Siding Contractors in Union City, CA

We install and replace siding on Union City homes, and we handle the whole project so you don’t have to manage it in pieces. One experienced team measures your home, helps you compare materials, handles the plans and permits through the City of Union City Building Division, supplies the product, and completes a quality installation. We’re CSLB Licensed & Insured, License #923505, Diamond Certified, and BBB Accredited with an A+ Rating, with 15+ years serving Bay Area homeowners. California home improvement contractors must be licensed by the CSLB, so that credential is the first thing worth checking on any bid you compare against other siding contractors.

Schedule a free, no-obligation in-home or virtual consultation. Call (415) 650-0634. You can review our full siding services anytime.

Our Siding Services in Union City

We replace siding on Union City homes as a complete scope: inspection, removal, weather barrier, new cladding, trim, and the permit that goes with it. Siding installation begins with a thorough inspection of the existing exterior, because what we find behind the cladding shapes the plan. When the sheathing shows rot, full removal of the old siding is standard, and a weather-resistant barrier is installed before the new siding goes up. We treat function and appearance as equally important, since both matter when you’re investing in your home’s exterior. The right materials protect the structure and beautify your curb appeal at the same time, and that pride in the finished result is part of why our customers come back.

As a one-stop shop, we supply the product, measure for accuracy, manage permits, coordinate delivery, and install. If you’re also upgrading windows or doors, we can measure and plan those through the same team, which keeps flashing and trim transitions consistent. New windows pair naturally with new siding because we align the openings and weatherproofing in one pass. Here’s where we start most Union City projects. Contact us to compare options.

Fiber Cement (James Hardie) Siding Installation

Fiber cement is our strongest recommendation for hillside and WUI-adjacent homes. As James Hardie siding contractors, we install fiber cement that lasts 30 to 50 years and carries a Class A fire rating, which matters for properties near the Wildland Urban Interface zone east of Mission Boulevard. James Hardie fiber cement siding replacement also resists moisture, insects, and warping, so it holds up well in our marine-influenced climate. Many customers choose it when they want the lowest long-term maintenance on a premium material, and its decades of proven longevity make it an easy material choice for owners planning to stay.

Engineered Wood (LP SmartSide) Siding

Engineered wood gives you a warm wood look with engineered durability, a good fit for the late-20th-century homes common across Union City. LP SmartSide engineered wood lasts 20 to 30 years and resists moisture better than traditional wood, which is part of why clients who want authentic grain without the upkeep often land here.

Vinyl and Aluminum Siding Installation

Vinyl is the lowest cost per square foot and the lowest-maintenance option. Insulated vinyl siding is the lowest-cost option per square foot, and the insulated version adds energy efficiency through built-in insulation. Vinyl siding typically lasts 20 to 30 years. We also work with aluminum siding for homeowners who want a durable metal exterior, and aluminum resists fire and pests while staying light on a wall. When we compare vinyl, aluminum, and the premium materials side by side, the choice usually comes down to budget, appearance, and how long you plan to stay in the home.

Stucco & Wood Siding Repair and Replacement

We repair and replace stucco and wood siding, but we don’t diagnose stucco cracking by appearance alone. Union City’s western floodplain and tidal-flat areas include poorly drained clay and silty-clay soils with settlement, shrink-swell, subsidence, and liquefaction concerns, so a crack may involve more than the finish layer. We evaluate the wall and check for water damage behind it before covering anything, since trapped moisture and mold left hidden only grow worse.

Why Union City Homeowners Choose Best Exteriors

Homeowners choose us because the proof is on the table before the work starts. We’re CSLB Licensed & Insured, License #923505, Diamond Certified, and carry a BBB rating of A+ with full accreditation, backed by 15+ years in the market and 360+ projects completed yearly. That record answers the fear every homeowner has: that a contractor will overpromise and underdeliver, and the reliability behind it is what drives our customer satisfaction. Unlike contractors who disappear after the deposit, we stand behind the whole exterior.

A contractor who knows the local climate chooses the right materials, and we select cladding for Union City’s conditions rather than defaulting to one product for every home. Our general liability insurance and workers’ compensation insurance protect your property during construction. Your coverage includes both our workmanship warranty and the manufacturer warranties on the materials, up to a double lifetime warranty on qualifying installations. We back that with Best Value pricing and 0% financing, so quality and an accessible price coexist here. If you later add a roof, windows, or door project, you work with the same team you already trust, whether you need siding contractors or roofing contractors for the next phase.

Schedule your free consultation and see the full scope before you decide.

How Our Union City Siding Process Works

Our process is three simple steps: Connect, Measure, Install. We start with a free consultation to understand the home, then we measure for accuracy before any product is ordered, then we complete the installation. Between those steps, and before work begins, we handle the plans and permits through the City of Union City Building Division at 34009 Alvarado-Niles Road and coordinate product delivery.

You get a detailed, itemized estimate, because itemized estimates help avoid unforeseen project costs. In California, a home improvement contract must include a detailed scope of work and a payment schedule, and California law limits the down payment to $1,000 or 10% of the total project price, whichever is less. Those protections are yours, and we write every contract to honor them. Our crews perform regular site clean-ups during the project, and proper house wrap installation prevents moisture infiltration, which is why we don’t skip it. You’ll have a clear project plan, not a one-size-fits-all completion date.

Union City Climate, Codes, and Energy Efficiency in Alameda County

Union City’s housing stock and terrain shape every siding decision we make here in Alameda County. The city’s housing inventory tripled between 1970 and 1980, from 3,913 to 12,333 units, so many homeowners are working with late-20th-century homes. Decoto and Old Alvarado are the two oldest neighborhoods and carry the city’s most concentrated housing-rehabilitation needs. Old Alvarado includes the Smith Street Commercial Core, Union City Boulevard Corridor, and Victorian Village residential neighborhood, and the City describes Historic Alvarado as one of its oldest neighborhoods with an eclectic historic character. In those areas our material selection matches profiles and trim carefully before changing visible materials.

The Seven Hills and Tamarack areas include roughly 300 private homes on lots of about 3,600 to 7,000 square feet at the foot of the hills along Mission Boulevard. These foothill properties, and any home within the Wildland Urban Interface zone east of Mission Boulevard, call for code-appropriate material review, which is where fiber cement’s Class A fire rating earns its place. The Station District, south of Decoto Road and east of Alvarado-Niles Road around the BART station, is newer and often involves HOA or multifamily approvals.

Union City identifies Climate Zone 3, an 85-mph basic wind speed, Exposure B, and design rainfall of 1.5 inches per hour. We select fastening patterns and flashing details for those design conditions, because wind exposure and water management matter as much as the visible exteriors. Quality siding and roof flashing prevent moisture infiltration and improve energy efficiency, and proper siding can cut heating and cooling costs by up to 20%.

New Siding Permits and Service Area Near San Leandro

New siding is not on the City’s exemption list, so it is permit-required, and we handle it through the Building Division. Replacement can also trigger mandatory insulation and weather-resistant barrier upgrades under California’s Title 24 Energy Code, and HOA approval applies where your property is governed by one. Our service area covers all of Union City and nearby San Leandro from our Bay Area office via I-880.

Frequently Asked Questions

Do I need a permit to replace siding in Union City?

Yes. New siding is not on the City’s published exemption list, so a building permit is typically required for siding projects in Union City. We handle the plans, permits, and inspections through the City of Union City Building Division at 34009 Alvarado-Niles Road. You can reach the division at 510-675-5313, and its inspection request line is 510-487-0711. If your property is governed by an HOA, the City’s permit application asks for HOA approval, which we help you secure.

How much does a siding job cost for a Union City house?

Cost depends on the home’s size, the material, the removal scope, and any repairs found behind the old siding, so we provide a free estimate with itemized line items rather than a flat number. As material context, fiber cement siding runs $13 to $18 per square foot, engineered wood $10 to $16, and vinyl $9 to $14. Union City’s FY 2026–27 permit fees are valuation-based, not a flat siding fee: for a $2,001 to $25,000 valuation, the City charges $180 for the first $2,000 plus $40 per additional $1,000 or fraction, plus a $109 issuance fee and a $326 processing fee. Siding is a strong investment too, and the value it adds goes beyond the resale numbers. Fiber cement siding returns about 114% at resale, and siding replacement recoups 70% or more of project costs.

How long does a full siding project take?

Most whole-home siding projects run about one to two weeks, and a smaller single-story home usually takes a few days to a week. The schedule depends on home height, material availability, removal scope, permits, and what we find behind the cladding. Inspection matters here: requests received before 3 p.m. are scheduled for the next business day when capacity allows, and the City does not perform inspections on its alternating closed Fridays.

Is fiber cement or vinyl siding better for my Union City home?

It depends on the home. Fiber cement offers a Class A fire rating and a long lifespan, which makes it strong for properties near the Wildland Urban Interface zone east of Mission Boulevard. Vinyl is the lowest cost per square foot and low maintenance, and modern siding materials reduce heating and cooling costs significantly either way. We bring samples and give an informative, patient, consultative recommendation for your specific house.

What are the signs I need new siding, and what if you find dry rot?

Common signs of damaged siding include cracking panels, soft spots, peeling paint, and rising energy bills, and the benefits of upgrading show up quickly in comfort and appearance. We document any dry rot and get your approval before any extra scope proceeds. Full removal of old siding is standard when the sheathing shows rot or trapped moisture, and we repair what we find. You see the underlying repair in writing first, so there’s no surprise billing.

Do you serve my Union City neighborhood?

Yes. We serve all of Union City from our Bay Area office via I-880, including Decoto, Historic Alvarado, Seven Hills, and the Station District, and we reach nearby San Leandro too. The City recognizes those along with Union Landing, Four Corners, Horner/Veasy, Calaveras Landing, Mission Boulevard, and Union City Boulevard as distinct areas, and we cover every one, plus the wider Bay Area and Sacramento.

Get Your Free Union City Siding Quote

The simplest next step is a free estimate and expert advice for your Union City siding project. Searching for siding contractors near me usually ends in a long comparison, so schedule an in-home or virtual consultation and let the credentials do the talking. Ask about 0% financing with zero down if you’d like to spread the investment. Call us at (415) 650-0634 from our office at 50 California St #1500 in San Francisco, or reach us online to get started.