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James Hardie Fence Installation: The San Francisco Owner’s Guide
James Hardie fence installation in San Francisco typically runs $4,130 to $10,620 for a full panel-and-post system, with most jobs completed in two to four working days once materials arrive. We stock the common trim, fascia, and mounting hardware that fails first, so a strip-and-replace on most fence lines lands at the lower end of that range. The telltale sign is almost never a dramatic collapse. It’s usually a bottom panel edge that starts swelling after three or four fog seasons, a post that’s listing a few degrees toward the sidewalk, or trim that’s popped loose where a retaining wall meets the yard.
Which James Hardie Models This Applies To
Most San Francisco fence lines we open up are built with HardiePanel vertical siding in either 4×8 or 4×10 sheets, paired with HardieTrim boards (the 5/4 and 4/4 profiles) for fascia and post wraps. You’ll also see HardiePlank lap siding running horizontally on older installations, though panel construction holds up better against the wind off Ocean Beach. The compatibility gotcha most owners miss: HardiePanel is not designed for direct ground contact. It needs a minimum 6-inch clearance above grade, and in San Francisco’s wet-winter pattern, we push for 8 inches where irrigation spray or proximity to bay salt air is a factor. If the label on the back of a removed panel says “Made to last” you’re holding a product from the last decade. If it says “Engineered for Climate” you’re looking at current-generation material with a slightly different seal coat. For hardware, we use stainless or polymer-coated fasteners rated for coastal exposure. Generic zinc screws will rust through the fiber cement long before the panel itself gives out.
We also stock compatible trim and panel profiles used in KraftMaid, Cambria, and Silestone projects we’ve done in the city, though James Hardie fence work is specified to Hardie’s own production tolerances, not aftermarket knockoffs. We’re an independent contractor, not a James Hardie dealer or affiliate, which means we can be blunt about what to buy and what to skip.
Styles & brands we work with
Signs Your James Hardie Fence Installation Is Failing
- Bottom-edge swelling or delamination. Water wicking up from soil contact or turf sprinkler overspray softens the fiber cement layers. Left alone, the panel starts to flake and lose its structural bite on the bottom fasteners.
- Post lean without cracked concrete. The post base may have been set too shallow, or the anchor bracket is corroding below grade. In San Francisco’s sandy Outer Sunset soil, a 24-inch footing is the realistic minimum; we find a lot of failed fences that were set at 18 inches.
- Trim pulling away at joints. HardieTrim board expands and contracts with temperature swings, and the fog belt bakes in the late afternoon. If expansion gaps were cut too tight, corners open up and the caulk line splits.
- Chalky white bloom on panel faces. Efflorescence is not always fatal, but it signals water moving through the panel. Inland neighborhoods with hard water irrigation see it sooner. If it’s paired with softening, the panel is done.
- Fastener rust streaks bleeding down the board. The panel is fine; the hardware isn’t. Strip and reset with coastal-rated screws before the surrounding fiber cement starts to rot around the rust.
See the difference
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After
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After
Before
AfterReplacement Cost & What’s Included
In San Francisco, expect $4,130 to $10,620 for a complete James Hardie fence replacement, installed. The spread comes down to three things: linear footage, whether the existing post footings can be reused, and how much of the old fence needs to be demoed and hauled. A 30-foot side-yard fence with salvageable posts sits at the low end. A 60-foot property line with rotted posts, a neighbor’s fence tied into it, and a hillside slope hits the high end.
- 50 linear feet, posts reused, panels replaced: $4,130 – $6,200
- 50 linear feet, new posts and concrete footings: $6,500 – $8,000
- 80 linear feet, full demo and rebuild on grade: $8,500 – $10,620
Every quote includes material, tear-out, disposal, fasteners, and a written line-item breakdown before we start. No change orders, no reprice at the door. The 365-Day Done Right Promise covers the full installation: if anything we installed fails inside the first year, we come back and correct it at no charge. That’s in writing, signed, in your hand at close-out.
DIY or Call Us?
You can safely check the clearance between your bottom panel edge and the ground. You can tighten a loose post cap. You can verify that sprinkler heads are not washing the fence twice a day. What I’d steer you away from is pulling panels yourself on any fence over four feet tall. Fiber cement is heavy, the panels are brittle under point load, and a cracked sheet falling on you is a real injury. The fence is also frequently the property line anchor for your neighbor’s gate or trellis, and once it’s down, you own that problem. If you’ve got a failing post, leave it. A bad footing is a two-person dig, a concrete pour, and a level check, and a few degrees of error now is a fence that rubs against its own latch a year later. Call us at (831) 610-5598 and we’ll put a straight number on your fence in writing. Straight number, real scope, no surprises at close-out.
FAQs
Plan on 20 to 25 years for properly installed panels with correct ground clearance and coastal-rated hardware. We’ve pulled fences in the Outer Sunset that were still structurally sound at 22 years, and we’ve replaced 8-year-old fences that rotted from sprinkler contact and rusted fasteners. The material is rated for it; the installation is what decides it. Call (831) 610-5598 and we’ll tell you what your fence’s remaining life actually looks like.
Edge swelling and minor corner chipping can sometimes be addressed with trim work and resealing, but any panel that has delaminated through its layers is not repairable. Fiber cement is not plywood; you can’t patch a soft layer and call it whole. Repairs make sense when the damage is cosmetic and local. If water has moved into the core, replacement is the honest fix. We’ll quote both options and let you decide.
A straight replacement on a typical San Francisco lot runs two to four working days. Day one is demo and post setting. Day two or three is panel cutting, fastening, and trim. A slope or a shared fence line with a neighbor’s structure attached can add a day. The written scope includes the schedule before we begin, and the calendar date we commit to is the date we show up.
We stock the common failure items: HardieTrim board profiles in white and the standard primed finishes, panel-to-post angle brackets in stainless, coastal-rated screws, and flashings for grade transitions. Full sheets of HardiePanel are ordered to your exact measurements a few days ahead of the scheduled install, which keeps waste low and your price honest. No marked-up leftover inventory sitting in a warehouse.
If your fence is failing, call (831) 610-5598 for a free estimate. We’ll walk the fence line, measure twice, and hand you a written price that covers materials, labor, and the full year of coverage under the 365-Day Done Right Promise. You’ll get Curtis Lane’s crew, a live person on the phone, and a fence that’s done right the first time.
Written by Curtis Lane, Owner, Bradford Remodeling Co – San Francisco, CA at Bradford Remodeling Co San Francisco, serving San Francisco and nearby areas.
