# Building permits at 400 E Diehl Rd, Naperville, IL 11 permits on record here. The newest, Jul 10: Interior remodel of an existing Suite 200 we are adding 4 new offices into the existing suite. Naperville publishes permits without map coordinates, so this address has no map and no quarter-mile list. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Jul 10, 2026 | Fire systems | Interior remodel of an existing Suite 200 we are adding 4 new offices into the existing suite. You dont have a "Suite 200" at this point so we applied under "Suite 220". | $15,000 | [FIRE-0196-2026](https://nearbypermits.com/naperville/permit/FIRE-0196-2026/) | | Jul 9, 2026 | Fire systems | Interior Office- minor renovation. Adding 5 new offices in an existing tenant space. | $30,000 | [FIRE-0242-2026](https://nearbypermits.com/naperville/permit/FIRE-0242-2026/) | | Jul 9, 2026 | Fire systems | Interior Office- minor renovation. Adding 5 new offices in an existing tenant space. | $30,000 | [FIRE-0197-2026](https://nearbypermits.com/naperville/permit/FIRE-0197-2026/) | | Jun 30, 2026 | Alteration or repair | Interior remodel of an existing Suite 200 we are adding 4 new offices into the existing suite. You dont have a "Suite 200" at this point so we applied under "Suite 220". | $15,000 | [COMM-0164-2026](https://nearbypermits.com/naperville/permit/COMM-0164-2026/) | | Jun 30, 2026 | Alteration or repair | Interior Office- minor renovation. Adding 5 new offices in an existing tenant space. | $30,000 | [COMM-0150-2026](https://nearbypermits.com/naperville/permit/COMM-0150-2026/) | | Jun 26, 2026 | Fire systems | Interior remodel of an existing Suite 200 we are adding 4 new offices into the existing suite. You dont have a "Suite 200" at this point so we applied under "Suite 220". | $15,000 | [FIRE-0243-2026](https://nearbypermits.com/naperville/permit/FIRE-0243-2026/) | | Oct 8, 2025 | Fire systems | Addition of fire alarm notification devices to accomodate tenat remodel | $2,751 | [FIRE-0503-2025](https://nearbypermits.com/naperville/permit/FIRE-0503-2025/) | | Oct 3, 2025 | Fire systems | Interior remodel of office space expanding into the adjacent space. | $127,000 | [FIRE-0402-2025](https://nearbypermits.com/naperville/permit/FIRE-0402-2025/) | | Jul 3, 2025 | Alteration or repair | Interior remodel of office space expanding into the adjacent space. | $127,000 | [COMM-0346-2025](https://nearbypermits.com/naperville/permit/COMM-0346-2025/) | | Dec 1, 2023 | Elevator | | Not listed | [ELEV-0555-2023](https://nearbypermits.com/naperville/permit/ELEV-0555-2023/) | | Dec 1, 2023 | Elevator | | Not listed | [ELEV-0554-2023](https://nearbypermits.com/naperville/permit/ELEV-0554-2023/) | ## More on this street Other addresses on E Diehl Rd with permits, nearest house number first: - [535 E Diehl Rd](https://nearbypermits.com/naperville/address/535-e-diehl-rd/): newest permit Dec 15, 2025 - [850 E Diehl Rd](https://nearbypermits.com/naperville/address/850-e-diehl-rd/): newest permit Feb 21, 2025 - [940 E Diehl Rd](https://nearbypermits.com/naperville/address/940-e-diehl-rd/): newest permit Jul 3, 2026 - [1087 E Diehl Rd](https://nearbypermits.com/naperville/address/1087-e-diehl-rd/): newest permit Aug 26, 2026 - [1155 E Diehl Rd](https://nearbypermits.com/naperville/address/1155-e-diehl-rd/): newest permit Aug 6, 2025 - [1164 E Diehl Rd](https://nearbypermits.com/naperville/address/1164-e-diehl-rd/): newest permit Sep 14, 2026 - [1200 E Diehl Rd](https://nearbypermits.com/naperville/address/1200-e-diehl-rd/): newest permit Mar 27, 2026 - [1208 E Diehl Rd](https://nearbypermits.com/naperville/address/1208-e-diehl-rd/): newest permit Jul 16, 2026 - [1240 E Diehl Rd](https://nearbypermits.com/naperville/address/1240-e-diehl-rd/): newest permit Sep 3, 2026 - [1245 E Diehl Rd](https://nearbypermits.com/naperville/address/1245-e-diehl-rd/): newest permit Nov 20, 2025 --- Source: City of Naperville permit data (https://www.arcgis.com/home/item.html?id=d13ad71731234cfa8793b75705c3dbe2). Checked 2026-10-08 11:35 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 11 permits at this address: https://nearbypermits.com/naperville/address/400-e-diehl-rd/