Building your own 6-foot cedar privacy fence is entirely doable for a confident beginner with basic carpentry skills—and it saves $3,200+ over hiring a contractor (according to HomeAdvisor’s 2024 Cost Guide). Plan for 3–5 full days of work, depending on soil conditions and fence length. This tutorial covers a standard 100-linear-foot fence with 8' spans, pressure-treated posts, and kiln-dried cedar boards.
Project Overview
| Category | Details |
|---|---|
| Difficulty | Intermediate — requires digging, leveling, and consistent spacing |
| Time Required | 3–5 days (for 100 linear feet, working solo) |
| Estimated Cost | $1,850–$2,400 (materials only, mid-range cedar) |
| Tools Needed | Post hole digger, level, string line, circular saw, drill/driver, speed square, tape measure |
Tools & Materials
You’ll need both power and hand tools—and precise material counts. All prices reflect mid-2024 retail (Home Depot/Lowe’s) and assume standard 6' height, 8' panel spacing, and 100 linear feet total.
| Item | Qty | Unit Cost | Total |
|---|---|---|---|
| 4×4 pressure-treated posts (10') | 13 | $24.98 | $324.74 |
| 2×4 pressure-treated rails (10') | 26 | $5.22 | $135.72 |
| Cedar picket boards (1×6×6') | 210 | $4.97 | $1,043.70 |
| Concrete mix (50-lb bags) | 22 | $4.47 | $98.34 |
| Galvanized screws (3" exterior) | 2 lbs | $12.97/lb | $25.94 |
| Post hole digger (rental) | 3 days | $32/day | $96.00 |
- Don’t skip the post hole digger rental—even clay soil slows manual digging by 60% (Soil Science Society of America, 2022).
- Buy all cedar boards from the same lot: color and grain variation increases significantly between batches.
Step-by-Step Instructions
1. Mark Layout & Set Corner/End Posts
Use mason’s string and batter boards to establish straight lines. Drive 2×4 stakes at corners and gate openings. Stretch string between them at 6” above grade. Dig 10”-diameter holes 30” deep (below frost line in most zones). Set first corner post plumb using a 4-ft level on two adjacent faces; brace temporarily with 2×4s nailed to stakes.
2. Pour Concrete & Cure Posts
Mix concrete per bag instructions—aim for peanut butter consistency. Fill hole halfway, insert post, then fill completely. Tamp gently with rebar to remove air pockets. Let cure 24 hours before attaching rails.
"Never backfill with dirt instead of concrete—post movement within 18 months jumps from 3% to 37% in sandy soils." — National Association of Home Builders, Residential Construction Performance Guidelines, 2023
3. Install Line Posts & String Level Lines
Measure 8' intervals along the string line and mark center points. Dig and set remaining posts—use a transit or laser level to match top heights. Once all posts are cured, snap chalk lines across tops to guide rail placement at 12", 36", and 60" above grade (for three-rail support).
4. Attach Horizontal Rails
Pre-drill 1/8" pilot holes through rails into posts to prevent splitting. Use three 3" galvanized screws per rail-to-post connection. Check each rail for level and consistent spacing before securing fully. Keep rail ends flush with post faces—not recessed.
5. Install Picket Boards with Consistent Gaps
Start at one end and work toward the other. Use a 3/8" spacer block (cut from scrap cedar) between each board. Face-grain side out. Screw two screws per board per rail—top and bottom rails only. Stagger vertical seams across adjacent panels for wind resistance.
Tips & Common Mistakes
- Spacing error: Using a tape measure instead of a fixed spacer causes cumulative gaps that exceed 2" by panel 8—always use physical spacers.
- Post depth mistake: In Zone 5 (e.g., Chicago), frost depth is 42"—so 30" isn’t enough. Check your local building code’s required embedment depth.
- Rail sag: Don’t skip the middle rail. Without it, 6' cedar boards bow up to 3/4" over 8' spans (University of Maine Forest Products Lab, 2021).
Finishing Touches
Wait 4–6 weeks after installation before sealing—cedar must dry below 15% moisture content. Use a water-repellent preservative with UV inhibitors (like Ready Seal Cedar Tone). Apply with a lambswool applicator, not a brush, for even coverage. One coat suffices for protection; two coats deepen color but don’t extend life. Avoid painting—cedar expands/contracts too much, causing peeling within 18 months.
How deep should fence post holes be?
Dig to at least 6" below local frost line—or minimum 30" deep in southern climates. For 6' fences, bury 1/3 of post length underground (e.g., 10' post = 36" buried + 6' above grade). Always consult your municipality’s zoning board: some require deeper embedment for wind-load compliance.
Can I build a fence on my property line?
Only with written agreement from your neighbor if the fence straddles the boundary. Most states treat shared-line fences as jointly owned—meaning both parties share maintenance liability. Pull a property survey before digging; 68% of fence disputes stem from misplaced posts (property survey basics).
Do I need a permit for a backyard fence?
Yes—if over 6' tall, within 10' of a street intersection, or in a historic district. Permits cost $45–$120 and take 3–10 business days to approve. Many cities now require engineered drawings for fences over 8'. Check your city’s planning department website or call their zoning hotline.
What’s the best wood for a DIY fence?
Cedar and redwood lead for rot resistance and workability—but redwood is 32% more expensive (2024 USDA Forest Service data). Pressure-treated pine works for posts and rails but isn’t ideal for exposed pickets—it tends to warp and check. Avoid untreated spruce or fir—they last under 5 years in contact with soil.
How do I keep fence boards from warping?
Store boards flat and stickered (with 1×1 spacers) for 72 hours before installation. Pre-drill screw holes at top and bottom edges to relieve internal stress. Never face-screw near board ends—keep fasteners ≥1.5" from tips. And always install with growth-ring convex side facing outward.
Can I attach a gate to a DIY fence?
Absolutely—but reinforce the hinge-side post with a 6×6 or add a diagonal 2×4 brace inside the post frame. Use heavy-duty 6" strap hinges and a spring-loaded latch. Hang the gate 1/2" off the ground to allow for settling and drainage. For gates over 48" wide, add a gravity-style drop rod or automatic closer to prevent sagging.
A well-built fence adds real value—studies show a quality privacy fence boosts resale appeal by 3–5% in suburban markets (National Association of Realtors, Home Improvement ROI Report 2024). Take your time on layout and post setting: those first 12 hours determine whether your fence stands straight for 15 years—or leans like a tired sentry by year three.