As you shop around for a new safe, your mind probably goes to security features first. However, one of the most overlooked features of a home safe is its size. Go too small, and you’re limited to what it can hold. Too big, and you might not have enough space to store or install it.
The key is finding the balance among capacity, available room, and your personal security requirements. As you weigh up your options for home safes, this guide can help you determine the right size to protect your valuables now and in the future.
What Do You Plan to Store in Your Safe?
Before you can choose a safe, consider what you plan on storing inside. Some common household items include:
- Important documents (passports, birth certificates, and property titles)
- Jewellery and heirlooms
- Cash and other valuables
- Electronics and hard drives
- Firearms or controlled items
- Digital media and backups
Since different items require different configurations, you’ll need to choose accordingly. For example, firearm safes must meet specific requirements, while safes for cash or deposit safes might use drop mechanisms. Depth also matters, as document safes might require less space compared to bulkier items such as firearm components or camera equipment.
How to Estimate Safe Storage Volume and Growth
It’s common for homeowners to underestimate how much space they actually need. For the best indication of how much internal volume you need, it helps to lay out all the items you intend to store and group them.
As a general rule, you should allow an additional 25–50% capacity beyond your current needs. Consider new valuables you might acquire over time, changes to your household circumstances, and seasonal or temporary storage needs.
Modern house safes often include adjustable shelving or removable interiors, so there’s flexibility as your storage requirements change. Having this adaptability can extend the lifespan of a safe without requiring an upgrade, making it a smarter investment.
Safe Size vs Available Space in Your Home
Equally as important as its internal capacity is the external dimensions of a safe. Your home safe should suit its environment, meaning you have to weigh up practicality and security.
Common installation locations include:
- Bedrooms (in wardrobes or built-in cupboards)
- Home offices
- Garages or workshops
- Under staircases
- In concealed wall/floor spaces
Additionally, wall depth, floor strength, and surrounding clearance can all influence the size of a safe, and where you install it. When we install safes in Perth for our customers, we require a specific door-swing clearance to ensure ease of use without compromising security.
Weight and Structural Considerations of a Safe
A safe’s size directly affects its weight, which is another factor in installation and security. Generally, larger safes are significantly heavier and place higher demands on your home’s structure, but they also offer greater resistance to theft. Although WA experienced a decrease in burglaries in 2025, it’s the peace of mind many homeowners want.
Heavier safes also require specialised safe installation services to ensure they’re positioned and anchored correctly, preventing movement. During installation, we’ll also consider floor load capacity, ease of transport, and any handling requirements.
With additional specifications, it’s important to consider what you might store in it. For example, safes for cash will require something different from a safe for jewellery or heavier items, so shop only for the size you need.
Internal Configuration and Usability
The internal layout of a safe can also impact its practicality, with higher-quality safes designed to increase usable space without increasing their external footprint. To make the most of your safe’s configuration, look for features such as:
- Adjustable shelving for more flexible storage
- Drawers to hold jewellery and other small valuables
- Document holders to organise files
- Compartments for cash or digital media
Practicality is key. So, a safe that’s easy to identify and retrieve items from reduces the risk of disorganisation and improves accessibility and usability for its owner.
Safe Placement: Accessibility vs Concealment
Although your home safe should be easy for you to access, you also want to conceal it from others. Choosing a safe that’s too big to hide might provide better organisation. However, smaller safes are easier to conceal in cupboards or behind furniture, offering a more discreet security solution.
The best choice depends on what you’re storing and how often you use it. For homeowners who access their safe regularly, convenience will be the deciding factor. If you’re storing long-term, a more discreet placement could work.
Why Professional Advice Matters When You’re Choosing a Safe Size
Choosing a safe is a big deal. As you entrust your safe with protecting your most prized possessions, you need to consider more than just its dimensions. Thankfully, it’s easier with experienced guidance.
Askwith Safe Company can assess factors in your home, such as functionality, installation, and security, to recommend suitable options tailored to you. For those considering a house safe or safety deposit box in Perth, we also factor in Western Australia’s unique environmental and climate.
With a wide range of options, including home safes, jewellery safes, deposit safes, and quality used safes, we have solutions for every household. Our team also provides professional safe installation and safe removals, ensuring each safe is installed securely and correctly.
Gain Expert Help from Askwith Safe Company
Selecting the correct safe size is essential to protecting valuables now and in the future. At Askwith Safe Company, homeowners are supported in choosing the right safe for their space, storage needs, and security requirements, from compact document safes to large, fire-rated home safes.
Our experienced team offers expert advice, a wide range of high-quality safes, and professional delivery and installation services across Perth and Australia.
Contact Askwith Safe Company today at www.askwithcompany.com.au or call (08) 9451 7848 to find the perfect safe for your home.