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Unilock Fence Installation: The Riverside Owner’s Guide
Unilock fence installation in Riverside typically runs $3,500 to $9,000 installed, depending on linear footage, paver style, and whether we’re working with new construction or replacing a failed section. Most homeowners discover their Unilock fence has a problem the same way: a post starts leaning after a hard rain, a cap cracks off, or the whole run begins shifting because the base wasn’t built for Riverside clay soil. We stock Unilock-compatible fence components and install them with a written price before any work starts, so you know the number before we pick up a tool.
Key Takeaways
- Installed price in Riverside: $3,500 – $9,000 for a typical Unilock fence run
- What fails first: base preparation and post anchoring, not the product itself
- We install Unilock-compatible components with a written guarantee on every job
- Free estimates – call (341) 895-1170 and a real person answers
Which Unilock Models This Applies To
Unilock fence installation covers two distinct product families: the Estate Wall system, which uses a modular block design with a decorative cap course, and the split-face column and panel units that pair with Unilock pavers. If you bought the product line from a Riverside landscape supply yard, you likely have the Estate Wall series, which comes in a 6-inch modular face with matching corner units and caps. The posts on these systems interlock with the panel courses, so a failing section usually means the base course has moved, not just one block. When we come out for an estimate, we measure the existing block dimensions and pull a cap or two to identify the series. Unilock discontinued some older color blends, so if we can’t match an exact discontinued shade, we’ll show you the closest current option before ordering anything.
For parts, we recommend OEM Unilock block and cap units over aftermarket look-alikes. The aftermarket versions often run a hair different on the modular face dimension, which leaves a visible seam every few courses in Riverside’s hard sun. Not worth saving forty cents a block to have a wavy line staring at you from the backyard. We also carry Unilock’s polymeric sand for the joints, which matters in Riverside because our dry heat breaks down cheap joint compounds fast.
Styles & brands we work with
Signs Your Unilock Fence Installation Is Failing
- Leaning or tilting posts. This almost always means the original base course was set on unprepared Riverside clay. Our local soil swells when it rains and shrinks when it dries, which pushes shallow-set posts out of line within a year or two.
- Cracked or spalled cap units. Riverside sun is hard on concrete products. Caps are the thinnest, most exposed piece, and cheap caps crack along the top edge first. We replace them with Unilock factory caps matched to your block color.
- Gaps opening between courses. When the ground shifts, the middle of a run separates. Picture a 25-foot fence line with a half-inch gap at the third course. That’s not a block problem; that’s a base failure under the weight.
- Joint sand washing out after every rain. If you’re sweeping sand back into the joints each winter, the original install skipped the proper compaction step. Loose joints let water in behind the blocks, which accelerates the structural decline.
- Sinking sections, especially near sprinkler lines. A leaking irrigation valve under your fence line saturates the soil and settles a section. We see this regularly in older Riverside neighborhoods like Arlington, where irrigation systems are original to 1960s and 70s homes.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
For a straight run in Riverside, figure $3,500 to $6,000 for a basic Unilock fence replacement of 20 to 40 linear feet. Longer runs with multiple corners, steps, or decorative caps land in the $6,000 to $9,000 range. What drives the price up: whether the old base has to be excavated and rebuilt, if you want a matching seat wall or column caps, and whether the site needs retaining wall work behind the fence line. What keeps the price down: a flat yard with easy access where we can set a proper crushed-rock base and compact it without fighting tree roots.
Every estimate is a written number. You’ll see the base prep, block count, cap count, joint sand, labor, and haul-away all as separate lines before you approve anything. The 365-Day Done Right Promise covers the installation in writing. If a post shifts or a cap crack appears within the first year, we come back and make it right at no charge. Free second visit, no service call fee, no arguing about whose fault it was.
Unilock Fence Installation Cost in Riverside
- Basic 20 – 40 ft straight run: $3,500 – $6,000 installed
- Longer runs, corners, steps, caps: $6,000 – $9,000 installed
- Base excavation and rebuild: adds $500 – $1,200 depending on old base depth
- Decorative cap upgrade: adds $8 – $15 per linear foot
We also work with Unilock-compatible product lines alongside brands like KraftMaid, Cambria, and Silestone for the hardscape side of a project, but for fence work we stay with Unilock because the modular dimensions are consistent year over year.
DIY or Call Us?
If your fence is shifting or leaning, the first thing any Riverside homeowner should check is whether a sprinkler valve or drainage issue is saturating the soil at the base. That’s a safe homeowner check: look for wet spots, mud staining on the blocks, or water pooling after your irrigation cycle runs. What we don’t recommend is tearing out a Unilock fence run by yourself when the base has failed. Each block weighs 20 to 40 pounds, a wobbly post course can drop blocks on your feet, and a half-disassembled fence is easier to knock over than most people realize. You pull the wrong block, and the section above it comes down. We’ve repaired DIY demo jobs where the homeowner ended up with a pile of broken blocks and a bill higher than the original repair would have cost. Give you a number before we pick up a tool – that’s just how this works. Call (341) 895-1170 and we’ll walk the fence line with you.
FAQs
A properly installed Unilock fence on a compacted rock base lasts 25 to 40 years in Riverside’s climate. The blocks themselves won’t fail; the base and joint sand are what determine lifespan. If the original install cut corners on base prep, you’ll see movement in the first five years.
Yes, if the base under the affected section is still stable and we can match the block color. We rebuild sections from the base course up, resetting posts and re-compacting as we go. Call (341) 895-1170 and we’ll tell you honestly whether a section repair or a full replacement makes more sense for your situation.
Most Unilock fence replacements in Riverside take two to four days on site, depending on how much old base material has to be removed. Smaller section repairs can go in one day. You’ll get a specific schedule in writing before we start, and our crew shows up inside the arrival window we give you.
We stock common Unilock block, cap, and corner units on the truck for quick section repairs. If your job needs a discontinued color match or a larger quantity, we order direct from Unilock distribution and factor the lead time into your written estimate. Call (341) 895-1170 for an exact match check and a free written estimate.
Penhallow Remodeling Riverside is an independent service provider and is not affiliated with Unilock. We install Unilock-compatible fence systems with a written price, a real arrival window, and a 365-day guarantee on the work. Every technician who walks onto your property is background-checked and in uniform, and a live person answers the phone 24/7. If the work fails inside the guarantee period, we fix it at no charge – that’s the Kingswell standard and it’s in writing on every job we do.
Ready for a written number? Call (341) 895-1170 to schedule your free Unilock fence installation estimate in Riverside. Trevor Nash and the Penhallow Remodeling Riverside team will walk the site, explain what’s failing and why, and hand you a written price before any work begins.
Written by Trevor Nash, Owner, Penhallow Remodeling Riverside at Penhallow Remodeling Riverside, serving Riverside and nearby areas.
