With the recent rise in homeowner interest in granny flats now is a great time to consider adding one to your property. Granny flats offer a versatile solution for extending family living space, generating rental income, downsizing, or providing affordable housing.

But how much planning really goes into building a granny flat? Here’s our quick and easy guide to get you started.

Types of Granny Flats

Granny flats come in various forms, including:

1. Attached Granny Flats: These are extensions or additions to the main house, sharing a wall with the primary residence. They often have separate entrances.
2. Detached Granny Flats: Standalone units located on the same property as the main house but not physically connected. These provide more privacy and independence.
3. Garage Conversions: Existing garages that are converted into living spaces. This option can be cost-effective since the basic structure is already in place.
4. Basement Granny Flats: Converting an existing basement into a livable granny flat. This option is often utilized in urban areas where space is limited.
5. Loft Granny Flats: Utilizing the space above a garage or within a large home, loft granny flats are typically smaller but can be very efficient.
6. Custom-built Granny Flats: Tailor-made units designed specifically to meet the needs and preferences of the homeowner and the future occupant.
7. Modular Granny Flats: Prefabricated units that can be built off-site and transported to the property for assembly. These are typically quicker and sometimes more cost-effective to install.

Planning Your Granny Flat

When planning to build a granny flat in New Zealand, it’s essential to understand and comply with local regulations, even with the expected policy changes.

Consents

The government plans to allow property owners to build granny flats up to 60 square metres without needing building or resource consent, provided they meet certain criteria. However, all building work must still comply with the New Zealand Building Code, and new dwellings will need appropriate flood-proofing mechanisms and meet Healthy Homes standards if intended as rental properties.

Zoning Laws

Zoning laws in New Zealand vary by region and are outlined in district plans managed by local councils. These laws determine what you can build on your property, and specifics can differ greatly between residential, rural, and special zones. Always check your local district plan or consult with the council to confirm what is permissible. Alternatively, you can ask us to manage the entire project for you. We’ll take care of all the finer details.

Boundaries

Boundary regulations dictate the permissible proximity of a secondary dwelling to property boundaries and existing structures. The following setbacks are commonly enforced:

1. Front yard: A minimum distance of 1 to 3 meters from the front boundary is typically mandated.
2. Side and rear yard: A minimum distance of 1 to 3 meters from the side and rear boundaries is generally required.
3. Height restrictions: Certain local authorities implement height-to-boundary regulations to mitigate overshadowing of adjacent properties.

These regulations are designed to maintain appropriate spatial relationships between structures and ensure compliance with local planning ordinances.

Trade Professionals

To build a granny flat, you might need various trade professionals such as architects, designers, draughtspersons, and certified builders. These professionals ensure that your granny flat is functional, aesthetically pleasing, and complies with local building codes.

When it comes to designing your granny flat, the size and layout are critical factors that you simply can’t afford to overlook. By carefully considering these elements, you’ll create a space that’s not just functional, but truly comfortable and complies with all necessary regulations.

Let me emphasize how important it is to consult with professionals who know the ins and outs of local requirements. An experienced architect, designer, or draughtsperson can be your secret weapon in achieving the best possible results. Their expertise will help you maximize every square inch of space while ensuring your granny flat meets all legal standards.

But that’s not all that needs to be considered – the execution of your design is equally vital. By partnering with a certified builder like Retro Construction, you’re guaranteeing a high-quality finish that will stand the test of time. With over 30+ years of skills and knowledge we will create a granny flat that’s not just liveable, but truly exceptional, and meets all local building laws.

Also, don’t underestimate the impact of getting the size and layout right. It’s the foundation of a successful granny flat project that will serve you or your loved ones for years to come. Make the smart choice – invest in professional guidance and skilled craftsmanship to create your dream granny flat.

Budgeting

Costs for building a granny flat can vary widely. For the die-hard DIY project manager, consider factors such as hiring an architect or designer, obtaining necessary consents, construction costs, and connection fees for utilities. Remember to also account for any post-construction finishing touches, such as landscaping.

Choosing to work with a professional construction firm like Retro Construction offers numerous advantages, an can ensure a smoother, more efficient, and ultimately more satisfying building experience. Here are some key benefits we can offer you:

1. Expertise and Experience: Retro Construction brings years of industry experience to the table. Our team of skilled professionals, including architects, designers, and builders, ensures that every aspect of your granny flat project is handled with precision and expertise. This level of experience significantly reduces the likelihood of errors and costly mistakes.
2. Time Efficiency: Managing a construction project can be time-consuming, especially for those without a background in project management. Retro Construction takes care of all the details, from initial planning to final completion, allowing you to focus on other important aspects of your life. Our streamlined processes and efficient workflow means your granny flat will be completed in an efficient, timely manner.
3. Quality Assurance: When you choose Retro Construction, you are guaranteed a high standard of workmanship. We use top-quality materials and adhere to stringent building codes and regulations, ensuring your granny flat is safe, durable, and built to last.
4. Customized Solutions: Every client has unique needs and preferences. Retro Construction excels at providing customized solutions tailored to your specific requirements. Whether you want a modern design, a traditional look, or something entirely unique, our team will work closely with you to bring your vision to life.
5. Stress Reduction: Undertaking a construction project on your own can be stressful and overwhelming. Retro Construction handles all the complexities, from obtaining necessary consents and permits to coordinating and managing the construction site. This reduces the stress and hassle for you, making the entire process more enjoyable.
6. Cost Management: While it might seem cost-effective to manage the project yourself, unexpected expenses can quickly add up. Retro Construction provides accurate cost estimates and keeps the project within budget. Our established relationships with suppliers and subcontractors often result in better pricing on materials and services, saving you money in the long run.
7. Post-Construction Support: The relationship with Retro Construction doesn’t end when the building is complete. We offer post-construction support, ensuring that any issues are promptly addressed and resolved. Our commitment to customer satisfaction extends beyond the project’s completion, providing peace of mind and ongoing support.

Closing

Granny flats offer flexibility, potential rental income, and increased property value but they can require a significant initial investment. Despite this they are a smart investment, offering solutions for family living, rental income, and affordable housing. With our help and experience and understanding of local regulations, we can successfully plan and build a granny flat that meets your exact needs and is within your budget. 

Contact us today and let’s turn your dream into reality