Estimate • Versa-Lok Retaining Wall
Prepared for Pamela • Valid 15 days • Photo-based assumptions
Location: 15214
Tight hillside access
Slope ~40–45°
Versa-Lok Standard + caps
Project Snapshot (from photo)
- Replace failing cast-in-place concrete wall with Versa-Lok units and matching caps.
- Estimated size: ~36 ft run; height ~5 ft → ~3 ft (avg ≈ 4 ft) ⇒ ~144 ft² face.
- Compacted aggregate base, #57 backfill, non-woven filter fabric, 4″ perf drain to daylight.
- Geogrid reinforcement (2 layers) at the taller section; final grading & cleanup.
Itemized Estimate (20% markup included)
| Item | Qty / Notes | Amount |
|---|---|---|
| Demolition & Haul-off of Existing Concrete Wall | ~4 yd³, tight access | $2,200.00 |
| Versa-Lok Blocks (~216) & Caps (~32), pins/adhesive | 144 ft² @ ~1.5 units/ft² | $2,394.00 |
| Aggregates (base ~3 yd³; #57 backfill ~8 yd³) + deliveries | Material & freight | $645.00 |
| Drainage (4″ perf pipe, outlets, fabric) | ~40 ft pipe + non-woven | $160.00 |
| Geogrid Reinforcement | ~288 ft² (2 layers) | $346.00 |
| Equipment (mini-excavator + breaker, plate compactor, dumper, fuel) | 1 week | $3,400.00 |
| Labor (install only; tight site, hillside) | ~144 ft² @ ~$35/ft² | $5,040.00 |
| Erosion/Safety Controls & Mobilization | Silt, access, PPE | $850.00 |
| Subtotal | $15,034.60 | |
| Contingency (10%) | $1,503.46 | |
| Contractor Markup (20%) | $3,307.61 |
Total Installed Price (for Pamela)$19,845.67
Execution Timeline (5 work days)
Day 1 Mobilize & Demo Start
Access prep, brush trim, erosion controls, begin concrete demo in short sections; base trench layout.
Access prep, brush trim, erosion controls, begin concrete demo in short sections; base trench layout.
Day 2 Base & First Course
Finish demo/haul; compact base (6–8″ in lifts); set & level first course to ±⅛″.
Finish demo/haul; compact base (6–8″ in lifts); set & level first course to ±⅛″.
Day 3 Drain + Build
4″ perf drain to daylight, #57 backfill; stack to 2–3 courses; install geogrid layer #1 at tall section.
4″ perf drain to daylight, #57 backfill; stack to 2–3 courses; install geogrid layer #1 at tall section.
Day 4 Grid #2 & Backfill
Continue courses; geogrid layer #2; staged backfill/compaction, alignment & batter checks.
Continue courses; geogrid layer #2; staged backfill/compaction, alignment & batter checks.
Day 5 Caps & Finish
Set caps with adhesive; final grading, outlet protection, cleanup, walkthrough.
Set caps with adhesive; final grading, outlet protection, cleanup, walkthrough.
Weather or rock seams may push cap/finish to Day 6; contingency hours are priced in above.
Assumptions & Exclusions
- Scope is derived strictly from the photo (~36′ × avg 4′). Engineering/permits not included here.
- Drain assumed to daylight within ~40′. No fencing, lighting, or landscaping beyond final grading.
- Unknown utilities, groundwater control, or additional haul-offs are change-order items.
Payment terms: 30% to reserve & stage materials, 50% at start, 20% at substantial completion. Questions? We’re happy to walk the site with you and finalize quantities before scheduling.