9 Trees Landscape Construction
Retaining wall installation contractor · Columbus, OH
Contact and location
| Address | 5522 Center St |
|---|---|
| Phone | (614) 921-9595 |
What to confirm before booking
- Ask who stamped the design, and ask to see the plan for your retained height and surcharge.
- Ask what the quote includes for excavation, geogrid, drainage aggregate, pipe and disposal.
- Ask what the warranty covers, how long it runs, and whether it survives a change of owner.
Local cost context
Retaining wall construction in Columbus sits inside the national bands published on this site: block wall at $4,500–$10,500, checked 8 November 2026. That is a planning band, not a quote from this firm. See the cost guides →