Granny Flat Plans NZ
Check out info on granny flat plans in New Zealand
As New Zealand faces an escalating housing crisis, the concept of granny flats has emerged as a compelling solution for many homeowners. These small, self-contained dwellings are not only practical but also provide a versatile living option that can address a variety of housing needs. With rising property prices and an increasing demand for affordable housing, granny flats are gaining popularity as a way to optimise space and create new opportunities for multigenerational living or rental income.
But the interest in granny flats goes beyond mere necessity; it reflects a cultural shift towards sustainable living, where homeowners seek to maximise their properties while maintaining flexibility in their lifestyles. Whether you envision a stylish, compact unit in your backyard or a modest retreat for elderly family members, granny flat plans in NZ are diverse and can cater to a wide array of preferences and needs.
In this article, we will explore the various angles of granny flat plans, including innovative designs that blend seamlessly with your existing home, the latest regulatory changes that simplify the building process, and practical tips for homeowners looking to embark on this exciting project. By understanding the options available, you can make an informed choice that enhances your property and contributes to the evolving landscape of New Zealand’s housing solutions.

Types of Granny Flat Plans
Granny flats in New Zealand come in various designs and configurations, catering to different needs, preferences, and property types. Here’s a look at some popular types of granny flat plans:
- Standalone Granny Flats: These are entirely separate from the main house, offering privacy for both the occupants and the main household. Standalone units often come in one or two-bedroom designs, allowing for comfortable living spaces while still being compact. They can be customised to include amenities like kitchens, bathrooms, and living areas, making them ideal for independent living.
- Attached Granny Flats: These units share a wall with the primary residence, providing a balance of privacy and accessibility. Attached flats are particularly appealing for families who want to keep elderly relatives close by while still allowing for independent living. This design often makes it easier to incorporate shared utilities and access points, reducing the need for separate infrastructures.
- Studio Flats: For those looking for a minimalistic approach, studio granny flats combine living, sleeping, and kitchen areas into a single open space. This design is ideal for solo occupants or couples, providing everything necessary within a compact footprint. Studio flats are often more affordable to build and maintain, making them an attractive option for many homeowners.
- Two-Storey Granny Flats: In areas where land is limited, two-storey granny flats can maximise space by building upwards. These designs often include living areas on the ground floor and bedrooms above, offering an efficient use of space. This style is particularly beneficial for families looking to accommodate multiple generations while maintaining a sense of independence.
- Customisable Plans: Many companies and architects in New Zealand offer bespoke granny flat designs tailored to individual needs. Homeowners can work with designers to create a unique layout that fits their specific requirements, whether that involves incorporating eco-friendly features, specific room configurations, or additional storage solutions.
- Transportable Granny Flats: For those who might want flexibility in their living arrangements, transportable granny flats are an excellent choice. These units can be relocated as needed, allowing homeowners to adapt to changing circumstances. While typically smaller, transportable options can still provide all necessary amenities in a functional layout.
Each type of granny flat plan has its unique advantages and considerations, making it essential for homeowners to assess their needs, budget, and site conditions before choosing the best design for their situation

Compliance and Building Regulations
- Current Status of Granny Flat Regulations in New Zealand
As it stands, building a granny flat in New Zealand requires navigating complex compliance and building regulations under the Building Act 2004 and the Resource Management Act (RMA) 1991. Homeowners typically need to apply for both building and resource consents, which can be a lengthy and costly process. The regulations ensure that all new structures meet safety, health, and environmental standards, but they often create barriers that deter homeowners from pursuing smaller housing options. In many cases, a council’s development contributions are triggered by these consents, adding further financial burdens to the project. Additionally, compliance with local district plans and zoning regulations can complicate the approval process, leading to delays or even denials of proposed builds .
- New Status Under the Proposed 60 Square Metre Policy
With the introduction of the proposed 60 square metre policy, significant changes are expected. The new regulations aim to simplify the approval process for granny flats by allowing these minor residential units (MRUs) to be built without requiring resource consents, provided they adhere to specific standards set by the government. This includes criteria such as size limitations (up to 60 square metres), single-storey design, and adherence to health and safety standards.
If enacted, this policy would likely increase the supply of affordable housing options and make it easier for homeowners to add granny flats on their properties. Homeowners would still need to notify their local councils about the construction but would benefit from a streamlined process that eliminates the need for extensive consents. The intent is to foster greater flexibility in housing solutions while ensuring that safety and quality standards are maintained .
The proposed changes signify a promising shift towards addressing New Zealand’s housing crisis by reducing regulatory barriers, thus encouraging more homeowners to consider building granny flats as viable options for extended family living or rental income .

Costs Involved in Building Granny Flats
The cost of building a granny flat in New Zealand can vary significantly based on several factors, including size, design, location, and materials used. On average, you can expect to pay between NZD 240,000 and NZD 400,000 for a standard granny flat. However, costs can be much lower or higher depending on specific circumstances, such as the complexity of the design, the type of materials chosen, and the site preparation required.
For instance, smaller models or prefabricated options may start around NZD 120,000 to NZD 180,000, making them more affordable alternatives. Additionally, building in rural areas often incurs lower costs compared to urban settings, where demand for services and materials tends to drive prices up. Therefore, it’s essential to conduct thorough research and consult with builders to obtain accurate quotes tailored to your specific project.

Benefits of Building a Granny Flat
Building a granny flat can offer a multitude of benefits for homeowners in New Zealand, making it a compelling option for increasing property value, enhancing living arrangements, and providing additional income opportunities. Here are some key advantages:
- Increased Property Value: Adding a granny flat can significantly boost the overall value of a property. According to various real estate experts, properties with additional dwellings tend to sell for more compared to those without. This can be an attractive investment for homeowners looking to maximise their property’s worth .
- Rental Income: Granny flats can serve as a source of passive income through long-term rentals or short-term stays. With the growing demand for rental properties in urban areas, homeowners can capitalise on this opportunity by renting out the flat to students, professionals, or tourists, providing a steady stream of revenue .
- Multi-Generational Living: For families, a granny flat can facilitate multi-generational living arrangements, providing a private space for elderly parents or young adults while keeping them close. This setup fosters family support systems while offering independence .
- Flexibility and Customisation: Granny flats offer homeowners the flexibility to design the space according to their specific needs. Whether it’s a home office, an art studio, or an additional living space for guests, these units can be customised to suit individual preferences, thus enhancing the usability of the property .
- Affordable Housing Options: With the ongoing housing crisis in New Zealand, granny flats can help alleviate some of the pressure by increasing the supply of affordable housing. They offer a viable solution for those unable to enter the housing market or looking for more affordable living alternatives .
- Sustainability and Eco-Friendliness: Building a smaller home like a granny flat can have environmental benefits. These units often require fewer materials and resources compared to traditional homes, contributing to reduced carbon footprints. Additionally, they can be designed with sustainable practices in mind, such as solar panels and rainwater collection systems .

Tips for Sourcing Plans
When embarking on the journey to build a granny flat, sourcing the right plans is crucial for a successful project. Here are some effective strategies to help you find suitable designs.
- Consult Local Builders: Reach out to builders in your area who specialise in small dwellings or renovations. They often have pre-designed plans tailored to meet local building codes and regulations. Additionally, they can provide insights into what works well in your specific environment.
- Engage with Architects: Local architects can create custom plans that cater to your specific needs and site conditions. They can help you maximise the use of space while ensuring compliance with local zoning laws. An architect’s expertise can also add aesthetic value to your granny flat.
- Attend Home Shows and Expos: These events often feature builders and architects who showcase their work. You can gain inspiration and gather brochures or contact details for further discussions about potential designs.
Some FAQ around Granny Flats
Granny flats, also known as minor residential units (MRUs), are small, self-contained homes typically built on the same property as a primary residence. They can serve various purposes, such as housing elderly family members, providing rental income, or offering space for guests.
The recent policy changes aim to simplify the building process for granny flats. Under the proposed regulations, plans for granny flats up to 60 square metres may be exempt from requiring building and resource consents, subject to specific criteria. This change is likely to come into effect around mid-2025.
Granny flat plans come in various styles and configurations, including studio apartments, one-bedroom designs, and two-bedroom options. Homeowners can choose from pre-designed plans available online or work with local builders and architects to create custom designs.
You can find granny flat plans through several avenues:
Local builders and architects often provide pre-designed plans or can create custom designs.
Online platforms like Granny Flat NZ or Architectural Designs offer a variety of ready-made plans.
Home improvement expos are great for exploring options and connecting with professionals.
The costs of building a granny flat can vary widely based on factors such as size, design complexity, materials used, and location. On average, building costs in New Zealand can range from NZD 1,800 to NZD 8,000 per square metre. It’s essential to factor in additional costs for permits, site preparation, and utilities.
Building a granny flat can offer numerous benefits, including:
Additional living space for family members or guests.
Potential rental income by leasing the unit.
Increased property value, as granny flats can enhance the appeal of a property.
Flexibility in housing options, catering to diverse living arrangements.
Currently, building a granny flat typically requires a building consent. However, if the new regulations are implemented in mid-2025, granny flats that meet specific criteria may be exempt from this requirement, simplifying the process for homeowners.
Yes, it is possible to convert an existing structure, such as a garage or shed, into a granny flat. However, any modifications must comply with local building regulations and may require a building consent.
In conclusion, exploring granny flat plans in New Zealand opens up a wealth of possibilities for homeowners seeking to enhance their living spaces. With the upcoming regulatory changes likely set to take effect by mid-2025, including the proposed 60-square-metre exemption, building a granny flat is becoming more feasible and affordable. Whether you opt for a pre-designed plan or a custom design tailored to your specific needs, it’s crucial to consider factors such as compliance with local building regulations, associated costs, and the overall benefits these additional dwellings can bring.
Granny flats can serve various purposes, from accommodating family members to generating rental income, thus contributing to addressing New Zealand’s housing crisis. Working with local builders and architects not only helps you find the best plans but ensures that your project aligns with current standards and regulations.
By investing in a granny flat, you not only enhance your property value but also create a versatile living solution that caters to your family’s evolving needs. For more information on retirement house designs click here.