The "Didn't Know" Decluttering Rule — Let Go of What No Longer Serves You With This Easy Method
Experts explain how you can implement this rule into your life to build a clutter-free home

Decluttering can be quite an overwhelming task. With the range of methods available at your disposal, it's important to note and understand what works for you and your needs. So while exploring the world of all things clutter-free, we stumbled upon the "didn't know" decluttering rule.
This rule aims to streamline the process for you, help center your focus on the task at hand, and help you understand how to declutter your home. So, what is this method? Put simply, if you find something you didn’t know you had during a declutter session, it's probably time to let go of it. It's a surefire way to declutter your space and multiply your efforts without trying too hard.
If you're overwhelmed and don't know where to start, why not use this method? With a bit of guidance from our professional organizers, here's how you can effectively implement this method and ease your decluttering journey.
What is the "Didn't Know" rule?
How many times have you found something you'd completely forgotten you had during a clearout or declutter? It happens to all of us, and it signifies one of the most common problems of our modern world — overconsumption. If you have possessions collecting dust that you don't even know about, it's a pretty good indicator that you don't need them and might want to set up a decluttering checklist to ease things for you.
That's where the "Didn't Know" decluttering principle comes into action. "The belief is that if an item has been out of sight and mind for so long that you forgot you owned it, it's unlikely to be of significant value or use in your life," says Di Ter Avest, owner of Di is Organized and author of the book Organize Yourself Healthy, available at Amazon. As you make your way through your stuff, it becomes an easy decision-making process to help you part with things you don't need and avoid decision fatigue.
Amanda Wiss, Founder of NYC-based home organizing company Urban Clarity, says this rule is, "a way to approach clutter that has gathered in the farthest reaches of your home". Unless there's an obvious reason why that item should stay and has been forgotten — such as having sentimental value or being a family heirloom — it's time to let them go.
Storage Solutions for Your Home
Price: $32.99
Was: $50.99
Quantity: 2
Available in a pack of two, this rectangular basket is ideal for holding all your essentials. Stylish and functional, this product has three compartments, providing storage for your toiletries, clothing and even beauty products.
Di Ter Avest is a professional home and lifestyle organizer and the owner of Di is Organized, in Baltimore, MD (USA). Her accountability program and book Organize Yourself Healthy help women across the globe to get their lives and homes organized, leading to lower levels of stress and overwhelm. Her expertise has been featured on Forbes, Today, ApartmentTherapy, Real Homes, Livingetc, Home & Gardens, and Kitchn; she has also given workshops at IKEA, West Elm, and Williams-Sonoma.
How Effective is This Method?
Setting out to find stuff you'd forgotten about is — by nature — a difficult task, especially when it comes to knowing how to declutter when you are overwhelmed. You could start with areas of the home you haven't paid much attention to, like the loft or garage, but we think this rule is most effective when used in tandem with a regular decluttering project. As you go through your stuff, anything you didn't know you had become an immediate item for the throw or donate pile.
If you're an indecisive person, this approach also makes it quicker to let things go without long deliberation, as well as easier to declutter without regretting it. "The "Didn't Know" rule could be a practical and effective decluttering strategy because it provides a neutral way to assess the items without the emotional inclinations that often accompany decluttering decisions," explains Di. "If you forgot about it, it might not be serving a meaningful purpose in your life."
That being said, Amanda recommends giving yourself some grace in this process. "It is entirely possible that rediscovering something can bring it to the forefront again," she explains. "A long-forgotten item can become a go-to. I think you have to allow yourself to hold on to some of these things, but it takes a lot of honesty with yourself to know the difference between holding on for a good reason, and holding on for the sake of holding on."
How can you adapt the "Didn't Know" Rule?
Decluttering techniques don't have to be hard and fast rules. Depending on your circumstances, personality, and your decluttering target, you can adapt ideas like the "Didn't Know" rule to make them more or less challenging.
If you don't want to declutter your home ruthlessly or be too cutthroat, Di suggests creating a designated a space in your home for items you randomly discover that you didn't know you had. "After a certain period (e.g., a month), if you haven't used or needed any of these items, it's a sign they may be ready to be let go," she says.
There are also cases where you might want to make exceptions. This might include the sentimental items we mentioned earlier or stuff that you don't use as often (because, let's face it, no one's memory is that good). "It's important to remember that not every forgotten item is necessarily useless. Some items might be seasonal or stored away for specific reasons," Di notes. "Use the rule as a guide rather than an absolute rule, and balance it with your personal needs, lifestyle, and sentimental values."
And lastly, remember to be kind to yourself. Decluttering can bring on waves of nostalgia as you find things you'd forgotten yet remind you of times long gone. "Sometimes you’ll come across forgotten items and not be ready to let go of them yet," says Amanda. "That’s okay, too."
The "Didn't Know" rule is a great tool to add to your decluttering and organization repertoire, but you certainly can't rely on it to fix all your troubles. Use it as part of a wider, more holistic approach to decluttering and you're sure to have greater control of the stuff inside your home.
Our Top 3 Reads
Be The First To Know
The Livingetc newsletter is your shortcut to the now and the next in home design. Subscribe today to receive a stunning free 200-page book of the best homes from around the world.
Lilith Hudson is the Trends Editor at Livingetc. She holds an MA in Magazine Journalism from City, University of London, and has previously written for the Saturday Times Magazine, Evening Standard, DJ Mag, Metro, and The Simple Things Magazine. Writing for our digital platform, she's the go-to person for all the latest micro-trends, interior hacks, and viral decor must-haves you need in your home. With a constant ear to the ground on social media, Lilith stays ahead of the curve when it comes to the fresh color sweeping interiors or the hot new style entering the homes of celebs.
- Faiza SaqibAdvice & Gardens Editor
-
How to Polish Marble Countertops — 4 Expert Steps and Common Mistakes You Should Avoid
Make your countertops look as radiant as ever without the fear of causing damage by following this expert-informed guide
By Ciéra Cree Published
-
This Brutalist Mexican Home Could Have Felt Harsh — Instead, It's a Relaxing Coastal Retreat
Raul Velazquez, founder of RVO Studio, takes us on a tour of this architectural escape set right on the seafront
By Daisy Finch Published
-
How to Polish Marble Countertops — 4 Simple Steps for a Sparkling Space and the Common Mistakes You Should Avoid
Make your countertops look as radiant as ever without the fear of causing damage by following this expert-informed guide
By Ciéra Cree Published
-
Chilly Garage? Here’s the Best Way to Heat It Like an HVAC Pro (No Frostbite Allowed!)
Heating matters and these professionals explain how you can warm up this space in your home during the winter freeze
By Faiza Saqib Published
-
When to Prune Wisteria — Expert Advice to Guarantee Beautiful Blooms Come Spring
Trim this vigorous plant when it's dormant for a spectacular show in the upcoming seasons
By Jacky Parker Published
-
The First Night Box — 5 Essentials You Should Pack and Why You'll Need Them in Your New Home
Instead of rummaging through boxes, save your time (and sanity) with these smart, professional tips
By Cheyenne Brown Published
-
How to Make Homemade Laundry Detergent — It's Natural, Quick and Easy, Says Our Cleaning Expert
Professional advice on how you can make your own clothing, duvet and linen wash
By Seraphina Kyprios Published
-
I'm a Neat-Freak Who Hates Chores — But These 6 Bathroom Cleaning Hacks Helped Me Get Mine Streak-Free, Without Breaking a Sweat
The shaving cream trick to keep mirrors from fogging was the winner
By Ciéra Cree Published
-
How to Wash a Weighted Blanket — 4 Methods You Need for a Soft and Cozy Throwover
Keep your blanket in pristine condition with this easy-to-follow washing guide
By Seraphina Kyprios Published
-
I Tried the Week-By-Week Decluttering Challenge — And Here's What I Learnt About My Home
Transform your space by taking on this easy-to-follow challenge
By Ciéra Cree Published