Siding Cost Calculator (2026)
Here's the 2026 siding market in one paragraph: vinyl and fiber cement material prices have finally leveled off after three years of mill volatility, with James Hardie holding flat since their Q1 price sheet. The catch is on the labor side. Crews capable of running blind-nailed Hardie on a 2-story elevation with proper kick-out and Z-flashing details are charging an all-time-high labor premium— we're seeing $2.50–$4.25/sqft in labor alone on multi-story work, double what the same crew would charge for a single-story ranch.
That gap is why two contractors can quote the same house $8,000 apart. Material is the same. The labor, the WRB, and what they're doing behind the wall is not. This calculator gives you a real number — then the sections below tell you what your bidders are pricing in (or skipping).
2026 Siding Costs — and What Each Material Does Wrong
Whole-house ranges below assume a 2,000–2,400 sqft single-family home, full tear-off, and standard window/door count. The Maintenance & The Catch column is the failure mode we see most often in the field — the part the manufacturer's glossy spec sheet doesn't lead with.
| Siding Type | Typical Cost (Whole House) | Maintenance & The Catch |
|---|---|---|
| Vinyl Siding | $6,500 – $17,000 | Brittle below 20°F — cold-weather installs crack at the nailing flange. We've also seen vinyl melt and warp from heat reflected off neighboring Low-E window glass. Once it warps, no fix but replacement of the affected courses. |
| Fiber Cement (James Hardie) | $13,000 – $32,000 | Requires a minimum 6" ground clearance and 2" from horizontal surfaces. Drop below that and the bottom course wicks moisture, delaminates, and voids the Hardie warranty. Also requires blind-nailing (not face-nailing) to keep the 30-year coverage intact. |
| Natural Wood (Cedar / Redwood) | $11,000 – $26,000 | High life-cycle cost. Restain or refinish every 4–6 years at $1.50–$3.00/sqft. Skip a cycle and you get UV graying, end-grain checking, and accelerated rot at horizontal joints. |
| Engineered Wood (LP SmartSide) | $8,500 – $21,000 | Edge-seal failure. If installers cut a panel and don't seal the field cut with the manufacturer's edge primer, moisture wicks in and the OSB core swells within 2–3 years. Looks fine on day one. Fails on year three. |
Siding Calculator
Siding Replacement Cost Estimator
Select your materials and scope, enter your ZIP code for a localized estimate range.
How Our Logic Works
Most online siding calculators do one thing: multiply your wall area by a price-per-sqft. That's why their numbers come in 15–25% light. Ours doesn't.
When you enter your wall area, material, story count, and window/door density, here's what the calculator is actually doing under the hood:
- Waste factor — We add a 10–15% material waste premium on top of net wall area, depending on material. Vinyl runs ~10% waste because of factory-finished lengths. Hardie and natural wood lap siding run 12–15% because every horizontal course has to be ripped to land properly at window heads, sills, and the bottom water table.
- The cutting tax— That “Windows & Doors” selector you saw in the calculator isn't cosmetic. Each opening adds 4–7 linear feet of cutting, flashing, and trim labor. We weight a “Few” house at baseline labor, “Standard” (8–15 openings) at a +12% labor premium, and “Many” (15+) at a +22–28% premium. That's why two identically-sized houses can quote $4K apart based purely on opening count.
- Story multiplier — A 2-story elevation triggers scaffolding ($1,800–$3,800 baseline) and a per-sqft labor uplift of 25–40%. A 3-story or steep-grade lot can push the uplift past 50%. The calculator bakes this in once you select story count.
- Regional ZIP modifier — Your ZIP code maps to a metro labor index. CA, NY, MA, WA, and IL urban cores all run 15–35% above the national baseline; rural Midwest and Southeast ZIPs run 5–15% below it.
The output is a range, not a fixed number, because no calculator can see your sheathing, your soils, or your AHJ's flashing requirements. Use the bottom of the range to negotiate. Use the top to budget.
Factors That Actually Move the Number
- Story count and elevation complexity— A single-story ranch with simple gables runs cleanly. A 2-story home with cantilevers, bay windows, and dormers requires scaffolding, custom flashing kits, and slow, methodical lap work. That's where the labor premium lives in 2026.
- Material spec and profile — Vinyl runs $3–$8/sqft installed. Hardie ColorPlus lap is $7–$13/sqft installed (more for shake or panel profiles). Engineered wood (LP SmartSide) is $5–$10/sqft. Natural cedar clear-grade clapboard runs $9–$17/sqft.
- Tear-off vs. siding-over— Full tear-off adds $1.20–$2.40/sqft but is the only way to inspect sheathing, replace WRB, and re-flash openings. “Siding over” existing material saves money on day one and creates a moisture time-bomb on day 1,000 (more in the Behind the Wall section below).
- Trim, fascia, soffit, and water table — Replacing aluminum-wrapped trim with PVC trim board, redoing fascia and soffit, and installing a proper kick-flashed water table at the foundation line adds 10–22% to the total. Most legitimate Hardie installs include this; cheap quotes skip it.
- Kick-out flashing at roof-to-wall intersections — The single most-skipped detail in residential siding. Where a roof eave dies into a sidewall, code requires a kick-out flashingto divert water away from the siding. We see this missing on 60%+ of the houses we're called to inspect for water damage. Adds $35–$80 per intersection if done correctly.
- Z-flashing at horizontal material transitions— If you're mixing materials (e.g., shake at the gable, lap on the field, panel at the wainscot), every horizontal transition needs a Z-flashing with proper lap onto the WRB. Skip it and you get capillary moisture intrusion at the seam.
- Insulation and continuous exterior— Adding 1/2" or 1" rigid foam (XPS or polyiso) under the siding adds $1.20–$3.00/sqft but is increasingly required by IECC 2024 and Title 24 for new conditioned envelopes. Insulated vinyl panels are an alternative at +$1.50–$2.50/sqft over standard vinyl.
Behind the Wall — Sheathing, WRB, and the Stuff You Can't See
Once the tear-off happens, this is when the project either stays on budget or doesn't. Every siding job we've done in the last three years has involved at least one of these three discoveries.
1. Rotted OSB / sheathing replacement
When the old siding comes off, the first thing the crew does is sound-test the sheathing with a hammer. Soft spots = rot. Common culprits: failed kick-out flashing at roof-wall corners, missing Z-flashing at material transitions, or simply 30-year-old felt paper that gave up.
2026 replacement pricing:
- 1/2" CDX plywood— $58–$78 per 4×8 sheet materials, $95–$150 installed including cut-and-patch labor. Always our first choice for replacement; it's structurally consistent and accepts fasteners better than OSB.
- 7/16" OSB— $38–$52 per sheet materials, $75–$120 installed. Cheaper, code-compliant, but we don't use it on coastal or high-humidity homes — once it gets wet during install, it's already compromised.
- 5/8" ZIP System sheathing — $72–$95 per sheet, $130–$175 installed. The premium play. Integrated WRB coating means you tape the seams with ZIP tape and skip the house wrap entirely. Worth it on full-elevation tear-offs.
Budget a $1,200–$3,500 sheathing contingencyon any full tear-off, more on pre-1995 homes. We've had jobs come in with zero sheet replacement and others where we replaced 18 sheets. It's the line item nobody can quote you accurately on day one.
2. Water-resistive barrier (WRB) — house wrap done correctly
The WRB is the actual weather barrier. Your siding is decorative cladding. A cheap quote will reuse the existing house wrap or skip flashing tape at openings — that's how you end up with a $25,000 siding job that leaks within 18 months.
What a real 2026 WRB scope looks like:
- New mechanically-fastened house wrap(Tyvek HomeWrap, Tyvek CommercialWrap, or Benjamin Obdyke HydroGap). Material is $0.18–$0.45/sqft. Add labor and you're at $0.55–$1.10/sqft installed.
- High-performance flashing tape at every window and door opening — pan flashing on the sill, jamb tape, and head-flashing tape lapped over the wrap. We spec 3M 8067 All-Weather Flashing Tape on cold-weather jobs (rated to -20°F at install) or Siga Wigluv on premium builds. Tape alone runs $4–$9 per opening; full pan flashing detail with back dam and corner shingles is $40–$95 per opening done correctly.
- Sealed seams at every WRB lap — proper shingle-style lapping with seam tape on horizontal joints. Skip this and the wind drives water behind the wrap.
- Drainage gap— IRC 2024 now requires a 1/16" minimum drainage plane behind absorptive cladding (fiber cement, stucco, wood). HydroGap, Slicker HP, or rainscreen battens. Adds $0.40–$1.20/sqft.
3. Window and door flashing rebuild
If the existing windows are getting reused, the crew has to carefully cut the old siding around them, inspect the existing nailing fin, re-tape any failed flashing, and integrate the new WRB shingle-style with the window flange. Budget $60–$140 per opening for proper re-flashing on a reused window. If a window has visible rot or failed flashing, full removal and re-install adds $250–$650 per window.
Frequently Asked Questions
Why did I get a quote that's $5,000 cheaper than this calculator?
Because that contractor is almost certainly quoting a 'siding-over' instead of a full tear-off. Going over the existing material saves them 1.5–2 days of demo labor, the dump fees ($400–$900), and — this is the dangerous part — they get to skip the WRB replacement and re-flashing of every window. From the curb the finished job looks identical. Behind the wall, you've now buried whatever rot, mold, or failed flashing was already there under a brand-new 30-year cladding. We've torn into 5-year-old siding-over jobs and found wet OSB and active mold underneath. The other place that $5K disappears: cheaper installers face-nail Hardie instead of blind-nailing it (voids the warranty), skip kick-out flashing at roof-to-wall intersections, and reuse the existing house wrap. If a quote is materially below the calculator range, ask for a written tear-off scope that includes new house wrap, pan flashing at every window, and kick-out flashing at every roof termination. Watch how fast the price comes up.
Tear-off vs. siding-over — when is going over actually OK?
Almost never, in our 2026 opinion. The only scenario we sign off on is: vinyl over a single layer of existing aluminum or vinyl, on a home less than 15 years old, with no signs of moisture intrusion at any opening, and an inspection of the sheathing through removed plumbing/electrical penetrations confirming dry, intact OSB. That's a vanishingly rare combination. Even then, you're betting that the original WRB has 30 more years of life, which it doesn't. Tear-off costs more on day one and saves you a five-figure repair on day 2,000.
How much does new siding actually cost in 2026?
For a standard 2,000–2,400 sqft single-family home with full tear-off, new WRB, and proper flashing details: vinyl lands at $6,500–$17,000, fiber cement at $13,000–$32,000, engineered wood at $8,500–$21,000, and natural cedar at $11,000–$26,000. Add a 2-story labor premium of 30–55% if you're doing more than a single-story ranch. Add a sheathing contingency of $1,200–$3,500 for any home over 25 years old. Most homeowners we work with end up at the 60th–75th percentile of these ranges once the real scope shakes out.
Why is fiber cement so labor-sensitive — what's blind-nailing?
Hardie's 30-year warranty requires blind-nailing, which means each plank is fastened through the top edge so the next course's nailing flange covers the nail head. The alternative — face-nailing, where the nail goes through the visible face of the plank — is faster and easier, but it voids the warranty and leaves nail heads exposed to weather. A crew that doesn't know how to set blind-nail pneumatics correctly will either over-drive nails (cracks the plank), under-drive them (loose fastening, panel rattle), or just face-nail and pretend they didn't. This is why two Hardie quotes can be $4K apart for the same square footage: one crew is doing it right, the other is taking 30% less time and exposing you to a denied warranty claim in year 12.
How long does the install actually take?
Plan on 1.5–3 weeks of active work for a standard single-family, more if sheathing repairs come up. Vinyl on a single-story ranch is 5–8 working days. Hardie or wood on a 2-story is 12–18 working days because every course is cut precisely, blind-nailed, and integrated with kick-out and Z-flashing details that take time to do right. Add 2–4 days if your AHJ requires inspection between WRB and cladding (increasingly common in IECC 2024 jurisdictions). Weather delays in spring and fall can stretch this further — most siding adhesives and sealants have minimum application temperatures.
Will siding actually pay back at resale?
Among exterior improvements, yes — but not as much as the marketing claims. In our 2026 resale data, fiber cement is recouping 65–78% of cost at sale, vinyl is at 60–72%, and natural wood is the worst at 45–60% because buyers price in the maintenance liability. The bigger value isn't the dollar recoup, it's the time-on-market premium: homes with new siding sit on the MLS 11–18 days less than comparable homes with aging siding. That matters more than the percentage in most markets.
What's the one detail that separates a 30-year siding job from a 10-year one?
Kick-out flashing. It's a small piece of metal at every roof-to-sidewall termination that diverts water away from the siding and into the gutter. Code requires it. Manufacturers require it. About 60% of the homes we inspect for siding failure are missing it, and that single missing detail accounts for the majority of rot we find behind the cladding. When you interview bidders, ask one question: 'Where does your kick-out flashing go and what's the throat dimension?' If they don't have an answer, you've already learned everything you need to know.