CITY OF PORTSMOUTH, NEW HAMPSHIRE ZONING ORDINANCE Adopted by Portsmouth City Council: December 21, 2009 Effective Date: January 1, 2010 As Amended Through: January 11, 2021 CHAPTER 10 ZONING ORDINANCE Table of Articles ARTICLE 1 PURPOSE AND APPLICABILITY 1-1 ARTICLE 2 ADMINISTRATION AND ENFORCEMENT 2-1 ARTICLE 3 NONCONFORMING LOTS, BUILDINGS, STRUCTURES AND USES 3-1 ARTICLE 4 ZONING DISTRICTS AND USE REGULATIONS 4-1 ARTICLE 5 DIMENSIONAL AND INTENSITY STANDARDS 5-1 ARTICLE 5A CHARACTER-BASED ZONING 5A-1 ARTICLE 5B GATEWAY NEIGHBORHOOD MIXED USE DISTRICTS 5B-1 ARTICLE 6 OVERLAY DISTRICTS 6-1 ARTICLE 7 FLEXIBLE DEVELOPMENT 7-1 ARTICLE 8 SUPPLEMENTAL USE STANDARDS 8-1 ARTICLE 9 SPECIAL USES 9-1 ARTICLE 10 ENVIRONMENTAL PROTECTION STANDARDS 10-1 ARTICLE 11 SITE DEVELOPMENT STANDARDS 11-1 ARTICLE 12 SIGNS 12-1 ARTICLE 13 PERFORMANCE STANDARDS 13-1 ARTICLE 14 IMPACT FEES 14-1 ARTICLE 15 DEFINITIONS 15-1 As Amended Through January 11, 2021 i CHAPTER 10 ZONING ORDINANCE Table of Articles and Sections ARTICLE 1 PURPOSE AND APPLICABILITY 1.1 SECTION 10.110 TITLE ..................................................................................................................... 1.1 SECTION 10.120 PURPOSE ............................................................................................................... 1.1 SECTION 10.130 APPLICABILITY ........................................................................................................ 1.2 SECTION 10.140 RELATIONSHIP TO OTHER REQUIREMENTS ............................................................... 1.2 SECTION 10.150 CHANGES AND AMENDMENTS .................................................................................. 1.2 SECTION 10.160 SEPARABILITY ........................................................................................................ 1.2 ARTICLE 2 ADMINISTRATION AND ENFORCEMENT 2.1 SECTION 10.210 GENERAL ............................................................................................................... 2.1 SECTION 10.220 BUILDING PERMIT ................................................................................................... 2.1 SECTION 10.230 ZONING BOARD OF ADJUSTMENT ............................................................................ 2.2 SECTION 10.240 CONDITIONAL USE PERMITS .................................................................................... 2.6 SECTION 10.250 PENALTY ................................................................................................................ 2.10 ARTICLE 3 NONCONFORMING LOTS, BUILDINGS, STRUCTURES AND USES 3.1 SECTION 10.310 NONCONFORMING LOTS .......................................................................................... 3.1 SECTION 10.320 NONCONFORMING BUILDINGS AND STRUCTURES ...................................................... 3.1 SECTION 10.330 NONCONFORMING USES ......................................................................................... 3.2 ARTICLE 4 ZONING DISTRICTS AND USE REGULATIONS 4.1 SECTION 10.410 ESTABLISHMENT AND PURPOSE OF DISTRICTS ......................................................... 4.1 SECTION 10.420 DISTRICT LOCATION AND BOUNDARIES .................................................................... 4.3 SECTION 10.430 USE REGULATIONS ................................................................................................. 4.4 SECTION 10.440 TABLE OF USES – RESIDENTIAL, MIXED RESIDENTIAL, BUSINESS AND INDUSTRIAL DISTRICTS .............................................................................................................. 4.7 SECTION 10.450 TABLE OF USES – PEASE/AIRPORT DISTRICTS ......................................................... 4.27 SECTION 10.460 TABLE OF USES – MUNICIPAL AND CONSERVATION DISTRICTS .................................. 4.34 SECTION 10.470 USES PERMITTED IN THE TRANSPORTATION CORRIDOR DISTRICT ............................. 4.34 ARTICLE 5 DIMENSIONAL AND INTENSITY STANDARDS 5.1 SECTION 10.510 GENERAL REQUIREMENTS ...................................................................................... 5.1 As Amended Through January 11, 2021 iii SECTION 10.520 RESIDENTIAL AND MIXED RESIDENTIAL DISTRICTS .................................................... 5.6 SECTION 10.530 BUSINESS AND INDUSTRIAL DISTRICTS ..................................................................... 5.8 SECTION 10.540 AIRPORT DISTRICTS ................................................................................................ 5.9 SECTION 10.550 CONSERVATION DISTRICTS ..................................................................................... 5.10 SECTION 10.560 MUNICIPAL DISTRICT .............................................................................................. 5.10 SECTION 10.570 ACCESSORY BUILDINGS, STRUCTURES AND USES .................................................... 5.11 SECTION 10.580 SPECIAL DIMENSIONAL REQUIREMENTS FOR CERTAIN USES ..................................... 5.11 SECTION 10.590 MINIMUM DISTANCE BETWEEN NONRESIDENTIAL USES AND RESIDENTIAL AND MIXED RESIDENTIAL DISTRICTS ............................................................................... 5.12 ARTICLE 5A CHARACTER-BASED ZONING 5A.1 SECTION 10.5A10 GENERAL ............................................................................................................... 5A.1 SECTION 10.5A20 REGULATING PLAN ................................................................................................. 5A.3 SECTION 10.5A30 CHARACTER DISTRICT USE STANDARDS .................................................................. 5A.4 SECTION 10.5A40 CHARACTER DISTRICT DEVELOPMENT STANDARDS .................................................. 5A.4 SECTION 10.5A50 CIVIC DISTRICTS ................................................................................................... 5A.42 SECTION 10.5A60 DEFINITIONS ......................................................................................................... 5A.43 ARTICLE 5B GATEWAY NEIGHBORHOOD MIXED USE DISTRICTS 5B.1 SECTION 10.5B10 GENERAL ............................................................................................................... 5B.1 SECTION 10.5B20 GENERAL STANDARDS FOR ALL BUILDINGS AND DEVELOPMENT................................ 5B.2 SECTION 10.5B30 BUILDING TYPES AND STANDARDS ........................................................................... 5B.6 SECTION 10.5B40 DEVELOPMENT SITE STANDARDS .......................................................................... 5B.13 SECTION 10.5B50 PRE-EXISTING BUILDINGS AND LOTS ..................................................................... 5B.19 SECTION 10.5B60 BUILDING FAÇADE TYPES ...................................................................................... 5B.22 SECTION 10.5B70 DENSITY THRESHOLDS AND BONUSES ................................................................... 5B.23 SECTION 10.5B80 PARKING AND LOADING REQUIREMENTS AND STANDARDS ...................................... 5B.26 SECTION 10.5B90 PEDESTRIAN ACCESS AND CIRCULATION ............................................................... 5B.27 SECTION 10.5B100 COMMUNITY SPACE ............................................................................................. 5B.28 ARTICLE 6 OVERLAY DISTRICTS 6.1 SECTION 10.610 OVERLAY DISTRICTS GENERALLY ............................................................................ 6.1 SECTION 10.620 FLOODPLAIN DISTRICT ............................................................................................ 6.2 SECTION 10.630 HISTORIC DISTRICT................................................................................................. 6.12 SECTION 10.640 DOWNTOWN OVERLAY DISTRICT ............................................................................. 6.24 SECTION 10.650 OSPREY LANDING OVERLAY DISTRICT ..................................................................... 6.24 SECTION 10.660 AIRPORT APPROACH OVERLAY DISTRICT ................................................................. 6.25 SECTION 10.670 HIGHWAY NOISE OVERLAY DISTRICT ....................................................................... 6.28 As Amended Through January 11, 2021 iv ARTICLE 7 FLEXIBLE DEVELOPMENT 7.1 SECTION 10.710 GENERAL ............................................................................................................... 7.1 SECTION 10.720 PLANNED UNIT DEVELOPMENTS .............................................................................. 7.2 ARTICLE 8 SUPPLEMENTAL USE STANDARDS 8.1 SECTION 10.810 RESIDENTIAL AND INSTITUTIONAL RESIDENCE OR CARE USES .................................. 8.1 SECTION 10.820 EDUCATIONAL, RELIGIOUS, CHARITABLE, CULTURAL, PUBLIC AND RECREATIONAL USES ..................................................................................................................... 8.10 SECTION 10.830 BUSINESS USES ..................................................................................................... 8.11 SECTION 10.840 MOTOR VEHICLES AND MOTOR VEHICLE USES ........................................................ 8.13 SECTION 10.850 INDUSTRIAL USES ................................................................................................... 8.14 SECTION 10.860 HOURS OF OPERATION ........................................................................................... 8.16 ARTICLE 9 SPECIAL USES 9.1 SECTION 10.910 SMALL WIND ENERGY SYSTEMS .............................................................................