Quick answer
Budget 60% for structure and hardscape, 25% for plants, 10% for design and permits, and 5% for contingency. On a $15,000 project that is roughly $9,000 structure, $3,750 plants, $1,500 design and $750 reserve — and expect the reserve to be used.
Set the number before the wish list
The most useful thing you can do is decide the total before you look at plants. A budget is a constraint that makes the design better: it forces choices about what matters.
Three numbers help:
- Comfortable: what you can pay in cash without touching reserves.
- Stretch: what you could pay with a year of disciplined saving.
- Borrowed: what you could finance without changing your monthly life.
Plan the project at the comfortable number. Use the stretch number only for structural work that is cheaper to do once.
A budget split that survives contact
| Category | Share | What it covers |
|---|---|---|
| Structure | 45–55% | Drainage, grading, walls, paths, patio, edging |
| Plants | 20–30% | Trees, shrubs, perennials, groundcover, soil |
| Systems | 10–15% | Irrigation, lighting, drainage outlets |
| Design & permits | 5–10% | Plan, survey, permit fees |
| Contingency | 5–15% | Rock, roots, surprises, change orders |
These are planning shares, not rules. A planting-only project shifts almost everything to plants. A sloped yard shifts it to structure.
Spend in the right order
- Drainage and grade. Water problems destroy everything above them.
- Soil. Test it, amend it, or replace it where the beds go.
- Irrigation. Cheaper before planting than after.
- Hardscape. Paths, walls and patios define the spaces.
- Trees and structural shrubs. They take years to mature; plant early.
- Perennials and seasonal color. The last 10%, and the easiest to phase.
Reversing this order is the classic budget mistake: a beautiful planting scheme installed in a wet, compacted bed.
Where budgets actually break
Rock and roots
Excavation finds what the estimate could not see. A $1,500 contingency disappears in an afternoon when a patio base hits bedrock.
Soil replacement
Builder fill, clay and rubble are common under new lawns. Amendment is cheaper than removal, but both cost more than the estimate assumed.
Irrigation extensions
Adding zones to an old system often means a new controller, valves and backflow. The “extend the irrigation” line can become a replacement.
Plant substitutions
Nursery shortages lead to larger specimens or different species. A plant allowance hides this until the invoice.
Permit requirements
Walls over a height, grading that changes drainage and some electrical work need permits and inspections. The fee is small; the delay is not.
Phase the softscape, not the structure
Phase one should always include drainage, grading, soil, irrigation and hardscape. Phase two can be trees and shrubs. Phase three can be perennials, bulbs and annuals.
Phasing plants is easy. Phasing drainage means digging up the planting later, which is why it belongs in phase one even if the beds wait.
Track the project like a project
Keep a simple sheet: budget by category, committed spend, change orders and remaining. Update it when a change order is proposed, not after the invoice. A project that feels expensive is often just unmeasured.
Ask for change orders in writing with a price before the work is done. “We’ll sort it out at the end” is how a 10% overrun becomes 30%.
When to stop
Stop and redesign if:
- The quote is more than 30% above budget and the scope has not changed.
- Two contractors independently flag the same hidden problem.
- The plant palette depends on a species you cannot source.
- You are borrowing at a rate you would not accept for a car.
A paused project is cheaper than a finished mistake.
Next: quote breakdown · financing.
FAQ
How much should I spend on landscaping?
A common planning benchmark is 5–10% of the home value for a full landscape renovation, but the right number is what you can spend without borrowing at a high rate. Spend first on drainage, grading and irrigation; those are expensive to redo.
Should I budget for a design?
Yes, for any project that changes layout, grade or hardscape. A $500–$2,500 plan prevents a much larger mistake and makes contractor quotes comparable.
How much contingency should I hold?
10–15% on a renovation where existing conditions are unknown, 5% on a straightforward install. Rock, roots, old footings and bad soil are discovered during excavation, not during the estimate.