Hide Delivery Packages on Porch (Locking Box)
A porch parcel box can keep deliveries out of sight and protected when it is weather-resistant, lockable, sized for your parcels, and placed outside required door landings and travel routes. Survey the door swing and nearby equipment first, anchor through sound structural material, provide drainage, then test the box with its lid fully open before relying on it.
Rain, snow, and busy holiday delivery periods can make a porch box seem especially useful. But a box that keeps parcels dry should not create a new problem by blocking a door, narrowing a route, or restricting access to a meter or vent. I plan the location first, then choose the box and anchoring method to suit it.
The key detail is the box’s operating envelope: the space it occupies while closed and while its lid or door is open. A box may fit neatly against a wall when shut and still obstruct a landing when opened. This guide covers how to survey, site, anchor, and check a locking parcel box.
Porch survey, applicable codes, and siting
A porch survey is a check of the door, landing, stairs, route, and nearby equipment before you choose a box location. It helps reveal conflicts that a quick measurement can miss. Local code editions and amendments vary, so confirm requirements with your building department, also called the authority having jurisdiction, or AHJ.
Start by measuring the porch and noting the egress door, the door’s swing, stairs, handrails, and the path people use to reach the door. Mark vents, meters, shutoffs, and equipment service panels too. Do not cover or restrict them; preserve the clearances required by the equipment maker and local rules.
The International Residential Code, or IRC, generally calls for a landing on each side of an egress door. Under IRC §R311.3, the landing is generally at least as wide as the door and at least 36 inches deep in the direction of travel. Exceptions may apply, so check the edition adopted in your area and ask the AHJ if the porch layout is unusual.
There is no general IRC or International Building Code minimum size for a parcel box. As a starting design target, consider about 18 by 18 by 24 inches of clear interior space. That is not a code minimum, and it may not fit your largest expected delivery. Measure parcels you commonly receive and check the delivery service’s instructions before buying.
Next step: Sketch the porch, mark the landing and route, and measure the parcels the box needs to hold.
Door swing, landing, and accessible-route clearances
Clearance is the usable space people need to approach and pass through a door. Check it with the box shut and with its lid or door fully open. The open position matters: a lid can sweep across the landing or route even when the closed box sits outside them.
Keep the box off stairs and out of any required landing or clear route. The IRC landing dimensions above are a general rule, not a substitute for checking your locally adopted code. Also consider the door’s swing and how people carry bags, use handrails, or move a mobility device through the space.
Where accessibility requirements apply, the 2010 ADA Standards §403.5.1 generally require an accessible route at least 36 inches wide, subject to listed exceptions. Section 404.2.3 generally requires a 32-inch minimum clear door opening. Applicability depends on the property and project; do not assume these standards apply to every private home. When they do apply, keep both the box and its open lid outside the required clear width.
A practical way to test the operating envelope is to mark the box footprint with tape, then open the lid or door through its full travel. Measure the remaining clear space and compare it with the rules that apply to your site. If the lid blocks a route or landing, choose a different location or a design with a different opening direction.
| Check | What to measure or observe | What to do if it conflicts |
|---|---|---|
| Egress landing | Door width and landing depth | Relocate the box; confirm local code and exceptions |
| Accessible route, when required | Clear width with box shut and open | Keep the full operating envelope outside the route |
| Door swing | Full travel from closed to open | Change the box location or opening direction |
| Stairs and handrails | Clear access and safe passage | Do not place the box on stairs or in the required path |
Next step: Test the lid or door at full opening before committing to a location.
Structural anchorage, weatherproofing, and lock installation
Anchorage is the connection that holds the box in place. Its strength depends on the box, the loads, and the material beneath it. There is no universal anchor size or rating for every porch. Select anchors for the actual substrate, follow the manufacturer’s published allowable values, and do not rely on siding or trim as structural support.
First identify what lies behind or below the proposed mounting point. Concrete, masonry, and verified framing may each call for a different anchor type and installation method. Check the anchor maker’s requirements for embedment, edge distance, and spacing. If you cannot confirm the substrate or a safe fixing method, ask a qualified installer rather than fastening through an unknown wall assembly.
Choose an exterior-rated enclosure and corrosion-resistant lock suited to the exposure at your porch. Look for a sloped or drained bottom so water does not collect inside. Seal mounting penetrations as appropriate for the wall or floor material, while avoiding a seal that traps water inside the box.
A NEMA rating describes electrical enclosures; it does not automatically certify a parcel box. Do not treat a NEMA label as proof that a package receptacle is weatherproof. Review the parcel-box maker’s own information about rain exposure, materials, drainage, and care.
Install and test the lock from the side the intended user will operate it. Check that the delivery method is clear to the carrier and that you can retrieve a parcel without blocking the door or route. A locking box can deter casual access, but no box should be treated as a guarantee against theft or weather damage.
Next step: Match the anchors to the verified substrate, and confirm the box’s drainage and lock operation.
Final clearance, operation, and delivery-fit verification
Final verification means checking that the installed box works as intended without obstructing access. Re-measure the relevant landing or route, test the door and lock, inspect water shedding, and confirm nearby equipment remains reachable. Repeat the clearance check with the box open, not just closed.
Use this sequence after choosing the location:
- Place the box and mark its footprint and full lid or door travel.
- Confirm that required landings and routes remain clear in both positions.
- Fasten through structural material using substrate-appropriate anchors.
- Seal penetrations as needed and check that water can drain from the enclosure.
- Test the lock, lid, and parcel opening from the intended user side.
- Check that vents, meters, shutoffs, and service panels remain unobstructed.
- Measure the clearances again and compare them with local requirements.
If the box feels unstable, the anchors do not match the substrate, or the lid crosses a required route, stop and revise the installation. Do not try to solve a clearance conflict by limiting the lid’s opening if that would prevent normal use or safe access.
Next step: Keep a note of the final measurements and the lock or delivery instructions for household members and carriers.
Example porch layouts and box choices
These examples are planning scenarios, not records of specific installations. They show how the same checks can lead to different choices. Actual code requirements and equipment clearances depend on the site, the adopted rules, and the relevant manufacturers’ instructions.
| Porch situation | Main concern | Practical approach |
|---|---|---|
| Narrow porch with an outward-swinging door | Open lid may cross the landing or door path | Test the full swing; consider a different location or opening direction |
| Broad porch with a wall-mounted meter nearby | Box may hinder meter access | Keep the meter’s service area clear and follow its required access rules |
| Porch with concrete slab | Anchor type and slab edges matter | Choose anchors rated for the actual concrete and follow edge-distance guidance |
| Porch with siding over unknown framing | Siding is not structural anchorage | Verify framing and fasten into suitable structure, not just trim or siding |
| House with an accessible route requirement | Box may reduce clear width | Measure the route with the lid open and apply the standards that govern the project |
Consider a narrow entry where a box fits beside the door when shut, but its top lid swings into the landing. The closed footprint alone would suggest the location works. Testing the operating envelope reveals the conflict, so the installer must relocate the box or choose a design whose opening does not obstruct the required space.
Now consider a porch with ample floor area but a nearby service panel. The box may fit without affecting the door, yet still block service access. The right location is not simply the spot with the most open floor; it must preserve access to equipment as well.
Next step: Choose a box and location together, based on the full opening path and service needs.
Conclusion and frequently asked questions
A good porch parcel box keeps deliveries contained while leaving doors, routes, and equipment accessible. Start with a site survey, check local requirements, and test the full lid or door movement. Then select weather-ready materials and anchors suited to the actual structure. Recheck the clearances after installation.
How large should a porch parcel box be?
There is no general code minimum. About 18 by 18 by 24 inches of clear interior space is a design starting point, not a rule. Size the box to your typical parcels and delivery method.
Can I put a parcel box on a required landing?
Do not place it where it reduces a required landing or blocks egress. Check the locally adopted code and confirm the required clear space with your AHJ.
Does the box need to stay clear of the door when its lid is open?
Yes. Check the full opening path. A lid or door that obstructs a landing or required route can create a problem even if the closed box fits.
Can I anchor a box to siding or porch trim?
Do not rely on siding or trim as structural anchorage. Verify the material behind or beneath the mounting point and use anchors designed for that substrate.
What anchors should I use for concrete?
Choose anchors for the actual concrete and the expected loads. Follow the anchor maker’s published values and instructions for embedment, edge distance, and spacing.
Does a NEMA rating prove that a parcel box is weatherproof?
No. NEMA ratings apply to electrical enclosures and do not automatically certify a parcel box. Check the box maker’s weather and drainage information.
Can I place the box near a meter or vent?
Only if it does not block access or restrict airflow. Preserve manufacturer-required clearances and ask the utility or AHJ when requirements are uncertain.
Do ADA route and door-width rules apply to every home?
Not necessarily. The 2010 ADA Standards include route and door-opening requirements where applicable. Confirm which accessibility rules govern your property and project.
What if there is no safe place for the box on the porch?
Do not squeeze it into a landing, stair, or required route. Consider another permitted location or a different box design, and verify local rules before installing it.
(This article was written by one of our staff writers, David Sinclair. Visit our Meet the Team page.)
