# Building permits at 403 Mapleton Ave, Boulder, CO 14 permits on record here. The newest, Feb 4: Lennox Dual Fuel Cold Climate Heat Pump & Furnace System Overview: 2-Stage 80% Efficient Furnace Paired w/. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Feb 4, 2026 | Mechanical (HVAC) | Lennox Dual Fuel Cold Climate Heat Pump & Furnace System Overview: 2-Stage 80% Efficient Furnace Paired w/ Variable Capacity Cold Climate Heat Pump System Components: (1) Lennox Gas Furnace - EL280UH090E36B (1) Lennox Indoor Coil - CK40CT-36B-71 (1) Lennox Elite Series - EL18KSLV-036 Heat Pump 3 Ton | $21,334 | [MEC2026-00183](https://nearbypermits.com/boulder/permit/MEC2026-00183/) | | Jun 14, 2022 | Electrical | New dedicated 60 amp circuit to charging location on the left corner of the garage | $1,399 | [ELE2022-00897](https://nearbypermits.com/boulder/permit/ELE2022-00897/) | | Aug 20, 2013 | Electrical | Electrical service change upgrade to 200 amps. Owner indicates panel/meter to be upgraded in existing location. Any change of location of service may require additional review and resubmittal due to considerations of Histirc District. | $1,200 | [PMT2013-04136-ELE](https://nearbypermits.com/boulder/permit/PMT2013-04136-ELE/) | | Jun 6, 2013 | Plumbing | Interior only remodel of 385 s.f. on main floor including relocation of full bath and remodel of kitchen including alteration of interior walls, associated finishes, electrical, mechanical and plumbing. See HIS2013-00192 for landmark alteration certificate for roof over new bath (modified 7/11/13). | $2,000 | [PMT2013-02572-PLB](https://nearbypermits.com/boulder/permit/PMT2013-02572-PLB/) | | Jun 6, 2013 | Mechanical (HVAC) | Interior only remodel of 385 s.f. on main floor including relocation of full bath and remodel of kitchen including alteration of interior walls, associated finishes, electrical, mechanical and plumbing. See HIS2013-00192 for landmark alteration certificate for roof over new bath (modified 7/11/13). | $1,000 | [PMT2013-02572-MEC](https://nearbypermits.com/boulder/permit/PMT2013-02572-MEC/) | | Jun 6, 2013 | Electrical | Interior only remodel of 385 s.f. on main floor including relocation of full bath and remodel of kitchen including alteration of interior walls, associated finishes, electrical, mechanical and plumbing. See HIS2013-00192 for landmark alteration certificate for roof over new bath (modified 7/11/13). | $2,000 | [PMT2013-02572-ELE](https://nearbypermits.com/boulder/permit/PMT2013-02572-ELE/) | | Jun 6, 2013 | Alteration or repair | Interior only remodel of 385 s.f. on main floor including relocation of full bath and remodel of kitchen including alteration of interior walls, associated finishes, electrical, mechanical and plumbing. See HIS2013-00192 for landmark alteration certificate for roof over new bath (modified 7/11/13). | $40,000 | [PMT2013-02572](https://nearbypermits.com/boulder/permit/PMT2013-02572/) | | Dec 20, 2012 | Fence, wall or deck | Construction of approximately 210 lineal feet of 2.5' high fencing along the Mapleton Street and 4th Street property lines and at alley sight triangle -- fence to increase in height to approximately 80 lineal feet if 6' high fencning at rear alley (after sight triangle requirements are met) and cont | $6,700 | [PMT2012-06064-FEN](https://nearbypermits.com/boulder/permit/PMT2012-06064-FEN/) | | Jul 7, 2009 | Roofing | Tear-off reroof of SFD, 32 squares on a pitch represented as 3/12 to 5/12, and 7/12. Shingles to comply with ASTM D225 or D3462 and D3161 Class F. Overlay not allowed - see section R907.3 (specifically item 4) of 2006 IRC. (See his2009-00131) | $10,000 | [PMT2009-02586-RFG](https://nearbypermits.com/boulder/permit/PMT2009-02586-RFG/) | | Apr 18, 1991 | Alteration or repair | Finish 1/2 interior of two car garage the original general permit number is 78 | $250 | [PMT1991-07880](https://nearbypermits.com/boulder/permit/PMT1991-07880/) | | Mar 29, 1990 | Alteration or repair | 1 Dw un. The original general permit number is p9189. | $8,500 | [PMT1990-P9189](https://nearbypermits.com/boulder/permit/PMT1990-P9189/) | | Mar 29, 1990 | Alteration or repair | 1 Dw un the original general permit number is 9189. | $8,500 | [PMT1990-09189](https://nearbypermits.com/boulder/permit/PMT1990-09189/) | | Mar 8, 1990 | Demolition | Demolition demo to convert to SFD | Not listed | [PMT1990-P8810-DEM](https://nearbypermits.com/boulder/permit/PMT1990-P8810-DEM/) | | Sep 7, 1988 | Roofing | Roofing REROOF | $2,000 | [PMT1988-N0913-RFG](https://nearbypermits.com/boulder/permit/PMT1988-N0913-RFG/) | ## More on this street Other addresses on Mapleton Ave with permits, nearest house number first: - [417 Mapleton Ave B](https://nearbypermits.com/boulder/address/417-mapleton-ave-b/): newest permit Oct 15, 2024 - [433 Mapleton Ave](https://nearbypermits.com/boulder/address/433-mapleton-ave/): newest permit Jan 26, 2026 - [312 Mapleton Ave](https://nearbypermits.com/boulder/address/312-mapleton-ave/): newest permit Jan 9, 2026 - [311 Mapleton Ave](https://nearbypermits.com/boulder/address/311-mapleton-ave/): newest permit Sep 17, 2026 - [501 Mapleton Ave](https://nearbypermits.com/boulder/address/501-mapleton-ave/): newest permit Nov 18, 2024 - [520 Mapleton Ave](https://nearbypermits.com/boulder/address/520-mapleton-ave/): newest permit Jan 14, 2025 - [553 Mapleton Ave](https://nearbypermits.com/boulder/address/553-mapleton-ave/): newest permit Jan 29, 2025 - [625 Mapleton Ave](https://nearbypermits.com/boulder/address/625-mapleton-ave/): newest permit Feb 18, 2026 - [642 Mapleton Ave](https://nearbypermits.com/boulder/address/642-mapleton-ave/): newest permit May 19, 2026 - [704 Mapleton Ave](https://nearbypermits.com/boulder/address/704-mapleton-ave/): newest permit Jan 7, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 19:11 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 14 permits at this address: https://nearbypermits.com/boulder/address/403-mapleton-ave/