Trade guide · Landscaping
Mark the site. Measure the change. Approve the new quantity.
Use five filled examples for soil, irrigation, drainage, plant substitutions, access, weather, utilities, and owner-requested additions.

The field rule
Every outdoor change needs a marked boundary and measurable unit.
Record who requested the change, the plan and quantity it replaces, the exact site boundary, the unit and measurement source, access and utility dependencies, price, weather effect, and who maintains living material after installation.
A customer flag is not a utility locate, a plant name is not a complete substitution, and “bad soil” is not a quantity. Use the actual jurisdiction, qualified professionals, tickets, photos, and approved samples.
Five filled examples
Site conditions translated into customer decisions.
Rocky or unsuitable soil and haul-off
Baseline: ordinary excavatable soil and 4 cubic yards export included. Discovery: marked zone E-01 contains rock/unsuitable material outside assumption. Authorize excavation, load, haul, and stated facility disposal at $185 per documented cubic yard beyond allowance, plus equipment at $[___]/hour if listed. Tickets and photos govern quantity; notify at 70%; stop at $4,500. Excludes hazardous/contaminated soil, blasting, dewatering, shoring, buried structures/utilities, imported structural fill, testing, and permit/design changes. Weather and facility closures extend schedule.
Irrigation conflict and zone revision
Finding: existing line/valve at I-03 conflicts with approved bed/edging layout. Change reroutes the specifically identified section, adds listed fittings/head or drip components, updates zone map, and performs project-specific operation observation for $1,760. Excludes unknown private utilities, controller replacement/programming beyond listed zone, pressure/source problems, unrelated leaks, electrical work, trench restoration outside boundary, and ongoing seasonal adjustment. Customer approves one-day irrigation interruption and provides controller/access information.
Drainage swale revision after grading observation
Observed: field elevations and runoff path differ from plan assumption at D-02; no guarantee of whole-property drainage is implied. Change revises the marked swale/collection area, adds [quantity] aggregate/soil, listed pipe or outlet only if specified, and restores listed surface. Includes survey/grade control stated in attachment and two weather-dependent days. Excludes engineering, foundation/waterproofing, municipal system, neighboring property, groundwater, roof drainage, erosion beyond work area, utilities, permit, and extreme-event performance. Stop for unlocated utilities, contaminated soil, or conditions outside marked area.
Plant unavailable at approved size
Specified: 12 × [plant/cultivar], [container/caliper], locations P-01 through P-12. Proposed: [substitute] because supplier confirms original unavailable by required date. Record quantity/size, mature form, appearance sample, exposure/water assumptions, availability, warranty source, establishment-care owner, and net $620 change. Customer selects substitute, waits until [date], or approves plan reduction/credit. Excludes guarantee of growth, bloom, wildlife resistance, exact natural appearance, irrigation redesign beyond listed emitters, replacements caused by neglected care, and maintenance after stated establishment period.
Owner expands beds during layout walk
Request by: [authorized owner] during marked-site walk [date]. Original 180 linear feet edging and 14 cubic yards mulch becomes measured 248 feet and estimated 19 yards. Add 68 feet at $[___]/foot and up to 5 yards at $[___]/yard, reconciled by installed measurement/delivery tickets, including ordinary prep and listed product. Adds $[___] estimated and one day. Excludes irrigation relocation except listed crossings, plant moves, soil amendment, root/rock removal, drainage, utility conflicts, disposal, future settlement/top-up, and ongoing weed/mulch maintenance.
Quantity worksheet
Landscape change register
Attach a marked plan, measurement record, tickets, and selection photos.
Create a landscape change order with JobSign →- Requester and baseline
- [Who/date/authority; plan/spec line; original area, quantity, allowance, material, access, maintenance]
- Condition or selection
- [Marked boundary, observed fact/customer request, photos, measurements, tickets, locate/permit/design dependencies]
- Revised quantities
- [Item, original, added/deleted, estimated/final, unit, measurement method, rate, extended price, credit]
- Materials and substitutions
- [Specified/proposed product or plant, size/quantity/source, appearance/performance/water assumptions, availability, warranty]
- Access, utilities, weather
- [Equipment path/limits, protection/restoration, public/private locates, outages, forecast, suspension, remobilization]
- Price and schedule
- [Fixed/unit/T&M/NTE, allowance, tickets, warning threshold, tax/markup, added days, payment]
- Exclusions and maintenance
- [Contamination, structural/engineering, unknown utilities, offsite drainage, permits, establishment care, ongoing maintenance]
- Approval
- [Selected option, revised total, signatures/authority/timestamps, final reconciliation and completed copy]
Verify license, contract, utilities, excavation, permits, environmental/site rules, plant suitability, irrigation, drainage design, safety, and maintenance for the actual jurisdiction and project.
Research basis
State rules and site decisions must stay specific.
Oregon’s Landscape Contractors Board provides one state-specific example: covered landscaping change orders must identify the changed scope, be agreed by both parties, and be written. Its contract thresholds and agreement method are Oregon rules, not national defaults.
EPA WaterSense explains that soil, slope, climate, plant grouping, irrigation zones, controllers, and maintenance influence landscape water use. Use local plant and design expertise; WaterSense guidance does not establish project-specific plant suitability or drainage performance.
- Oregon LCB: landscape contract and change requirements ↗
- Oregon LCB: written change orders ↗
- EPA WaterSense: soil and irrigation maintenance ↗
- EPA WaterSense: irrigation professionals ↗
Documentation guidance only, not excavation, utility, drainage, irrigation, horticultural, environmental, code, or legal advice.
Landscaping change order questions
What belongs in a landscaping change order?
Requester, baseline, marked boundary, quantities, materials, access, utilities, price, weather, schedule, maintenance, exclusions, and approval.
How should soil or haul-off be priced?
Use a defined unit, measurement tickets, rates, estimate, warning threshold, NTE, disposal assumptions, and stop point.
Are customer utility marks enough?
No. Follow applicable notification, locate, private-utility, tolerance-zone, permit, and safe-excavation requirements.
How should plant substitutions work?
Compare exact plants, quantities/sizes, availability, mature characteristics, site/water assumptions, price, care, warranty source, and selection.
Measure the changed site
Connect field quantities, access, utilities, weather, and approval.
JobSign helps landscapers attach plans and photos, price changed quantities, collect signatures, and share the PDF.
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