Article IV Overlay Districts

Source: zoning-ordinance-2026-03-11.pdf, pages 74-101.

Section 400 Establishment of Overlay Districts.

The following overlay districts are hereby established:

  • Wetlands Conservation District
  • Floodplain District
  • Steep Slope District
  • Airport Protection District
  • Historic District
  • Landfill Reclamation District
  • Riverbank Protection District

In the areas of the City which are included in an overlay district, the regulations of the overlay district shall apply in addition to the regulations of the applicable use district. Where regulations in a use district and an overlay district conflict, the regulation of the most restrictive district shall apply.

Section 401 Wetlands Conservation District.

401.1 Purposes.

The purposes of the Wetlands Conservation District are to:

401.2 Description of Wetlands Conservation District.

The Wetlands Conservation District includes the following:

401.3 Boundary Disputes.

In a dispute about the boundary of the Wetlands Conservation District, the edge of a wetland, as defined by RSA 482-A and as required by RSA 674:55, shall be determined by a certified wetland scientist using field methods prescribed by the Army Corps of Engineers Wetland Delineation Manual (January 1987) and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Northcentral and Northeast Region (January 2012, as amended). Where applicable, the edge of the buffer shall be computed as a horizontal distance from the edge of the wetland, as determined above. If the land is sloped, the measurement along the sloped ground is not applicable (see diagram). The City may retain an independent certified wetland scientist to map the area in question and require the applicant to pay the cost thereof.

Diagram referenced in Section 401.3.
Diagram referenced in Section 401.3.

401.4 Permitted Uses.

The following table identifies the uses that are permissible within the Wetland Conservation District, provided such uses do not involve a structure (except as expressly referenced) and do not alter the surface configuration of the land by the addition of fill, by excavation or dredging, by the construction of dams, or by any other process which would alter the ground or surface water level of any portion of the wetlands, including but not limited to channeling, draining or other means:

Table 401.4 Permitted Uses
Wetland Wetland (High & Very High Value) Wetland buffer (100' to Very High & High Value wetland)
A, B, C, D, E, F, G, I C, E, F, G A*, B, C, D, E, F, G, H, I

401.5 Special Exceptions.

Except for projects proposed within the High and Very High Value wetlands portion of the Wetland Conservation District, projects that qualify for a Permit by Notification, Minimum Impact Expedited Permit or any other type of Minimum Impact Permit from the State of NH Dept. of Environmental Services Wetlands Bureau shall be exempt from the requirement to obtain a special exception. However, a notification form informing of said projects shall be supplied to the Zoning Administrator.

Upon application to the Zoning Board of Adjustment, excepting the Wetland Conservation District identified as Very High or High Value wetland, a special exception may be requested to permit the erection of a structure; the construction of streets, roads, and other access ways; for pipelines, powerlines, and other transmission lines; and the construction of fences, footbridges, catwalks and docks within the Wetlands Conservation District, provided that all of the following conditions are found to exist, in lieu of the findings required by Section 801.3:

Table 401.5 Special Exception
Wetland Wetland (High & Very High Value) Wetland buffer 100' to Very High & High Value wetland)
Structure SE Prohibited SE
Streets/Roads/Access Ways SE Prohibited SE
Pipelines/Powerlines/Transmission lines SE Prohibited SE
Fences, Footbridges, SE Prohibited SE (see Section 401.6)
Catwalk & Docks SE Prohibited N/A

401.6 Special Provisions.

401.7 Applications to Zoning Board of Adjustment.

Section 402 Floodplain District.

402.1 Description of Floodplain District.

The Floodplain District includes all special flood hazard areas designated by the Federal Emergency Management Agency (FEMA) in its “Flood Insurance Study for the County of Grafton, NH” dated February 20, 2008, together with the associated Flood Insurance Rate Maps dated February 20, 2008. Said maps are on file with the City Clerk, Planning Board and City Engineer.

402.2 Floodplain District Regulations.

Within the Floodplain District, all requirements of the Flood Damage Prevention Ordinance of June 4, 1980, City Code Chapter 74, as amended, shall be complied with.

402.3 Floodplain Official.

The Floodplain Official is responsible for administering and enforcing Section 402.2. The City Engineer will normally serve as the Floodplain Official. See City Code Chapter 74-15.

Section 403 Steep Slopes District.

403.1 Purpose.

The purpose of the Steep Slope District is to prevent development on slopes in excess of 25 percent. Development on such slopes causes soil erosion and stream sedimentation; unnecessary loss of vegetative ground cover and destruction of trees; on-site waste disposal problems; difficult street construction; and expensive street maintenance.

403.2 Description of Steep Slopes District.

The Steep Slope District includes all areas having slopes in excess of 25 percent that are located within the RL-3 District. The slope of the natural terrain shall be determinative of whether or not land is within the district. As a general guide, areas of slope in excess of 25 percent are delineated on the Steep Slopes Map prepared as part of the Lebanon Master Plan.

403.3 Permitted Uses.

No buildings, structures or parking lots shall be permitted in the Steep Slopes District. Otherwise, the following uses are permitted:

403.4 Special Exceptions.

Section 404 Ridgeline District. (reserved)

Reserved.

Section 405 Scenic Corridors District. (reserved)

Reserved.

Section 406 Aquifer Protection District. (reserved)

Reserved.

Section 407 Airport Protection District.

Notwithstanding any other provision of this Ordinance, in order to provide for the safety of aircraft landing and taking off from Lebanon Municipal Airport, the following regulations shall apply:

407.1 Imaginary Surfaces for Objects Affecting Navigable Airspace.

407.2 References.

The above surfaces are indicated upon the current Airport Master Plan maintained by the Airport Manager and on file in his or her office. The surfaces are taken from Part 77 Federal Aviation Regulations and are based upon the ultimate development of the Airport with runways and primary surfaces as follow:

407.3 Use of Land Near Airport.

No use may be made of land within the horizontal surfaces of the Airport described in Section 407.1.A. in such manner as to create electrical interference with radio aids or communications between the Airport and aircraft; make it difficult for flyers to distinguish between Airport lights and other lights; result in glare in the eyes of flyers using the Airport; impair visibility in the vicinity of the Airport by the creation and discharge of smoke, steam, dust or other obstructions to visibility or otherwise endangering the landing, taking off or maneuvering of aircraft.

407.4 Requirements for Indication of Hazards.

Any variance granted to allow a greater height than permitted in Section 407.1 may require the owner of the property, at his or her own expense, to install, operate, and maintain thereon such markers and lights as may be required by the FAA to indicate to flyers the presence of an Airport hazard.

Section 408 Historic District.

408.1 Authority.

This section is enacted pursuant to RSA 674:46. The City of Lebanon Heritage Commission shall have the authority granted to it by RSA 674:44-a through d, et. seq., and this Ordinance.

408.2 Purposes.

The purpose of this Ordinance is to preserve the historic and cultural resources of the City of Lebanon and, particularly, the City’s structures and places of historic, architectural and community value in order to:

408.3 Delineation of Historic Districts.

The areas and boundaries of the Historic Districts are shown on the Historic District Map of the City of Lebanon and made a part of this Ordinance and the Official Zoning Map of the City of Lebanon. The Historic District Map is attached hereto as Appendix C.

408.4 Certificate of Approval Required.

A Certificate of Approval shall be obtained from the Heritage Commission in the manner set forth herein prior to the commencement of any of the following activities within any Historic District:

No building permit (when applicable) shall be issued prior to the receipt of a Certificate of Approval for the above-described activities.

408.5 Activities Not Requiring Certificates of Approval.

The following activities are exempt from review by the Heritage Commission, and no Certificate of Approval shall be required:

408.6 Criteria For Review.

In determining whether or not to grant a Certificate of Approval, the Heritage Commission shall keep in mind the purpose set forth in Section 408.2 herein and shall consider, among other appropriate factors, the following:

When the Heritage Commission determines that it is necessary or advisable in order to preserve or protect historically and/or architecturally significant buildings, the Commission may require preservation and/or accurate reproduction of exterior architectural features. Preservation and/or reproduction measures shall be completed pursuant to the “Secretary of the Interior’s Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings.”

The new work shall be differentiated from the old and shall be compatible with the massing, size, scale, and architectural features to protect the historic integrity of the property and its environment.

Applications for Certificates of Approval may be denied if such denial is required to prevent construction or development which would conflict with the stated purposes of Section 408.2 herein.

408.7 Application Procedures.

The following procedures and any rules of procedure duly adopted by the Heritage Commission shall be followed in processing applications for Certificates of Approval:

408.8 Submittal Requirements.

All applications for a Certificate of Approval shall contain a written description of the work or activity for which approval is requested, together with plan and elevation drawings to scale and, where appropriate, photographs which, together, shall be sufficient to reasonably inform the Heritage Commission as to the type or nature of the activity applied for, the location of the activity, and the effect or impact on the exterior of the building(s) involved.

408.9 Removal or Demolition of Buildings.

No building shall be demolished or moved off its lot within any Historic District until, following a receipt of a Certificate of Approval, at least one publication of notice of such demolition or removal has been published by the owner in a newspaper of general circulation in the area in which the building and lot are located, such notice to be published not less than 30 days prior to the date of such demolition or removal.

The purpose of this provision is to further the purposes of Section 408.2 and to afford a person or organization the opportunity to acquire, or to arrange for the preservation of, such building.

Notwithstanding the above, upon application to the City Building Inspector, any building substantially damaged as a result of fire or other disaster or constituting a public safety hazard shall be exempt from the provisions of this section.

408.10 Appeal.

Any person aggrieved by a decision of the Heritage Commission shall have the right to appeal said decision to the Zoning Board of Adjustment as provided by RSA 677:17. Such appeals shall be filed with the Zoning Board of Adjustment within 20 days of the filing of the Certificate of Approval or Notice of Disapproval with the Building Inspector.

408.11 Enforcement.

The provisions of this Section 408 shall be enforced as provided by State law and pursuant to Section 903 of this Ordinance.

Section 409 Landfill Reclamation District.

409.1 Purpose.

The purpose of the Landfill Reclamation District is to encourage the reclamation and alternative secondary uses of municipally-owned land that has been used for disposing waste. Land so used for waste disposal will principally remain, indefinitely, as a waste disposal site. For instance, even though a sanitary landfill may be capped, there will be continual monitoring requirements that can last many years. At the same time, as technological advances are made, additional secondary uses can be made of a former landfill site that are compatible with monitoring objectives. The overlay district is intended to permit secondary uses of waste disposal land area that has been closed or capped, subject to approval by the City and by the New Hampshire Department of Environmental Services.

409.2 Description of Landfill Reclamation District.

The Landfill Reclamation District includes all municipally-owned land within the Heavy Industrial (IND-H) District that is designated as a waste disposal area.

409.3 Permitted Uses.

The following uses are permitted in a closed or capped waste disposal area:

409.4 Special Requirements.

Prior to the issuance of a building permit, all approvals and permits from the New Hampshire Department of Environmental Services and any other applicable regulatory agency or body, including the Lebanon Planning Board, must be obtained for the proposed secondary use and for its site plans.

Section 410 Riverbank Protection District.

410.1 Purposes.

The purpose of the Riverbank Protection District is to protect the health, safety, and general welfare of the people of the City of Lebanon by protecting its water quality and natural resources and by providing reasonable regulations governing the development and use of land adjacent to its rivers, streams, and associated wetlands. More specifically, this District is intended to serve the following purposes:

410.2 Authority.

This section of the Zoning Ordinance is adopted pursuant to the authority granted by RSA 483-B:8, Shoreland Water Quality Protection Act: Municipal Authority and RSA 674:16, Grant of Power to Zone.

410.3 Description of the Riverbank Protection District.

The Riverbank Protection District includes all areas in the City that are located within an area beginning at the ordinary high water mark of the following designated public rivers, streams, and lakes:

as identified by the United States Geological Survey, and depicted on the official Lebanon Riverbank Protection District Overlay Map, and extending inland to fifty (50) horizontal feet, with septic waste systems and fuel storage restrictions extending to one hundred and twenty-five (125) horizontal feet, as set forth in 410.7.F and 410.7.H. Lots granted an Urbanized Shoreland Exemption by the NH Department of Environmental Services pursuant to RSA 483-B:12 are excluded from the Riverbank Protection District and the regulations of Section 410.

410.4 Boundary Disputes.

When questions exist as to the location of the ordinary high water mark, the determination shall be made by the Zoning Administrator, subject to appeal under Section 801.1 of this Ordinance. The City may retain an independent water resource professional to assist with the determination and require the applicant to pay the cost thereof.

410.5 Permitted Uses.

The following uses are permissible within the Riverbank Protection District, provided such use does not involve a structure (except as expressly referenced) and does not alter the surface configuration of the land by the addition of fill, by excavation or by dredging:

410.6 Special Exceptions. for Driveways, Roadways, Parking Areas, and Other Access Ways; Pipelines and Other Transmission Lines.

Upon application to the Board of Adjustment, a special exception may be requested to permit driveways, roadways, parking areas and other access ways; pipelines, powerlines and other transmission lines within the Riverbank Protection District, provided that all of the following conditions are found to exist, in lieu of the findings required by Section 801.3:

410.7 Special Provisions.

410.8 Applications to Board of Adjustment.

Section 411 Pattern Zones Overlay District.

411.1 Purpose.

The purpose of the Pattern Zone Overlay District is to create additional housing that fits the character of the existing neighborhood in Downtown Lebanon and Downtown West Lebanon, to establish and preserve the characteristics of the historical downtown areas of Lebanon and West Lebanon, and to increase density and housing choices in the district.

411.2 Description of Pattern Zones Overlay District.

The areas and boundaries of the Pattern Zone Overlay District are shown on the Pattern Zone Overlay District Map of the City of Lebanon and made a part of this Ordinance and the Official Zoning Map of the City of Lebanon. The Pattern Zone Overlay District Map is attached hereto as Appendix D.

411.3 Permitted Uses.

The Overlay District regulations are intended to only be used for uses allowed within the Pattern Zone Overlay District Table of Uses. Any nonresidential uses shall adhere to regulations set forth in Article III based on the underlying zoning district.

Pattern Zone Overlay District Table of Uses
Permitted Uses Special Exception

Residential:

  1. Up to 2 One-Family Detached Dwellings
  2. Two-Family Dwelling
  3. Accessory Dwelling Unit per Section 610

Commercial/Non-Residential

  1. Any listed in the Base Zoning District pursuant to Article III.

Residential:

  1. Tri-Plex (3 units)
  2. Quad-plex (4 units)
  3. Townhouses / Rowhomes up to 4 units

Commercial/Non-Residential:

  1. Any listed in the Base Zoning District pursuant to Article III.

Conditional Use Permit

Residential:

  1. Cottage Development per Section 509 with a minimum 20,000 sq ft lot

411.4 Table of Areas, Dimensions, and Coverage.

Minimum Lot Requirements Maximum Limitations
Area Frontage Front Yard Side Yard/Corner Side Yard Rear Yard Lot Coverage % of impervious cover Height
4,000 sq. ft. 40' on lot that abuts a street*
15' on a flag shaped lot*
0' if on rear split lot*
*Pursuant to 411.6
10' OR pursuant to 411.11 Front Yard 5' / 7.5' 10' 60% by right
60% - 80% by Special Exception pursuant to 411.8
45'

411.5 Parking.

A minimum of one on-site parking space per dwelling unit is required.

411.6 Creating New Lots in the Overlay District.

411.7 Shading and Buffers.

411.8 Impervious Cover.

411.9 Snow, Garbage, Fuel Tanks.

411.10 Design Requirements.

411.11 Front Yard.

411.12 Approved Designs.