# How to Install & Repair Fences on the Central Coast: A Step-by-Step Guide
I've been fixing and installing fences in San Luis Obispo for years. Every spring I get calls from homeowners who've just noticed winter storm damage, rot creeping up from the damp soil, or posts that have started leaning. The Central Coast throws some specific challenges at fences — our salt air corrodes metal hardware faster than inland areas, our clay-heavy soil can shift and heave, and the marine layer keeps things damp longer than you'd expect.
This guide walks you through what to expect whether you're building from scratch or patching up damage. Some of this you can handle yourself. Some of it, honestly, is where I come in.
Step 1: Assess What You're Actually Working With
Before you do anything, spend an afternoon walking your property line. Look at every post, every board, every connection.
Here's what I'm checking when I walk a fence:
Take photos. You'll want these for an estimate, and they'll help you remember exactly what needs fixing.
Step 2: Decide: Repair, Partial Replacement, or Full Install?
This is the fork in the road.
Repair is your move if you've got one or two bad boards, a handful of loose fasteners, or a gate that needs adjustment. I did a job in Los Osos last spring where a homeowner just needed six rotted fence boards replaced and the gate rehung. Simple. One afternoon.
Partial replacement comes up when an entire section is compromised — usually from water intrusion or settling soil. I had a fence on Foothill Drive where storm damage took out about 10 feet. We pulled those boards and posts, set new posts properly (deep, on gravel, with drainage), and hung new cedar boards. The rest of the fence stayed.
Full installation is what you're looking at if the fence is near end-of-life, or you're building something new. This is where planning matters.
Step 3: Plan the Layout (New Installation)
If you're installing new, start here.
First, mark your property line. This isn't me being fussy — San Luis Obispo County has specific setback rules, and neighbors have opinions. I've walked enough boundary disputes to tell you: get it right before you dig. If you're unsure, hire a surveyor. It's worth it.
Next, mark post locations. For most residential fences, that's 6 feet apart. Taller fences (like 6-foot privacy) might need posts every 5 feet for stability. On our coastal slopes, posts at uneven terrain need thoughtful spacing so you're not fighting the grade.
Use string and spray paint. Walk the line. Adjust for trees, drainage swales, and anything else that'll make your life harder later.
Step 4: Choose Materials That'll Survive Here
I'm direct about this: material choice makes the difference between replacing a fence every decade and keeping it solid for 20+ years.
Cedar or redwood: Beautiful, works well, but needs regular sealing in our damp marine layer. If you go this route, plan on resealing every 2–3 years or the wood will start cupping and checking. I recommend western red cedar — it's got natural oils that hold up better than standard pine.
Pressure-treated lumber: Holds up longer. Not as pretty, but it'll outlast unsealed wood. Good for utilitarian fences.
Vinyl or composite: Won't rot. Won't need sealing. It doesn't expand and contract the way wood does, which matters on the Central Coast where we swing from damp winter mornings to dry summer afternoons. The trade-off is upfront materials and it can look plastic in certain light.
Metal (steel or aluminum): Aluminum is corrosion-resistant and light. Steel is strong but needs paint maintenance. Stainless is bulletproof but it's the most material-intensive choice.
For posts, I always specify concrete footings. Dig below the frost line (12 inches here in San Luis Obispo), set posts in concrete. In our soil conditions, posts just sitting in treated wood and soil will rot from below in 5–7 years. Concrete costs you now, but you're not replacing posts in five years.
Step 5: Repair Work — Where You Can DIY
Small repairs are absolutely doable.
Replacing individual boards: Cut out the bad one, measure it, cut a replacement, bolt it on with galvanized or stainless lag bolts (16-gauge, 3-inch). Tighten it snug. Don't overtighten — you'll crack the wood.
Fixing a leaning post: If it's early-stage lean and the concrete footing is intact, sometimes I can bolt a sister post (a second post bolted tight to the first) to stabilize it. That's a day's work. If the footing has failed, you're pulling that post and reset. That's bigger.
Gate repairs: Sagging gate? Usually it's the hinges settling or the frame racking. Willy can rehang it with new hinges. If the gate frame itself is twisted, it might need rebuilding — that's when you call me.
The one thing I'll warn you about: if you start pulling boards and find rot spreading into the posts, stop. Call Willy. Structural issues hide. I've seen a homeowner pull one board thinking it's isolated, only to find the post is soft halfway through. That means new post, and now you've got a bigger project than you planned for.
Step 6: Installation — Where It Gets Technical
If you're installing fence from scratch, here's what the process looks like when I'm doing it:
1. Mark and dig post holes — 3 feet deep minimum on the Central Coast, sometimes deeper if we hit clay that won't drain. Mark each hole with spray paint first.
2. Set posts plumb — Use a 4-level or a post level. Check two directions. Posts that lean now will get worse as ground shifts.
3. Concrete footings — Mix per bag directions (usually a 50-pound bag of QUIKRETE per hole). Set posts in concrete, brace them, let cure 24 hours. Don't skip the curing time.
4. Hang rails — Horizontal support beams go between posts. These carry the weight of the boards. Space them evenly.
5. Attach boards or panels — Use stainless or galvanized fasteners. Cedar can swell and move — leave a tiny bit of play. Don't screw boards tight enough that seasonal movement cracks them.
6. Gate installation — Measure the opening twice. Hang the gate with heavy-duty hinges and a proper latch. A gate takes a lot of stress.
This is usually 2–5 days depending on fence length and site conditions.
Step 7: Maintenance — Why It Matters
A fence installed right still needs attention.
Every spring (right now, actually), walk the fence. Look for loose boards, rust starting on hardware, and any drainage issues around posts. If water pools around a post, that's a rot timer starting. I've seen this on properties in Cambria and Morro Bay where the coastal humidity and poor drainage combine to fail a fence in half the time.
For wood, seal it every few years. For metal, touch up rust spots before they spread. For gates, keep hinges oiled and the latch working smooth.
When to Call Willy
I'll be honest: some fence work is easy. Some of it isn't. If you're pulling rotted posts, dealing with structural shifts, or installing something taller than 4 feet, that's where experience saves you headaches. I know the soil conditions here. I know what the county requires. I know when a "small repair" is actually a sign of bigger problems underneath.
I've got same-week availability for most jobs, and I'll give you a straight estimate after I see what you're dealing with. No surprises.
> Need Fence Installation & Repair in San Luis Obispo? Call Willy directly.
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> 📞 (805) 440-3887
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> ✉️ evolutionhomeimprovement1@outlook.com
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> 📍 1041 Southwood Dr, Ste L, San Luis Obispo, CA 93401
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> 🕒 Monday–Saturday, 8 AM – 6 PM
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> Free estimates within 24 hours. Same-week availability.
Written by
Willy — Evolution Home Improvement
Serving the Central Coast of California since 2015. (805) 440-3887