Do I need engineering drawings before requesting proposals?

No. A site plan, dimensions, climate data and a water analysis are enough for comparable budget-level proposals. Detailed drawings belong to the design stage that follows supplier selection.

What if my budget is not fixed yet?

Give a band rather than a number. A band tells manufacturers which specification tier is realistic and prevents proposals that are technically valid but commercially irrelevant.

Can proposals be requested for a phased project?

Yes, and phasing should be stated up front. Phase boundaries affect headers, pump sizing, control capacity and civil works, so retro-fitting them later is expensive.

Do I need engineering drawings before requesting proposals?

No. A site plan, dimensions, climate data and a water analysis are enough for comparable budget-level proposals. Detailed drawings belong to the design stage that follows supplier selection.

What if my budget is not fixed yet?

Give a band rather than a number. A band tells manufacturers which specification tier is realistic and prevents proposals that are technically valid but commercially irrelevant.

Can proposals be requested for a phased project?

Yes, and phasing should be stated up front. Phase boundaries affect headers, pump sizing, control capacity and civil works, so retro-fitting them later is expensive.

Procurement knowledge

What to define before requesting greenhouse or irrigation proposals

Before requesting proposals, define the crop and growing system, the cultivated area and site conditions, the water source with a recent analysis, available energy, the contracting model (supply-only, supply-and-install or turnkey), a budget band and a target start date. Without these, suppliers quote different scopes and the resulting prices cannot be compared.

Direct answer

What information should be defined before requesting greenhouse or irrigation proposals?

Crop, growing system and target production window drive nearly every downstream specification.
A water analysis determines filtration, dosing and material choices — it is the single most commonly missing input.
The contracting model changes the price more than most equipment options do.
A budget band is not a weakness; it prevents suppliers from quoting an unusable specification tier.

The nine inputs that decide the specification

Most quotation confusion is created before any supplier is contacted. When the requirement is incomplete, each manufacturer fills the gaps with its own assumptions, and the proposals that come back answer different questions.

Crop and variety, plus whether production is year-round or seasonal.
Growing system: soil, substrate, hydroponic, nursery benches or open field.
Cultivated area in m² or hectares, and whether phases are planned.
Site conditions: location, climate extremes, wind and snow loads, terrain and access.
Water source, availability by season and a recent water analysis.
Energy: grid capacity, diesel, solar or hybrid, and any grid-connection limits.
Automation and control level expected — manual, semi-automatic or fully controlled.
Contracting model: supply-only, supply-and-install, or turnkey with civil works.
Budget band, funding status and target start date.

Why an incomplete requirement costs money later

A missing water analysis usually surfaces as a filtration change order. An undefined contracting model surfaces as excluded civil works or excluded installation supervision. An undefined climate load surfaces as a structure that has to be re-engineered after the offer was accepted.

Fixing these inputs at the requirement stage costs nothing. Fixing them after contract award is where budget overruns typically originate.

How SeedMatchGroup uses these inputs

The defined requirement becomes the single brief every researched manufacturer answers, so returning proposals share one scope basis. SeedMatchGroup does not manufacture, install, engineer or finance equipment, and guarantees no yield, saving, ROI or payback.