Building Consent Site Plan for a Pergola in New Zealand

A building consent site plan for a pergola in New Zealand should show where the pergola will be built, how it relates to the existing house, boundaries, driveway, drainage, easements, services, and outdoor living areas.

Many pergolas are simple, open outdoor structures. But the details still matter. A pergola may be attached to the house, freestanding in the garden, built over a deck, placed near a boundary, or designed with posts, beams, screens, or a roof covering. Those details can affect whether building consent, resource consent, engineering, or council review is needed.

This guide explains what to show on a pergola site plan in New Zealand, when building consent may be needed, and how to avoid common drawing mistakes that can delay your project.

Do You Need Building Consent for a Pergola in New Zealand?

Not always. Building Performance explains that pergolas are simple-framed and unroofed structures often used as garden features. For the purposes of the building consent exemption, pergolas may be attached to a building or freestanding, and there is no size limit, but they must not be roofed. Building Performance

The key word is unroofed. If the structure has a solid roof, waterproof covering, enclosed roof system, or behaves more like a veranda, porch, patio cover, canopy, or carport, it may not be treated as a simple exempt pergola.

The New Zealand Government’s Can I Build It pergola tool also reminds homeowners that even if a project does not require building consent, the work must still comply with the Building Code. Can I Build It

What If the Pergola Is Roofed?

A roofed pergola is where many homeowners get caught. People often use the word “pergola” for open pergolas, louvre roofs, patio covers, shade structures, and roofed outdoor areas. But under consent rules, a roofed outdoor structure may be assessed differently from an unroofed pergola.

Building Performance has separate guidance for porches and verandas. It says building consent is usually not required for an attached porch or veranda up to 20 square metres, and that certain porches or verandas between 20 and 30 square metres may be exempt when designed or constructed by a Chartered Professional Engineer or Licensed Building Practitioner, depending on the exemption pathway. Building Performance

Can I Build It’s veranda guidance also says a veranda must not exceed 30 square metres, must be attached to an existing building, and must be at ground floor or first floor level for that pathway. Can I Build It

Because the difference between an open pergola and a roofed outdoor structure can change the consent pathway, always confirm the requirements before building.

What Is a Pergola Site Plan?

A pergola site plan is a top-down drawing of your property showing the proposed pergola location and surrounding site details.

It is different from a pergola elevation or structural detail. An elevation shows the side view, height, posts, beams, roof form, materials, and appearance. A site plan shows where the pergola sits on the land.

A pergola site plan usually helps council, a certifier, a designer, or a builder understand:

• Where the proposed pergola will be built
• Whether it is attached or freestanding
• How close it is to property boundaries
• Whether it affects an existing deck, patio, driveway, or outdoor area
• Whether drainage or stormwater is affected
• Whether easements, services, or restricted areas are nearby
• Whether the pergola matches the rest of the application documents

What Council Usually Needs to See

Each council may have its own building consent, planning, or district plan requirements. However, most pergola site plans should show the same core information.

The SIMPLI Guide to Building Consent Application says a site plan is normally used for external or structural work and should show boundary dimensions, north point, finished floor levels, contours or levels, site area, street name and number, lot and DP number, building outline, distances to boundaries, and wind zone. It also notes that affected vehicle areas should show crossings, driveway gradients, manoeuvring, parking, and loading areas where relevant. SIMPLI Guide to Building Consent Application

1. Property Boundaries

The site plan should show the full property outline, including the front, side, and rear boundaries. This helps show where the pergola sits on the section and whether it is close to a neighbouring property.

What to Show

• Full lot outline
• Front, side, and rear boundaries
• Boundary dimensions where available
• Street frontage
• Street name and property address
• Lot and DP number if available

If the pergola is near a boundary, the site plan should show the distance from the proposed pergola to that boundary clearly.

2. Existing House and Structures

A pergola site plan should show what is already on the property. This helps council understand the current site layout before reviewing the new outdoor structure.

What to Show

• Existing house
• Existing garage, shed, carport, or sleepout
• Existing deck, patio, or paved outdoor area
• Existing driveway or accessway
• Existing fences or retaining walls if relevant
• Existing trees or landscaping if relevant
• Existing stormwater pits, drains, or services if known

This is especially important if the pergola is attached to the house, built over an existing deck, or placed near a retaining wall, driveway, or boundary.

3. Proposed Pergola Location

The proposed pergola should be clearly labelled on the site plan. Do not show it as an unlabelled box or vague outline.

What to Show

• Proposed pergola footprint
• Whether it is attached or freestanding
• Location over a deck, patio, garden, or paved area
• Relationship to the existing house
• Location of posts or support points if relevant
• Connection point to the house if attached

Use a clear label such as “Proposed Pergola.” If it is roofed, label the roofed area clearly and confirm whether it should be treated as a veranda, patio cover, porch, canopy, or another structure type.

4. Pergola Size and Dimensions

Council or a reviewer may need to know the size of the pergola, especially if it is roofed, attached to the house, close to a boundary, or part of a consent application.

What to Show

• Pergola length
• Pergola width
• Total covered or framed area
• Post locations if required
• Beam or roof outline if relevant
• Height if requested

For example, the plan might label the structure as “Proposed Pergola 4.0m x 3.0m.” If the pergola has a roof, show the roof footprint clearly because roof area can affect consent and drainage requirements.

5. Setbacks to Boundaries and Structures

Setbacks are the distances from the proposed pergola to property boundaries, existing buildings, easements, or other structures. Missing setbacks are one of the most common reasons plans get delayed.

Setbacks to Show

• Distance from pergola to side boundary
• Distance from pergola to rear boundary
• Distance from pergola to front boundary if relevant
• Distance from pergola to existing house if freestanding
• Distance from pergola to other structures
• Distance from pergola to easements or services if relevant

Setback rules can vary by council, zone, site layout, building height, fire separation, district plan controls, and whether the structure is roofed. Always check the local requirements before submitting or building.

6. Pergola Height

Height may matter for planning rules, neighbour effects, wind exposure, structural design, and whether the pergola changes the appearance or use of the outdoor area.

What to Show

• Maximum pergola height
• Height from finished ground level
• Height where the pergola attaches to the house
• Roof or louvre height if applicable
• Height changes on sloping ground if relevant

If the pergola is open and unroofed, the height may still be useful. If the pergola is roofed, louvred, enclosed, attached to the house, or close to a boundary, height can become more important.

7. Roof, Louvre, or Shade Cover Details

The roof question is critical. A simple unroofed pergola may be exempt from building consent, but a roofed pergola may be treated differently.

What to Show

• Whether the pergola is open or unroofed
• Whether it has a solid roof, louvre roof, shade cover, canopy, or clear roofing
• Roof footprint if covered
• Roof fall direction if relevant
• Gutter and downpipe location if relevant
• Connection to existing roof or wall if attached

If the pergola is roofed, drainage and structural details may be needed. It may also need to be reviewed under veranda, porch, patio cover, or other roofed-structure rules rather than the simple pergola exemption.

8. Posts, Footings, and Support Locations

A pergola site plan should show posts or support locations when they matter to the consent, structure, drainage, deck, paving, or access layout.

What to Show

• Post locations
• Footing locations if required
• Connection points to the house if attached
• Posts near boundaries, drains, services, or paving
• Posts on or through an existing deck if relevant
• Structural support areas if engineering is required

If the pergola is attached to the house or roofed, additional structural details may be needed to show how loads are supported.

9. Drainage and Stormwater

Drainage matters most when the pergola is roofed or changes hard surface areas. A roofed pergola can add roofwater runoff, affect downpipes, or change how water flows across the property.

What to Show

• Drainage fall direction
• Roof drainage direction if covered
• Gutters and downpipes if applicable
• Stormwater pits
• Stormwater connection points
• Drainage easements if relevant
• Surface water flow around patios, decks, or paving

The SIMPLI guide lists plumbing and drainage drawings as a plan type for new or altered drainage, including drainage layout, stormwater indication, inspection bends, junctions, and on-site drainage including council mains and retaining wall field drains. SIMPLI Guide to Building Consent Application

10. Easements and Services

If the property has easements or services, they should be shown on the pergola site plan. Posts, footings, paving, roof supports, and drainage work can conflict with underground or legal service areas.

What to Show

• Drainage easements
• Sewer or stormwater lines if known
• Water, gas, or power services if relevant
• Shared access areas
• Restricted building areas shown on title or council records
• Distance from pergola posts or roofline to easements if relevant

If the pergola is close to an easement, council or a service authority may ask for more information before work can proceed.

11. Driveway, Access, and Outdoor Use Areas

Some pergolas are built over outdoor living spaces, beside driveways, near parking areas, or close to access paths. The site plan should show any access details that affect the project.

What to Show

• Existing driveway
• Vehicle crossing if relevant
• Pedestrian access
• Outdoor living area
• Access around the house
• Shared driveway or right of way if applicable

If the pergola affects vehicle access, parking, paths, or outdoor use areas, show the relationship clearly.

12. North Point, Scale, Labels, and Legend

A pergola site plan should be easy to read. The reviewer should not have to guess what each line, symbol, or shaded area means.

What to Include

• North arrow or north point
• Scale or scale bar
• Street name
• Clear labels for existing and proposed features
• Legend for pergola outline, posts, boundaries, setbacks, drainage, and easements
• Drawing title and date if useful

Good labels can prevent simple delays. Use labels such as “Existing Residence,” “Existing Deck,” “Proposed Pergola,” “Post Location,” “Drainage Fall,” and “Stormwater Pit.”

Other Drawings That May Be Needed

A site plan may not be the only drawing needed for a pergola or roofed outdoor structure. Depending on the design, council or a professional may request additional documents.

Common supporting drawings include:

• Pergola elevation
• Roof plan if covered
• Sections
• Post and footing details
• Connection details to the house
• Drainage or stormwater plan
• Engineering details if required
• Product specifications for louvres, roofing, or proprietary systems

The SIMPLI guide lists different plan types that may be required for building consent applications, including site plans, floor plans, elevations, sections, bracing plans, drainage plans, and other details depending on the project. SIMPLI Guide to Building Consent Application

Common Pergola Site Plan Mistakes

Pergola plans can be delayed when basic information is missing or unclear.

Common mistakes include:

• Pergola location not clearly labelled
• Pergola dimensions missing
• Setbacks to boundaries not shown
• Open pergola and roofed pergola not clearly distinguished
• Posts and support points missing
• Drainage not shown for roofed pergolas
• Easements or services not shown
• Existing deck or patio not shown
• No north point or scale
• Site plan does not match elevations, product drawings, or engineering details

Pergola Site Plan Checklist Before Submitting

Before submitting a pergola site plan, check that it shows:

• Property boundaries
• Boundary dimensions where available
• Street name and frontage
• North point
• Scale or scale bar
• Existing house and structures
• Existing deck, patio, driveway, or outdoor area
• Proposed pergola clearly labelled
• Pergola length and width
• Whether the pergola is open, louvred, or roofed
• Post and support locations if relevant
• Setbacks to boundaries and structures
• Height if relevant or requested
• Drainage and stormwater details if roofed or relevant
• Easements and services if applicable
• Clear labels, legend, and notes

Final Thoughts

A building consent site plan for a pergola in New Zealand should clearly show the proposed pergola location, dimensions, boundaries, setbacks, existing structures, deck or patio area, posts, access, drainage, easements, north point, and scale.

The most important thing is to be clear about whether the pergola is open and unroofed, or whether it includes a roof, louvre system, canopy, or patio-cover element. An unroofed pergola may fall under a simple exemption, while a roofed structure may need a different consent check.

A clear site plan does not guarantee approval, but it makes the proposal easier to understand and can reduce requests for more information.

References

• Building Performance – Pergolas
• Can I Build It – Pergola
• Building Performance – Porches and verandas up to 20 square metres
• Building Performance – Porches and verandas between 20 and 30 square metres: Engineer pathway
• Building Performance – Porches and verandas between 20 and 30 square metres: LBP pathway
• Can I Build It – Veranda
• SIMPLI – Guide to Building Consent Application