differences in roof size, material choice, roof pitch, and job-site access. Here’s how the numbers break down:

Roof Component or Factor	Typical Cost Range in Los Angeles
Asphalt shingle roof (1,500 – 2,500 sq. ft. roof area)	$12,000 – $22,000
Architectural shingle upgrade (GAF, Atlas, CertainTeed)	$14,000 – $28,000
Tile or metal roof (new build)	$25,000 – $60,000+
Underlayment and flashing (full system)	$2,500 – $6,000
Roof decking replacement (if needed)	$1,800 – $4,500
Permit fees and inspections	$800 – $2,500
Waste removal and site cleanup	$600 – $1,500

What moves the price most in Los Angeles? First, roof size and pitch. A steep roof in the Hollywood Hills costs more to install than a low-slope roof in the flats of Inglewood. Second, material choice. We install manufacturer-recognized shingle brands including GAF and Atlas, and those architectural lines cost more than basic three-tab but last noticeably longer. Third, access. If the crew has to carry materials up three flights of stairs or work around a narrow hillside street, labor time goes up, and so does the quote.

We give you a written price before any work starts. Always. That’s not a promotional offer. It’s how we operate on every single project. Call (213) 521-8272 and we’ll walk the site, measure, and get you a real number, not a vague range.

Why Homeowners Choose Mercer Roofing for New Construction

Most roofing companies can nail shingles. What’s harder to find is a roofer who treats your home and property the way you do. In Los Angeles, where construction sites attract all kinds of people, we know that opening your property to a crew is a genuine concern. That’s why we built our entire process around certainty.

Before any Mercer technician arrives at your new construction site, you receive their name and photo by text or email. When they show up, they’re wearing a clean, marked uniform and carrying a photo ID badge. Every person we send is background-checked and identity-verified under the Threshold Verified standard, part of the Threshold Group family of home-service companies. This isn’t a nice-to-have. It’s the contractual requirement every independently owned Threshold Group location must meet. You’ll know exactly who is on your property, and you’ll have proof at the door.

Our owner, Grant Whitlock, has built Mercer Roofing Co Los Angeles around a simple idea: roofing work should be done by people you can identify, at a price you agreed to in writing, with a guarantee you can hold in your hand. If a repair or installation isn’t right within 365 days, we make it right. That’s the Done Right Promise, and it’s included with every job we take on.

Materials We Use on New Construction Roofs

We install roofing systems using manufacturer-recognized shingle brands that Los Angeles builders and homeowners trust. That includes GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. Each has different strengths: GAF is known for widespread contractor support and solid architectural lines. Atlas makes shingles with strong wind-resistance ratings, which matters in the Santa Ana wind corridors that hit parts of the San Fernando Valley. Tamko and Boral both offer lines that work well in Southern California’s heat and UV exposure.

We don’t push one brand on every job. We look at your roof’s pitch, the local microclimate, your home’s architectural style, and your budget, then recommend a system that fits. If you’re building in a fire-prone zone, which includes much of the hillside territory in Los Angeles County, we can walk you through Class A rated assembly options and what the current wildfire code requires in your specific neighborhood.

Local Codes and Permits in Los Angeles

New construction roofing in the City of Los Angeles requires permits through the Department of Building and Safety (LADBS). The permit process typically involves a plan check, an in-progress inspection for the underlayment and nailing pattern, and a final inspection once the roof is complete. If you’re building in a designated fire hazard severity zone, you’ll also need a roof assembly that meets the requirements of Los Angeles County’s wildfire code, which often means Class A materials and specific underlayment methods.

We handle permit coordination as part of our new construction service. Our crews know what LADBS inspectors in different districts look for. A roof that passes inspection in San Pedro doesn’t always sail through in Woodland Hills, and we prepare accordingly. This is one of the areas where working with a local crew pays off. We’ve done enough new construction roofing across Los Angeles to know the inspectors, the common snags, and how to avoid them.

FAQs – New Construction

How much does new construction roofing cost in Los Angeles?

New construction roofing in Los Angeles typically costs $12,000 to $45,000+ for a single-family home, depending on roof size, pitch, material choice, and site access. A standard asphalt shingle roof on a 2,000-square-foot home usually falls between $14,000 and $22,000. Tile and metal systems start higher. For an exact written quote on your specific project, call (213) 521-8272. Estimates are free.

How long does a new construction roof take to install?

For a standard-sized home in Los Angeles, new construction roof installation typically takes 2 to 5 working days once the deck is ready. Larger custom homes, steep hillside builds, or tile roofs can take 7 to 14 days. Weather delays are rare in Southern California, but wind events and occasional rain can shift the schedule. We’ll give you a timeline in writing before we start, and we stick to it.

Do I need a permit for new construction roofing in Los Angeles?

Yes. New construction roofing in the City of Los Angeles requires a permit through LADBS. The permit must be pulled before installation begins, and the roof must pass inspections at key stages. If you’re in a wildfire hazard zone, additional roof assembly requirements apply. We handle permit coordination for every new construction roof we install, so you don’t have to navigate the LADBS process alone.

Is it cheaper to roof during new construction or to replace later?

It’s almost always cheaper to install the roof correctly during new construction than to tear off and replace a messed-up roof later. During new construction there’s no demolition, no wasted material, and no hidden repair costs from old leaks. A roof installed wrong during the build phase creates framing rot, insulation damage, and drywall repairs down the line, which is far more expensive than doing it right the first time. We recommend getting the new construction roof done properly from the start.

Can you coordinate with my general contractor?

Yes. Roughly half of our new construction roofing jobs in Los Angeles involve working alongside a general contractor. We handle the roofing scope, communicate directly with the GC on sequencing and inspection timing, and make sure our work doesn’t slow down the rest of the build. If you’re self-managing the project, we work with you directly the same way. Call (213) 521-8272 to discuss your timeline.

Who will be on my property during the roof installation?

You’ll know exactly who’s on your property, because we send you the name and photo of your assigned technician before they arrive. Every Mercer Roofing technician is background-checked, identity-verified, uniformed, and carries a photo ID badge at the door. This is the Threshold Verified standard, and it applies to every visit on every new construction job we do in Los Angeles.

Call Mercer Roofing Co Los Angeles for Your New Construction Roof

If you’re building a new home, an ADU, or an addition anywhere in Los Angeles, we’d like to give you a written price and a clear timeline. No pressure, no vague estimates, no strangers showing up at your door. You’ll know who’s coming, what it costs, and what happens if anything isn’t right. Call (213) 521-8272 and a live person will answer, 24/7. We’ll schedule a site visit, put the numbers in writing, and take it from there.

Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving Los Angeles.