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Process for Building a Barn in Middlesex County

A practical guide for livestock farmers planning a new barn, barn expansion, manure storage, or livestock facility in Middlesex County.

Before You Build

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Before a livestock barn is built or expanded in Middlesex County, the first step is not concrete, posts, or trusses. The first step is determining whether the proposed project can meet Ontario nutrient management and land use requirements.

Middlesex County supports a diverse livestock and cash crop sector across Adelaide-Metcalfe, Strathroy-Caradoc, Middlesex Centre, Thames Centre, North Middlesex, Lucan Biddulph, and Southwest Middlesex. Dairy, beef, poultry, and swine farms sit alongside grain operations, and the proximity to London and surrounding country residential development makes MDS planning especially important.

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Farmers should confirm:

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Whether the project triggers a Nutrient Management Strategy

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Whether a Nutrient Management Plan is also required

 

Whether the site works under MDS I or MDS II

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Whether manure storage is adequate

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Whether the land base can support the nutrients generated

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Whether the project creates setback issues with neighbours, roads, lot lines, or sensitive land uses

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Step-by-Step Barn Building Process

Step 1: Define the project

  • New barn or expansion

  • Livestock type​

  • Final livestock capacity

  • Housing system

  • Manure type

  • Storage method

  • Proposed location

Step 2: Calculate nutrient units

Nutrient units are one of the first screening tools for determining whether a project may trigger NMS or NMP requirements.

Step 3: Review NMS/NMP requirements

If the farm is building or expanding livestock, an NMS is commonly required. Larger operations may also require an NMP depending on nutrient units and land application requirements.

Step 4: Check MDS and setbacks

Minimum Distance Separation is often one of the biggest constraints on barn siting. MDS can affect whether the proposed barn location works before design or construction begins.

Step 5: Review manure storage

Storage must be appropriate for the livestock system, manure type, and regulatory requirements. Liquid manure, solid manure, permanent storage, and temporary field storage all have different management concerns.

Step 6: Prepare supporting documentation

  • Farm sketch

  • Barn location 

  • Livestock numbers

  • Manure storage details

  • Land base

  • Crop rotation

  • Soil tests if needed

  • MDS information

  • NMS/NMP information if triggered

Step 7: Submit for approvals

Municipal approvals, building permits, nutrient management approvals, and supporting documentation may all need to align before the project proceeds.

Common Delays in Middlesex County

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Waiting too long to calculate nutrient units

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Choosing a barn site before checking MDS

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Underestimating manure storage needs

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Missing land base information

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Not knowing whether NMS or NMP is required

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Assuming the municipality will sort out nutrient management later

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Not starting the regulatory process early enough

Why Local Knowledge Matters

Barn projects in Middlesex County need to satisfy provincial nutrient management rules, but the farm context is local.

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In Middlesex County, country residential lots and rural severances can create MDS II constraints that did not exist a decade ago. Confirming setbacks from neighbouring residences and planned uses early in the process protects your barn project from late-stage redesign.

How LandLogic Helps

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Nutrient unit calculations

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NMS and NMP preparation

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MDS review

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Manure storage planning

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Farm visit

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Documentation support

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Approval guidance

Need help walking through this in Middlesex County? Contact us or learn about our nutrient management consulting in Ontario.

Planning a Barn Project in Middlesex?

Before you finalize a barn site or submit a permit package, confirm the nutrient management and setback requirements.​

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Can I Build a Barn Here?

Check whether a proposed barn location may be constrained by MDS, setbacks, or nearby land uses.

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Use the Advanced Preliminary MDS Screening Tool

Estimate detailed MDS-related setback planning for livestock barns and manure storage.

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Calculate Nutrient Units

Estimate livestock nutrient units to help determine whether NMS or NMP requirements may be triggered.

Process for Building a Barn in Middlesex County FAQs

What is the first step before building a livestock barn in Middlesex County?

Should I talk to the municipality before starting an NMS

When should MDS be calculated for a barn project?

Do I need final barn drawings before starting the NMS?

What happens after the NMS is approved?

Can a building permit be issued before the NMS is approved?

• NMS • NMP • NASM • GNF • Southwestern Ontario

Need a NMS or NMP?

For barn builds, livestock expansions, manure storage projects, 300+ nutrient unit operations, NASM, or greenhouse nutrient feedwater planning, call or text LandLogic to get started.

Call 226-222-4293 →

LandLogic Nutrient Management

Professional Nutrient Management Plans, Strategies, and NASM Plans for Southwestern Ontario farmers. Certified Crop Advisor with 15+ years of agricultural experience.

Contact

📞 226-222-4293

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© 2026 LandLogic Nutrient Management Plan Ontario. Based on Ontario nutrient management requirements (O. Reg. 267/03). 
Serving Chatham-Kent, Lambton, Elgin, Middlesex, and Essex counties.

Information on this website is for planning and educational purposes only. Although LandLogic works to provide accurate and useful information, errors, omissions, outdated information, or changes in regulations, forms, fees, contacts, mapping, or approval processes may exist. Final requirements must be confirmed with the appropriate municipality, county, conservation authority, OMAFA/provincial review process, builder, designer, engineer, and approval agencies. LandLogic does not issue permits, guarantee approvals, or replace official regulatory review.

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