If you're researching retaining wall pricing in Crossville or Cumberland County, you already know the terrain here works against you. Hilly properties, clay-heavy soils, and significant elevation changes mean most lots need some form of retention — and the cost varies more than most homeowners expect.
Cost Per Square Foot by Material (2026)
- Concrete block (SRW): $30–$50 per sq ft installed
- Natural limestone: $45–$75 per sq ft installed
- Cross-tie / timber: $15–$30 per sq ft installed
- Natural boulder: $45–$80 per sq ft installed
- Stone veneer over block: $55–$95 per sq ft installed
The 4-Foot Permit Rule in Tennessee
In Tennessee, retaining walls exceeding 4 feet in height (measured from the bottom of the footing to the top of the wall) typically require a building permit and, depending on the jurisdiction and wall height, a structural engineer's stamp. GleeWork coordinates permitting on applicable projects and will advise you during the estimate phase.
How Drainage Affects the Price
Drainage is the single most important factor in a retaining wall's long-term performance — and it adds cost. Every GleeWork retaining wall includes compacted drainage aggregate behind the wall face, geotextile filter fabric, and a perforated drain pipe at the base. This is not optional. Walls built without proper drainage fail — sometimes within a few years.
On more complex sites where water volume behind the wall is significant, additional drainage measures (channel drains at the top of the wall, extended pipe runs, or daylight discharge structures) may be recommended. We build this into the quote upfront so there are no surprises.
What a Typical Project Costs in Cumberland County
- Small garden wall (25–40 linear ft, 2–3 ft tall): $4,000–$9,000
- Mid-size landscape wall (40–80 linear ft, 3–4 ft tall): $8,000–$18,000
- Large structural wall (80+ linear ft, 4–6 ft tall): $18,000–$40,000+
Does the Wall Add Value?
In most cases, yes — especially on hillside properties in Crossville and Cumberland County where a retaining wall converts an unusable slope into functional outdoor space. Patios, parking areas, and garden tiers that become possible with a wall often return significant value relative to what the wall costs.
