The Typical Timeline
Most residential retaining walls take one to three weeks of construction once everything is approved and materials are on site. A short timber garden wall can go up in days. A long engineered stone wall with permits and inspections takes longer. Here is how the phases break down:
- Site visit and quote: 1 week. We walk the slope, talk materials, and deliver your written quote.
- Design and engineering: 1 to 3 weeks. Taller walls need engineered plans. Shorter walls skip this step.
- Permits: 2 to 6 weeks. Fairfax County review time varies by season and workload. We submit early.
- Construction: 1 to 3 weeks. Excavation, footings, wall build, drainage, backfill, and grading.
- Inspections and walkthrough: a few days. County inspections at key stages, then our final walkthrough with you.
What Causes Delays
Weather is the big one — you cannot pour footings or compact backfill in a downpour, and Fairfax County gets its share of wet weeks. Utility locates, HOA approvals, and material lead times for specialty stone can also add days. We build buffer into every schedule and tell you honestly where things stand.
Best Time of Year to Build
Spring and fall are ideal — dry enough for excavation, mild enough for concrete and mortar work. Summer works too, though heat and sudden storms slow things down. Winter builds are possible but concrete and mortar need protection from freezing, which adds cost. If your wall is failing now, do not wait for the perfect season — a leaning wall gets worse with every storm.
Start Early
Because permits take weeks, the best time to start is before you need the wall finished. Contact us and we will map a realistic schedule for your project.