Cross-Lease Site Plan Requirements NZ: Complete Guide

A site plan for a cross-lease property in New Zealand must show more than the outside boundary of the overall section. It should clearly identify the buildings, legal title information, leased areas, exclusive-use areas, common property, shared accessways, easements, services and the proposed work.

Cross-lease properties require extra care because several owners share the underlying land while each owner holds a long-term lease over the building or flat they occupy. A project may comply with the Building Code and council planning rules but still breach the cross-lease documents or require consent from the other cross-lease owners.

What Is a Cross-Lease Property?

A cross lease is a form of property ownership commonly found where two or more houses, units or flats occupy one underlying parcel of land.

Each owner normally holds two connected interests:

• An undivided share in the underlying freehold land with the other cross-lease owners
• A leasehold interest in the particular dwelling or flat that the owner occupies

The leases are often granted for 999 years at a nominal rental.

The record of title usually refers to a deposited cross-lease or flats plan showing the footprint of each leased building. It may also show areas reserved for one owner’s exclusive use and areas intended for common use.

Older cross leases may contain incomplete, basic or difficult-to-read plans. The physical property may also have changed since the plan was deposited.^[1][2]

Cross Lease Is Not the Same as Unit Title

The correct ownership type should be confirmed from the record of title rather than assumed from the appearance of the development.

Why Cross-Lease Site Plans Need Extra Detail

On an ordinary fee-simple property, the main legal reference is usually the outside property boundary.

A cross-lease property can involve several additional layers:

• The outside boundary of the underlying freehold parcel
• The footprint of each leased flat or dwelling
• Exclusive-use areas
• Common-use areas
• Shared driveways and pedestrian access
• Rights of way
• Shared drains and utility routes
• Fences or walls separating practical use areas
• Restrictions contained in each registered lease

A simple drawing showing only “House 1” and “House 2” may not be enough to explain how the proposed work affects those rights.

The Four Documents to Check First

A LIM can also be useful, but the council property file may contain plans and supporting material that are not reproduced in the LIM.

What Is a Flats Plan?

The flats plan is the registered plan associated with the cross lease. It normally identifies the building or flat that each owner is entitled to occupy.

Depending on its age and format, it may show:

• Flat 1, Flat 2 or other building identifiers
• The footprint of each principal dwelling
• Garages or accessory buildings
• Exclusive-use areas
• Common areas
• Shared driveways
• Lease or licence boundaries

The flats plan is not necessarily a complete modern survey or architectural site plan. Older plans can be highly simplified.

However, the physical building footprint should be compared carefully with the registered plan. Additions extending outside the footprint shown on the flats plan can create a defective cross-lease title.^[1][3]

What Is a Defective Cross Lease?

A cross lease may be described as defective when the registered lease or flats plan no longer matches the physical property or occupation arrangements.

Common causes include:

• A house extension not added to the flats plan
• A garage or carport converted into habitable space
• A new garage, deck, conservatory or enclosed verandah
• A building demolished but still shown on the plan
• A replacement building with a different footprint
• An exclusive-use area changed without updating the documents
• A shared driveway or common area altered

Defects are often discovered when the property is sold, refinanced or reviewed by a lawyer or surveyor.

A defective title can:

• Delay a sale
• Concern purchasers and lenders
• Require retrospective consent from the other owners
• Require surveying and legal work
• Reduce buyer confidence
• Create disputes about ownership or occupation

Do Other Cross-Lease Owners Need to Consent?

Often, yes—but the answer depends on the exact wording of the registered lease and the proposed work.

Consent may be required for:

• Extensions or additions
• External alterations
• Changing the building footprint
• Building a deck
• Constructing a garage, carport, shed or sleepout
• Changing fences or walls
• Changing a shared driveway
• Building within a common area
• Changing the use of an exclusive-use area
• Interfering with shared drains or utilities
• Changing the external appearance of the dwelling

Some leases require unanimous written consent. Others use different approval wording or limit the grounds on which consent may be refused.

The lease must be reviewed by a property lawyer before relying on a general rule.

Government consumer guidance warns that cross-lease owners can require permission from the other cross-lease holders before exterior renovations, decks, fences and similar work.^[2][4]

Does Council Check Cross-Lease Consent?

Not necessarily.

The council’s building-consent role is principally to determine whether:

• The applicant qualifies as an owner under the Building Act
• The proposed work will comply with the Building Code
• The required application information has been provided
• Planning or other statutory matters have been addressed

Council approval does not generally resolve private contractual rights between cross-lease owners.

A council may therefore grant building consent while another owner still has the right to object under the lease. Beginning construction without the required private consent can expose the owner to a civil dispute, injunction or claim for remediation.^[5][6]

Building Consent, Resource Consent and Cross-Lease Consent

A project can require all four processes.

What Should a Cross-Lease Site Plan Show?

1. Overall Legal Property Boundary

Show the complete outside boundary of the underlying parcel of land.

Include:

• The front boundary
• The rear boundary
• Both side boundaries
• The length of each boundary
• The adjoining road
• Any irregular or angled boundaries
• The total site area where available

The overall legal boundary belongs to the shared underlying title. It should not be confused with an exclusive-use garden, fence line or leased-building footprint.

2. Flats-Plan Building Footprints

The site plan should reproduce or reference the building footprints shown on the registered flats plan.

Show:

• Flat 1, Flat 2 or other registered identifiers
• The footprint shown on the deposited plan
• The current measured footprint
• Any difference between the two
• Garages or accessory structures shown on the plan
• Structures that exist physically but are absent from the plan

Where differences exist, use clear labels such as:

• Registered Flats-Plan Footprint
• Existing As-Built Extension
• Proposed Addition
• Structure Not Shown on Registered Plan

Do not quietly redraw the flats-plan outline to match the current building. The difference may be legally important.

3. Existing and Proposed Buildings

Show every relevant building on the shared site, not merely the applicant’s dwelling.

These can include:

• All principal dwellings
• Garages
• Carports
• Sheds
• Sleepouts
• Minor dwellings
• Decks
• Covered patios
• Conservatories
• Retaining walls

Clearly distinguish:

• Existing registered structures
• Existing structures not shown on the flats plan
• Proposed structures
• Structures to be removed

4. Exclusive-Use Areas

An exclusive-use area is land that one cross-lease owner is entitled to use privately under the lease arrangement.

Examples can include:

• A private garden
• A courtyard
• A parking space
• An outdoor living area
• A path serving one dwelling

The plan should:

• Show the registered exclusive-use area
• Label the owner or flat to which it relates
• Distinguish it from common land
• Show proposed work within or near it
• Identify any practical fence that differs from the registered arrangement

Exclusive use does not necessarily mean separate legal ownership. The lease wording controls the rights and restrictions applying to the area.

5. Common Areas

Common areas are parts of the property available for shared use.

They may include:

• A common driveway
• Turning area
• Pedestrian path
• Shared garden
• Visitor parking
• Waste-storage area
• Service corridor

Show the full common area and explain how the proposed project affects it.

Relevant impacts can include:

• Temporary construction access
• Scaffolding
• Material storage
• Permanent narrowing of the driveway
• New gates
• Changes to parking
• Drainage work
• Utility trenching

6. Shared Driveway and Vehicle Access

Shared access is one of the most common sources of cross-lease disagreement.

The site plan should show:

• The road boundary
• Vehicle crossing
• Full driveway width
• Any right-of-way boundary
• Parking areas
• Turning and manoeuvring areas
• Garage access
• Gate locations
• Pedestrian routes
• Proposed construction access

A project should not:

• Block another owner’s access
• Reduce the usable driveway width without approval
• Occupy common parking
• Place posts or walls within a right of way
• Redirect water onto the shared driveway
• Prevent emergency or maintenance access

7. Rights of Way and Easements

Show all registered rights and easements affecting the site.

These may include:

• Vehicle rights of way
• Pedestrian access rights
• Stormwater easements
• Wastewater easements
• Water-supply easements
• Electricity or telecommunications easements
• Drainage rights over neighbouring land

Label:

• The easement type
• The registered width
• The land benefited and burdened where known
• The service or access route
• The proposed work’s distance from it

A building consent does not cancel or override an easement.

8. Shared Water and Drainage Services

Cross-lease properties commonly contain services that cross exclusive-use or common areas.

The site plan may need to show:

• Water meters
• Shared water-supply lines
• Private wastewater drains
• Shared wastewater connections
• Stormwater pipes
• Catchpits and manholes
• Rainwater tanks
• Soak pits
• Inspection points
• Public connection points

Before placing a foundation, deck pile, retaining wall or new building, confirm whether underground services cross the proposed work area.

Where a drain serves multiple owners, the lease, easements and practical maintenance arrangements should be checked.

9. Electricity, Gas and Telecommunications

Show major service routes where they affect the project.

Relevant features can include:

• Power poles
• Overhead electricity lines
• Underground power routes
• Meter boxes
• Transformers
• Gas meters or cylinders
• Telecommunications cabinets
• Shared utility trenches

Construction should preserve access for meter reading, maintenance and emergency isolation.

10. Boundary and Building Setbacks

A cross-lease plan can contain several lines that resemble boundaries. The drawing should explain which line is being used for each measurement.

Possible reference lines include:

• The outside legal property boundary
• A leased-building boundary
• An exclusive-use boundary
• A common-area boundary
• A planning yard line
• A practical fence line

Show the shortest distances from the proposed work to:

• The outside legal boundaries
• Other buildings
• Relevant lease or occupation areas
• Shared access
• Registered easements

11. Fire Separation and Relevant Boundaries

Cross-lease boundaries can be relevant to Building Code fire-spread assessment.

The drawings may need to identify:

• The nearest relevant boundary
• The distance from external walls to that boundary
• The distance between buildings
• Wall and roof construction
• Fire-rated walls
• Unprotected openings
• Eaves and roof projections

Do not assume that only the outside freehold boundary matters. The Building Code definition of a relevant boundary can include a boundary of a cross lease, company lease or licence.^[7]

12. Fences, Walls and Gates

Show all fences, gates and retaining walls where they define practical use or affect the proposed work.

Identify:

• Fence alignment
• Fence height
• Gate location and width
• Retaining-wall position
• Whether the feature lies in a common or exclusive-use area
• Whether it matches the registered lease arrangement

A fence can show how the owners currently occupy the site, but it does not automatically establish a registered exclusive-use boundary.

13. Building and Site Coverage

Planning calculations are usually based on the entire planning site rather than the applicant’s informal garden area.

The calculation may need to include:

• Every dwelling on the cross-lease site
• Garages and carports
• Proposed additions
• Accessory structures
• Covered decks and patios where counted
• Other roofed structures included by the planning definition

Do not calculate coverage using only one owner’s exclusive-use area unless the applicable planning rules specifically permit that method.

14. Impervious Areas and Stormwater

Impervious-area calculations may also apply across the wider site.

Show relevant surfaces such as:

• Roofs
• Driveways
• Parking areas
• Concrete paths
• Paved patios
• Other hard surfaces

A project affecting one dwelling can increase runoff entering a shared private drain or common driveway. The drainage assessment should consider the whole connected system.

15. Contours, Levels and Natural Hazards

Site levels may be needed where the property contains:

• Sloping ground
• Retaining walls
• Flooding
• Overland flow paths
• Driveway gradients
• Low-lying common areas
• Shared stormwater systems

Show:

• Contours or spot levels
• Finished floor levels
• Driveway high and low points
• Surface-flow arrows
• Flood or overland-flow areas
• Retaining-wall levels

A project should not redirect water from one exclusive-use area into another or obstruct a shared overland flow route.

16. Trees and Landscaping

Show significant vegetation where it affects:

• Exclusive-use or common areas
• Construction access
• Foundation excavation
• Shared amenity
• Protected-tree rules
• Drainage and root systems
• Screening between dwellings

Removal of trees from common land may require agreement from the other owners even when council approval is not needed.

Projects That Commonly Need a Cross-Lease Site Plan

House extension

Show the registered dwelling footprint, proposed addition, setbacks, shared access, services and the resulting as-built footprint.

Deck or verandah

Show the complete deck outline, height, stairs, boundary distances, relationship to common areas and whether it changes the footprint represented on the flats plan.

Garage or carport

Show vehicle access, turning, shared driveway width, parking, drainage, boundaries and the relationship to every dwelling.

Sleepout or shed

Show the exclusive-use area, legal boundaries, building separation, access, services and any consent required under the lease.

Fence or retaining wall

Show the registered use areas, practical occupation, wall or fence alignment, heights, drainage and effects on access.

Driveway alteration

Show the complete shared driveway, legal rights, gradients, drainage, parking, turning and temporary construction impacts.

Granny flat or additional dwelling

Show the entire cross-lease site, all dwellings, access, parking, services, coverage, legal rights and the proposed occupation arrangement. Significant legal restructuring may be required.

Does Consent-Exempt Work Still Need Cross-Lease Approval?

Yes, potentially.

Building-consent exemption does not remove:

• Building Code obligations
• District-plan requirements
• Resource-consent requirements
• Cross-lease consent requirements
• Easement restrictions
• Land covenants
• Neighbouring-owner rights

MBIE’s sleepout guidance specifically advises owners of cross-lease properties to obtain legal advice and states that the other owners’ consent will be needed for a sleepout on a cross-lease site.^[8]

Updating the Flats Plan After an Addition

Where an addition changes the registered building footprint, updating the cross-lease title can require:

1. Completion of the physical building work and council approvals
2. A cadastral survey of the altered development
3. Preparation of a new or amended cross-lease cadastral survey dataset
4. Consent and signatures from affected owners
5. Preparation of lease-variation documents
6. Consent from mortgagees or other registered parties where required
7. Lodgement through Landonline
8. Registration by Land Information New Zealand

The exact process depends on the title, leases, physical changes and advice from the surveyor and lawyer.

LINZ warns that alterations completed without co-owner consent or without updating the cross-lease plan can cause the house to extend beyond the leased area and create a serious issue when the property is sold or otherwise dealt with.^[1]

Who Is Usually Involved?

Common Cross-Lease Site Plan Mistakes

Showing only the applicant’s garden

The underlying property is shared. Show the full site and the relationship to every affected dwelling and common area.

Treating an exclusive-use line as a legal property boundary

An exclusive-use area is different from the outside freehold boundary and may be governed by the lease rather than separate ownership.

Ignoring the registered flats plan

The current building should be compared with the deposited plan before new work is designed.

Assuming council consent equals neighbour consent

Council approval does not generally resolve private cross-lease restrictions.

Obtaining verbal agreement only

Use properly documented written consent reviewed by a lawyer where the lease requires approval.

Leaving the shared driveway off the plan

Construction and permanent development can affect access, parking, manoeuvring and drainage.

Using fences as lease boundaries

Fences may reflect an informal arrangement rather than the registered title documents.

Showing only one dwelling in coverage calculations

Planning calculations may apply to the entire site and all counted buildings.

Ignoring shared drains

A proposed foundation or extension can obstruct infrastructure serving another owner.

Failing to distinguish common and exclusive-use areas

Use clear colours, hatching or line styles and include a legend.

Changing the building footprint without considering the title

An approved addition can still leave the registered flats plan defective.

Submitting plans that do not match

The site plan, floor plans, elevations, owner-consent documents and survey information should describe the same project.

Cross-Lease Site Plan Checklist

• Full street address
• Lot and deposited-plan number
• Relevant freehold and leasehold title references
• North point and drawing scale
• Complete outside legal boundary
• Boundary dimensions
• Every existing dwelling
• Garages, carports, sheds and other structures
• Registered flats-plan footprints
• Current measured building footprints
• Proposed construction
• Exclusive-use areas
• Common-use areas
• Shared driveway and parking
• Pedestrian access
• Rights of way and easements
• Boundary and building setbacks
• Water, wastewater and stormwater services
• Electricity and telecommunications
• Fences, gates and retaining walls
• Coverage and impervious-area calculations where required
• Contours, drainage and natural hazards where relevant
• Existing and proposed labels
• Clear legend explaining every boundary type

Information to Gather Before Ordering

• Property address
• Record of title
• Registered cross-lease documents
• Deposited flats plan
• Existing cadastral survey, if available
• Council property-file plans
• LIM, if available
• Dimensions of every existing building
• Proposed floor plans and elevations
• Proposed project dimensions
• Driveway and parking information
• Known exclusive-use and common-area information
• Known easements and rights of way
• Water, wastewater and stormwater information
• Existing fences, gates and retaining walls
• Photographs of the entire site
• Written correspondence with the other owners
• Any council or lawyer comments

Order a Cross-Lease Site Plan in New Zealand

NZ Site Plan can prepare a clear, easy-to-read property drawing showing the overall legal boundary, existing dwellings, registered building footprints, proposed work, exclusive-use areas, common areas, shared access, setbacks, easements, services and other important property features.

The plan can be prepared using title documents, the deposited flats plan, an existing survey, council information, project measurements, architectural plans and photographs supplied by the owner or designer.

The site-plan service does not replace legal advice or cadastral surveying. Where the project changes a registered building footprint or requires variation of the cross lease, a property lawyer and licensed cadastral surveyor will normally need to complete the title-related work.

Frequently Asked Questions

What is a cross-lease property?

It is a property where the owners share the underlying freehold land and each owner leases the particular dwelling or flat that they occupy.

What is a flats plan?

It is the registered plan associated with the cross lease. It commonly shows the footprint of each leased building and may show exclusive-use or common areas.

Does the site plan need to show the whole property?

Yes. Showing the complete cross-lease site helps explain the legal boundaries, all buildings, shared access, common areas, services and effects on the other owners.

Do I need the other owners’ consent to renovate?

Possibly. Many cross leases require consent for additions, external alterations, decks, fences, garages and changes to common areas. A lawyer should review the specific lease.

Will council obtain the other owners’ consent?

Do not rely on council to resolve private lease rights. Building consent and cross-lease consent are separate matters.

Can council grant building consent without cross-lease consent?

Potentially, yes. Granting building consent does not necessarily mean the work is permitted under the private lease.

What happens if an addition is not shown on the flats plan?

The cross-lease title may become defective because the physical building footprint no longer matches the registered plan.

Does a deck change the flats plan?

It can, depending on the existing plan, deck design and lease wording. Obtain advice from a surveyor and lawyer before assuming that no update is needed.

Is an exclusive-use area separately owned?

Usually not. It is generally part of the shared underlying land over which one owner has exclusive occupation rights under the lease.

Can I build in my exclusive-use garden?

Exclusive use alone does not automatically provide permission to build. The lease, planning rules, Building Code, easements and co-owner consent requirements must be checked.

Do exempt sheds or sleepouts require owner consent?

They may. Exemption from building consent does not remove obligations under the cross lease.

Who updates the flats plan?

A licensed cadastral surveyor normally prepares the survey work, while a property lawyer handles the lease variation and registration documents. The affected owners and mortgagees may also need to consent.

Do I need a licensed surveyor?

A surveyor may be needed to locate boundaries accurately or update the registered cross-lease plan. A general site plan does not alter the title.

Can NZ Site Plan update the legal cross lease?

NZ Site Plan prepares the property site-plan drawing. Registered cadastral surveys, lease variations and title registration must be completed by the appropriate surveyor and lawyer.