Planning Ranges for Fairfax County
Retaining walls are priced mostly by the face square foot — height times length. Here is what residential projects in Fairfax County typically run:
- Timber walls: $5,000 to $12,000. Best for shorter walls and terraced beds. Least expensive up front, shortest life.
- Segmental block walls: $7,000 to $18,000. The most popular choice — good looks, good life, fair price.
- Poured concrete walls: $9,000 to $22,000. Strongest option, often engineered. Carries driveways and structures.
- Natural stone walls: $12,000 to $25,000. Premium look and the longest life. Skilled stonework costs more per foot.
These are planning ranges, not quotes. Material prices shift year to year, and every slope is different — access, drainage, soil, and permits all move the number. Your written quote after we walk the site is the real number.
What Moves Your Quote Up or Down
- Height. Cost grows fast with height. A four-foot wall is not twice the work of a two-foot wall — it needs a wider base, more drainage, and usually engineering and a permit.
- Length. Longer walls spread setup costs thinner, so the per-foot price often drops a little on big runs.
- Access. If machines and material deliveries cannot reach the site, everything moves by hand or by conveyor. Tight backyards cost more to build in.
- Demolition. Tearing out and hauling away a failed wall adds real money — failed concrete and stone are heavy.
- Drainage. Every wall needs drainage, but a site with springs, a high water table, or water running off a neighbor's lot needs a bigger system.
- Engineering and permits. Walls four feet and taller generally need engineered plans and a Fairfax County permit. That is a real cost — and it buys you a wall that is proven on paper.
Where Homeowners Overpay
The most expensive wall is the one you build twice. A cheap wall with no drainage behind it fails in five to eight years in our clay, and the replacement costs more than doing it right the first time. Spend the money on drainage and compaction — the parts you never see — before you spend it on a fancier face.
Getting an Honest Quote
A real quote comes from a site visit, not a phone call. The builder should measure the slope, probe the soil, and talk drainage before naming a number. Get the price in writing, with the material, the drainage plan, and the permit responsibility spelled out. That is exactly what we do — start with our contact form.