How to Plan a Retaining Wall Build Without a Disaster
How to Plan a Retaining Wall Build Without a Disaster
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Most Wall Failures Start Before the First Block Is Laid
Retaining walls fail for two main reasons: poor construction — or poor planning. If you don’t think through slope, soil, drainage, and material before the job starts, you’re setting yourself up for frustration, delays, or a rebuild. Here’s how we plan retaining wall projects to ensure they’re structurally sound and meet all requirements from day one.
1. Survey the Site for Grade, Access, and Load
1. Survey the Site for Grade, Access, and Load
Understand existing slope and height changes
Assess soil type (clay, sand, rock)
Note nearby structures, driveways, or slopes
Observe drainage flow during storms
Check equipment access for excavation and hauling
We use laser levels, slope calculators, and experience to map out the layout before design.
2. Define the Wall’s Purpose Clearly
2. Define the Wall’s Purpose Clearly
Ask yourself:
Is the wall decorative or structural?
Will it hold back soil, support a patio, or frame a bed?
Does it need to create flat space or improve access?
Purpose affects materials, permitting, and construction.
3. Choose the Right Material for the Job
3. Choose the Right Material for the Job
Block walls: Uniform, engineered, HOA-friendly
Boulders: Natural, heavy-duty, ideal for rural or steep lots
Timbers: Budget-friendly but shorter lifespan
Concrete/CMU: Strongest option, highest cost
We guide clients to pick based on long-term needs and style.
4. Plan Drainage and Base Prep from Day One
4. Plan Drainage and Base Prep from Day One
Every wall includes:
Crushed gravel base compacted in layers
French drain or perforated pipe with gravel backfill
Geotextile fabric separating gravel from soil
Geo-grid reinforcement if height or slope requires it
Proper water management is essential for wall longevity.
5. Check for Permits and HOA Approval
5. Check for Permits and HOA Approval
Walls over 4 feet require Boulder County permits
Tiered walls close together may be treated as one wall
HOAs often require material samples, layout, and finish specs
Skipping permits can cause delays or forced removal.
6. Schedule Construction with Access and Weather in Mind
6. Schedule Construction with Access and Weather in Mind
Ensure clear space for excavation, equipment, and materials
Avoid building during snowmelt or saturated ground conditions
Proper compaction and drainage rely on dry conditions
Timing impacts quality and durability.
Related Services:
Related Services:
Want a Wall That’s Built Once and Built Right?
Want a Wall That’s Built Once and Built Right?
We’ll walk your site, handle permits, and build a wall that’s made to last — not just look good at first.
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