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Retaining walls and slope work for Finger Lakes hillside lots

Boulder walls, block walls, and the excavation, base, and drainage that keep them standing on a lakefront slope.

Around Canandaigua Lake, retaining walls aren't decorative — they're what makes a hillside lot usable. A wall holds back the slope so there's room for a driveway, a parking pad, a patio, or a flat piece of lawn between the house and the water. Built right, a wall lasts decades. Built without drainage or a proper base, it leans within five winters.

We excavate and build segmental block walls, natural boulder walls using local fieldstone and quarried stone, and timber walls where they fit. The unglamorous parts are the ones we care about: a compacted crusher-run base below frost influence, drainage stone and perforated pipe behind the wall, geogrid reinforcement on taller walls, and backfill that's placed in lifts rather than dumped.

Walls over four feet generally need an engineer's design and a building permit in most Ontario County towns. We'll tell you when that applies and work from the engineer's plan.

Retaining Walls & Slope Work in the Finger Lakes
Retaining walls work in Ontario County.

What's included

  • Retaining wall excavationCutting the slope, preparing the base trench, and staging materials on tight sites.
  • Segmental block wallsEngineered block systems for driveways, terraces, and lakefront grade changes.
  • Boulder and fieldstone wallsNatural stone walls that fit the lake-country look and handle drainage well.
  • Wall drainagePerforated pipe, clean stone, and filter fabric behind every wall — no exceptions.
  • Terracing and stepsMultiple short walls with landings instead of one tall wall, often better for slope and permitting.
  • Slope stabilizationRegrading, erosion matting, and stone armoring on banks that are moving.

Walls on the lake: frost, water, and the watershed

Freeze-thaw is the enemy of walls here. Water that gets trapped behind a wall freezes, expands, and pushes. That's why the drainage stone and pipe behind the wall matter more than the block on the front. It's also why we set the base on compacted stone rather than on the clay — clay heaves, stone doesn't.

Steep-slope and shoreline rules are part of every lakefront wall job. The Town of Canandaigua, Gorham, Middlesex, and South Bristol regulate work on protected slopes, and anything near the water may involve the DEC. We plan erosion control and permitting into the schedule rather than discovering it halfway through.

The best-looking walls in the area are boulder walls built from the same fieldstone that's been coming out of local farm fields for two centuries. They also drain naturally through the gaps. If your site has stone on it already, we can often use it.

What moves the price

  1. Wall height and length — taller walls need engineering, geogrid, and deeper bases.
  2. Material: block, boulder, or timber.
  3. Site access on steep lots, which can limit equipment size.
  4. Drainage and backfill quantities.
  5. Engineering and permit requirements for walls over four feet or near the lake.

Cost guides

Retaining Walls & Slope Work: questions we get

How much does a retaining wall cost?

Block and boulder walls are typically priced per square foot of wall face, with taller and engineered walls costing more per foot. A short landscape wall is a few thousand; a tall driveway or lakefront wall can be considerably more. We quote after seeing the slope.

Do I need a permit for a retaining wall in Ontario County?

Most towns require a building permit and engineered plans for walls over four feet tall, and any wall on a protected slope or near the lake may need additional review. We'll check with the town before we start.

Why do retaining walls fail?

Water and frost, almost always. No drainage behind the wall, a base set on clay, or backfill that was never compacted. The block itself is rarely the problem.

Can you build a wall on a lakefront lot without a big machine?

Yes. We use compact equipment for tight lakeside sites and stage material carefully. It takes longer than a wall with open access, but it's routine work for us.

Boulder wall or block wall?

Boulder walls look natural, drain well, and suit lake properties; block walls give a cleaner line and are easier to engineer tall. We'll walk you through both on site.

Get a quote

Call, or send the form and we'll get back to you — usually the same business day. Tell us the town and what you're trying to do; a photo or two never hurts.

(585) 575-0567

Serving Canandaigua, Ontario County, the Finger Lakes, and the Rochester area. Larger Syracuse-area projects by arrangement.

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