By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.
A vineyard management company farms your vineyard for you: pruning, canopy work, irrigation, pest and disease control, harvest scheduling and the crews to do it, under a written farming agreement. In Napa and Sonoma, many owners use one, from small estate vineyards to large ranches with absentee owners. Choosing the right manager, and writing the agreement well, protects both the fruit and the value of the land. This guide explains the service models, what to put in the agreement and how to judge the reports you get.
What does a vineyard manager actually do?
The manager runs the farming calendar and makes day-to-day decisions within a budget the owner approves.
| Season | Typical work |
|---|---|
| Winter (dormant) | Pruning, trellis and irrigation repairs, cover crops, erosion control checks, planning replants |
| Spring | Frost protection, shoot thinning, early canopy work, the first mildew and pest programs |
| Summer | Canopy management, irrigation scheduling, crop thinning, leaf removal, monitoring ripeness |
| Fall | Sampling sugar and acid with the winery, scheduling picks and crews, delivering fruit, post-harvest irrigation |
| All year | Pest and disease monitoring, spray records and permits, labor, equipment, reports to the owner |
Some firms also develop new vineyards and replant old blocks, help owners find grape buyers, run sustainability or organic programs, and report on the property as an asset for investors. Ask which of these a firm actually does, rather than assuming.
Which management model fits your vineyard?
| Model | How it works | Best for |
|---|---|---|
| Full-service management | The manager plans and performs all farming, bills costs plus a management fee, and reports to the owner | Absentee owners and estate vineyards |
| Custom farming | The owner or their farm manager directs the work; a contractor performs specific tasks such as pruning, spraying or picking, priced per task or per acre | Owners with their own vineyard expertise |
| Winery-managed | The winery buying the fruit farms the vineyard, sometimes under a lease or a long-term contract | Owners who want a single relationship for farming and fruit sales |
| Owner-operated | The owner employs a vineyard crew and manager directly | Larger operations with year-round work |
If a winery will farm your vineyard and pay rent, that’s a lease rather than management. Our vineyard lease guide compares the two.
How much does vineyard management cost?
Costs depend on the vineyard more than the manager: hillside versus valley floor, hand versus machine work, organic versus conventional programs, vine spacing and block size. Ask each firm to price your vineyard block by block, separating three kinds of cost:
- Cultural costs: labor, materials, fuel and equipment for the farming itself.
- The management fee: a fixed amount per acre, a percentage of costs, or a combination.
- Owner costs the manager doesn’t control: property tax, insurance, water and power, capital repairs and replanting.
The University of California’s cost studies are a good way to check whether a budget is realistic. The 2020 study for Napa County sets out the operations, labor hours and materials for a sample Napa vineyard, which you can line up against a manager’s proposal. Prices have changed since 2020, so compare the list of operations as much as the totals.
What should a farming agreement include?
- Scope: every task the manager is responsible for, and what needs the owner’s approval.
- Budget and approval limits: an annual budget by block, with a dollar limit above which the manager must ask first.
- Fees and billing: how the fee is calculated, what’s marked up, and the invoice detail you’ll receive.
- Labor: who employs the crews. Farm labor contractors must be licensed by California’s Labor Commissioner (California DIR); ask for the license and proof of workers’ compensation coverage.
- Pesticides and permits: who holds the restricted-materials permits, files use reports and keeps records.
- Insurance: the manager’s liability, auto and equipment coverage, with you named as additional insured.
- Fruit quality and harvest: who coordinates with the winery on picking decisions, and how disputes over fruit quality are handled.
- Reporting: what you get, and how often.
- Term and termination: notice periods that avoid a gap mid-season, and what happens to records and equipment at the end.
- Sale of the property: whether the agreement can be assigned to a buyer or ends on sale.
How do you judge a manager’s reports?
Good reporting lets you make decisions without walking every row. Look for:
- Budget versus actual by block, every month during the season
- Yield estimates before harvest and actual tons and prices after
- Spray and fertilizer records, with dates, materials and rates
- Irrigation use and well levels
- Notes on vine health, missing vines and blocks heading toward replanting
- Photos from the field and a short written summary
If a manager can’t show you these for another client (with names removed), they probably won’t produce them for you.
Sustainability and organic programs
Several certification programs cover North Coast vineyards. The California Sustainable Winegrowing Alliance runs a statewide third-party certification launched in 2010, and regional programs such as Napa Green, Fish Friendly Farming and Sustainability in Practice (SIP) are also used, according to Farm Progress. Organic certification requires a transition period without prohibited materials. Ask a prospective manager which programs they farm under today, how certification costs are billed and whether your grape buyers pay anything for it.
Choosing a manager
- Shortlist firms that farm in your AVA and with your varieties. Local experience with frost, mildew pressure and soils matters.
- Ask for references from owners of similar vineyards, and the wineries that buy their clients’ fruit.
- Request a block-by-block proposal for your vineyard, not a generic rate sheet.
- Check licenses and insurance, including the farm labor contractor license where it applies.
- Read a sample report and a sample farming agreement before you choose.
Matthew’s advice to buyers: talk to a management company early, before you buy, not after. A manager walking the blocks during escrow can price the farming, flag replanting needs and be ready on closing day. Our vineyard due diligence checklist shows where that fits.
Management and the value of your vineyard
A buyer values a vineyard partly on its condition and records, and those reflect how it’s been farmed. Neglected blocks, missing spray records or a history of rejected fruit cost money at sale time. Steady yields, clean records and long relationships with wineries support the price. Read how vineyards are valued for the detail, and selling a vineyard for the records buyers ask for.
Planning a new block or a replant? Many management firms also develop vineyards; see our vineyard development guide for the permits and timeline.
Questions owners ask
Do I need a vineyard management company for a small vineyard?
Not always, but many small-vineyard owners use one because the work is seasonal and skilled. The alternative is a custom-farming contractor directed by you or a consultant.
What’s the difference between a vineyard manager and a farm labor contractor?
A manager plans and supervises the farming and makes decisions. A farm labor contractor supplies workers for tasks. Many management firms do both, and when they supply workers, California’s farm labor contractor licensing rules apply.
Can a vineyard manager help me sell my grapes?
Some can. Firms with long winery relationships may introduce your fruit to buyers. Get any marketing role and fee in writing.
What happens to the management agreement if I sell?
It depends on the agreement. Some end on sale, others can be assigned to the buyer. Check before listing, because a buyer will ask.
Buying a vineyard and need a manager in place by closing? Tell us about the property, and see the full sequence in buying a vineyard in Napa or Sonoma. For the overview, go back to vineyards and wineries for sale.
Sources & notes
- UC Cooperative Extension: 2020 sample costs to establish a vineyard and produce winegrapes, Napa County
- California Department of Industrial Relations: farm labor contractor licensing
- Farm Progress: certified sustainable vineyards (February 6, 2020)
We don’t rank management firms on this page. This is general information, not agronomic or legal advice. Last reviewed October 2026 by Matthew Martinez.
