How tall can a retaining wall be?

We build walls from 2 feet (garden walls) up to 12+ feet (engineered terraces). Walls over 4 feet require an engineer's stamp and permit.

What's the most important part of a retaining wall?

What you can't see — drainage. A wall without proper perforated drain tile, crushed-stone backfill, and geotextile separator will fail within 5–10 years no matter how good the face stone looks.

Can you build into a slope or only against existing soil?

Both. We can cut into a hillside for a benched terrace or build a freestanding wall to create a level yard above grade. Each requires different drainage and structural approach.

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Engineered Retaining Walls in Massachusetts

Functional and attractive retaining walls to protect and define your landscape.

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Common retaining wall problems we solve

Existing wall is leaning, bulging, or showing failed courses
Slope behind house is eroding and threatening foundation
Need terraced gardens or usable yard space on a sloped lot
Driveway edge needs retention to prevent grade collapse
Old railroad-tie wall is rotting and needs permanent replacement

Recent project

Fieldstone retaining wall + steps

Materials

Segmental block (Versa-Lok, Unilock, Allan Block)
Boulder retaining walls (locally sourced)
Natural stone (fieldstone, granite)
Poured-in-place concrete with stone veneer
Geogrid reinforcement layers

What we inspect

Footing depth below frost line (48")
Drainage tile behind wall (perforated pipe in crushed stone)
Geotextile separator between backfill and native soil
Geogrid reinforcement layers (mandatory above 4 feet)
Backfill compaction in lifts (max 8" per pass)

Retaining Wall FAQ

How tall can a retaining wall be?: We build walls from 2 feet (garden walls) up to 12+ feet (engineered terraces). Walls over 4 feet require an engineer's stamp and permit.
What's the most important part of a retaining wall?: What you can't see — drainage. A wall without proper perforated drain tile, crushed-stone backfill, and geotextile separator will fail within 5–10 years no matter how good the face stone looks.
Can you build into a slope or only against existing soil?: Both. We can cut into a hillside for a benched terrace or build a freestanding wall to create a level yard above grade. Each requires different drainage and structural approach.