Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Fence Installation Across Westmont
Fence installation in Westmont typically runs $3,500 to $9,000 for a standard residential project, depending on material, linear footage, and what our crew finds underground when we start digging. Most jobs wrap within 3 to 7 working days once the county permit clears. If you’re pricing a new wood privacy fence along a typical Westmont lot line, call (470) 298-9650 and we’ll put a written number in your hand before anyone picks up a shovel.
We’re Rowan Construction Group. We’ve been writing flat-price fence contracts since 2007, and we know Westmont’s quirks better than most: the unincorporated county permitting path, the older lots with buried surprises, the Santa Ana winds that test a fence before the concrete’s fully cured. This page is built to explain what that actually means for your project, in numbers.
Why Rowan Construction Group Is Westmont’s Preferred Fence Installation Company
Westmont is unincorporated Los Angeles County. That sentence changes everything about how a fence permit gets pulled, inspected, and signed off. A contractor used to incorporated cities like Inglewood or Hawthorne walks into a different animal here: LA County Department of Public Works and Building and Safety handles every permit, every inspection, and every code-compliance matter. We’re comfortable with that system because we work inside it on a regular basis. Our Fence Installation team has pulled county permits for fences across Westmont, including jobs that started as simple replacements and turned into retroactive legalization once we found the old structure had zero permit history.
Rowan Construction Group is led by Grant Rowan, and our standing offers are printed, not promised: a written price before work starts, a signed change order before any change proceeds, and a 365-Day Done Right Promise. That last one means if the fence isn’t done right, we make it right. It’s backed by a terms page, not an asterisk. We tell you this up front because the three-star-review reader checks.
When you call (470) 298-9650, a live person answers. The crew that shows up in Westmont is background-checked and uniformed, and you get a documented photo record of the job as a standard deliverable. Not an upgrade. That’s the record you keep when the inspector asks questions or you sell the house in five years.
Our Fence Installation Services in Westmont

Wood Fence
Wood remains the most common fence material in Westmont, and for good reason: the post-war single-family lots here run modest in size, and a cedar or redwood privacy fence gives you the enclosure without overbuilding. We quote clear grades, not mystery lumber. A 6-foot cedar board-on-board privacy fence along a typical Westmont side yard falls inside that $3,500 to $9,000 range, depending on footage. We set posts below the frost line and beyond the dry-summer crack zone, which matters more than most people realize in this climate.

Privacy Fence
Privacy fences in Westmont do two jobs: block sightlines and stand up to wind. The fall Santa Ana events hit this area harder than the beach cities, and a privacy fence with shallow footings becomes a sail. Our standard for privacy fence posts is deeper than the county minimum where soil conditions call for it, because we’d rather overbuild than come back in March to straighten a leaning run. We’ll walk the property line, mark it, and show you the depth we’re quoting before you sign.

Fence Repair
Fence repair in Westmont is rarely just a board swap. The older lots here hide old unpermitted fence work, abandoned posts set in undersized concrete, and chain-link framework buried under later additions. When we repair, we document what’s there: the post spacing, the footing depth, the condition of the concrete, the rot patterns. Then we tell you what it means and write the fix into a flat price. No exploratory work billed by the hour.

Fence Gates
A sagging gate on a Westmont property usually comes down to one of two things: the post that carries the hinge wasn’t set deep enough, or the gate frame was built light to save money. We build gates that swing true five years in. That means a steel post core on heavy gates, adjustable hinges, and a frame we stand behind under the 365-Day Done Right Promise. We also handle automatic driveway gate retrofits where the county electrical requirements get interesting.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
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AfterTrusted Brands We Service in Westmont
We install and service fences across the brands that show up most in Westmont’s older housing stock and its newer rebuilds. On the higher end, you’ll see names like Belgard and Techo-Bloc on paver and wall integration; for gates and hardware, we stock what we need to avoid putting a one-day job on hold for a part. Our parts relationship means a Westmont repair call doesn’t turn into a two-week wait because a distributor ships out of state. We’ve also worked around prefab structure systems from companies like Dvele and Mighty Buildings where a fence line meets an ADU or a back-house conversion, and we understand how the county views those interactions. We keep the quote honest because we know the sourcing.
Common Fence Installation Problems We See in Westmont Homes

- Unpermitted old fences. Westmont has no city code enforcement, so a large share of the fences we replace were never permitted. That means no record of footing depth, post spacing, or materials. We document what we find, pull the right county permit, and bring the new work to current LA County code before any inspection happens.
- Post holes hitting buried debris. Westmont’s older lots have decades of unpermitted additions and demolished structures. Our crews regularly hit buried foundation remnants or abandoned utility lines in the middle of a fence run. We write a concrete-removal and unknown-line allowance into the contract up front so that discovery is a written change order, not a surprise invoice.
- Santa Ana wind failures. Fall winds in Westmont test fences before the concrete has fully cured. Contractors who don’t account for LA County’s footing depth requirements and curing windows end up with leaning sections by November. We schedule pours and inspections so the fence is solid before the wind season peaks.
- Vinyl and aluminum over old post holes. When a vinyl or aluminum fence gets installed over old chain-link post holes without verifying the existing concrete or rebar, you get wavy top lines and fastener failures within a year. We core-check old posts before we build on them and tell you if the old concrete needs to come out.
Pricing for Fence Installation in Westmont, CA
A fence installation in Westmont runs $3,500 to $9,000 for most residential jobs. The two dominant materials land like this:
| Material | Typical Installed Range in Westmont |
|---|---|
| Vinyl Fence Installation | $3,500 - $9,000 |
| Aluminum Fence Installation | $4,000 - $10,000 |
What moves the number within that range: linear footage, post depth required by soil conditions, demolition and hauling of an old fence, and any county permit work triggered by unpermitted existing structures. A wood privacy fence on a standard 50-by-120 lot without surprises lands in the $5,000 to $7,500 band. The quote you get from us is a flat written price with a written scope and a written warranty. If you have a competitor’s quote already, bring it. We’ll review it line by line for free.
We Also Serve Cities Near Westmont

Rowan Construction Group handles fence installation and repair throughout the South Bay and beyond, including Fence Installation in Westmont and nearby work in Los Angeles, San Diego, San Jose, and San Francisco. When you call (470) 298-9650, we’ll let you know exactly when a crew can be in your neighborhood.
Serving Westmont, CA - Our Local Coverage Area
We’re based in the Westmont area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Fence Installation in Westmont

In most cases, yes. Westmont is unincorporated Los Angeles County, so fence permits run through LA County Department of Public Works and Building and Safety, not a municipal building department. Even same-height, same-location replacements typically require a permit when the work involves new footings or structural changes. The county also has specific rules about fence height, materials, and proximity to driveways and intersections that a local inspector will check. Call (470) 298-9650 and we’ll tell you what applies to your exact property before anything gets dug.
If your existing fence has no permit history, the new work doesn’t automatically get shut down, but the county will require documentation before sign-off. We’ve handled this many times in Westmont: we document the old post spacing, footing depth, and materials, then pull the correct permit for the new work and bring everything to current LA County code. The old unpermitted fence comes out; the new one goes in with a clean inspection record. It adds a step, but it protects you from a stop-work order and from trouble when you sell.
Santa Ana winds in the fall push against any new fence before the concrete has reached full strength, which takes time. If the footings aren’t deep enough or the job is rushed to beat a schedule, sections can lean or topple by November. We set posts to a depth that accounts for Westmont’s clay-heavy soil and dry-summer groundwater pullback, and we let concrete cure on a schedule that matches the work, not a sales promise. If you’re installing between September and December, the wind load is a real factor we factor into the quote and the build order.
Yes, but the unpermitted structure changes the permit conversation. The county looks at the whole picture, not just the fence line. We’ve done this in Westmont: an old garage conversion or addition with no permit history sits right at the boundary, and the fence has to be built around or alongside it while the county’s records get corrected. We can pull the fence permit, document the existing condition, and coordinate the inspection so the fence goes up without triggering a bigger problem. The written quote will include the permit work and any documentation time up front, not as a surprise add-on.
The difference is the authority. Westmont is unincorporated, so LA County Public Works and Building and Safety handles everything: fees, plan check, and inspections. Inglewood and Hawthorne have their own municipal building departments with different forms, different fee schedules, and different inspection windows. A contractor who pulls a lot of permits in those cities can still miss the county-only triggers in Westmont, like the specific documentation for unpermitted existing structures or the county’s rules about footing depth below the disturbed soil line. That’s the expertise we bring to every Westmont fence job.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Westmont since 2007.







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