Foundation documents — Portsmouth
LocalPortsmouth Master Plan Update, Draft Framework — Planning Board presentation, Mar 26, 2026 (Utile/City of Portsmouth); basis for v2.9 alignments to Z-37, Z-15, Z-33, P-5, Z-21
LocalPortsmouth Housing Committee Minutes — Apr 23, 2026 (City of Portsmouth); Planning Department staff comments on 26 shortlisted action items, basis for v2.16 staff_note field
LocalPortsmouth Housing Committee Minutes — May 21, 2026 (City of Portsmouth); member priority straw poll across 14 action items, Stith's "79-E bucket" and "Zoning Audit bucket" structural framing, basis for v2.18 committee_priority field. Full meeting summary at meeting-notes/2026-05-21-summary.md
LocalPortsmouth City Council Agenda — Monday, June 22, 2026, Item 15B (Cook): motion to direct Planning & Sustainability, with the Housing Committee and Planning Board, to review pre-approved ADU plans from other communities for possible local adoption. Cook memo references Mariposa County CA, Eugene OR, and Massachusetts ADU Design Challenge as precedents. Reflected in P-14 status_detail. Progress Portsmouth agenda preview at progressportsmouth.com/hubfs/digest_06_22_2026.html
LocalPortsmouth Housing Committee Meeting Notes — June 11, 2026 (City of Portsmouth Planning Department, DRAFT). Confirms the committee's citywide RSA 79-E direction (Housing Opportunity Zone overlay + office/commercial conversion + rehabilitation), the coastal-resilience set-aside, and the below-quorum staff-direction motion. Reconciled against the Progress Portsmouth working summary at meeting-notes/2026-06-11-summary.md; one attendance discrepancy flagged pending verification.
LocalHousing Action Plan — Implementation Matrix, June 30, 2026 (City of Portsmouth Planning Department, DRAFT). Nine numbered priorities with leads, timeframes, metrics, and milestones; basis for the June 30 matrix positions noted (provisional) in I-4, Z-1, Z-9, Z-10, Z-21, Z-25.
LocalHousing Action Plan — DRAFT for July 9, 2026 (City of Portsmouth Planning & Sustainability). Narrative plan for Council submission; still fluid and not yet adopted. Basis for provisional July 9 context across affected items.
LocalHousing Committee Ranking List — working draft, May 2026 (City of Portsmouth Planning Department); synthesis of May 21 straw poll and later signals, with explicit rank assignments. 11 items scored. Basis for v2.19 committee_priority field replacing the May 21 record. Includes staff recommendations to retire Z-18 (room rental — already permitted) and Z-19 (seasonal worker housing — covered by co-living ordinance), and retitle Z-21 (audit → ordinance update).
LocalPortsmouth 2017 Master Plan — Housing & Land Use chapters (Actions 1.1–5.5)
LocalCity Council Housing Policy 2016-01 (Perkins, Dec 2016) — Master Plan Strategy attachment
LocalPortsmouth Housing Committee Work Plan 2024–25
LocalRKG Associates Housing Needs Assessment, 2022
LocalPlaces to Live Dialogue — community engagement record, 2024
LocalBlue Ribbon Committee on Housing, 2016
LocalPortsmouth Planning Board — HAP presentations, Feb–Mar 2026
GISByron Matto GIS parcel analysis (Jan 2026) — zoning yield estimates, SRB district buildout, parcel-level housing capacity modeling; underlies all high/medium confidence yield figures in this Explorer
Comparable plans
NHKeene Housing Action Plan
MESouth Portland Housing Production Plan
WABurien Housing Action Plan
State law & guidance
Federal21st Century ROAD to Housing Act (2026) — enacted July 11, 2026 without presidential signature (Senate 85–5, House 358–32). Basis for the v2.23 federal_ref field on PL-1, I-14, P-14, and HTF-3. Plain-language Portsmouth mapping in the Progress Portsmouth module at road-to-housing-portsmouth.html. Grant programs referenced are authorized but not yet appropriated.
NH RSAHB 577 (2025) — ADU reform, amending RSA 674:71–73; eff. 7/1/25
NH RSAHB 631 (2025) — Multifamily on commercial land; adaptive reuse exemptions; eff. 7/1/26
NH RSASB 284 (2025) — Residential parking cap (1 space/unit max); eff. 9/13/25
NH RSASB 283 (2025) — Below-grade FAR exclusion; eff. ~Nov 2025
NH RSAHB 457 (2025) — Occupancy restriction limits; eff. 9/13/25
NH RSASB 282 (2025) — Single-stairway buildings up to 4 floors; eff. 9/13/25
NH RSARSA 79-E — Community Revitalization Tax Relief Incentive
NH RSARSA 672:1, III-e — Prohibition on unreasonable discouragement of affordable housing through zoning powers
NH RSARSA 676:3,I (amended Aug 2022) — Written findings of fact required for all land use board disapprovals; failure to provide is grounds for automatic reversal on appeal
NH RSARSA 674:58–61 — Workforce Housing statute
NH CaseRichmond Co. v. City of Concord, 149 N.H. 312 (2003) — Established constitutional duty of planning boards to assist citizens; land use process is not adversarial
NH CaseAppeal of Town of Windham, NH Supreme Court No. 2021-0473 (2022) — Boards may not use dilatory tactics or shift burden to applicant in ways that unreasonably discourage housing
NH CaseDartmouth v. Hanover (2018) — Boards may not rely on lay opinion or personal views to override uncontroverted expert evidence or specific ordinance criteria
NHMAStephen C. Buckley, Planning Board Basics — 2024 Spring Planning and Zoning Conference (NH Office of Planning & Development)
NHMAChanges to Planning & Zoning Laws in 2025 (Revised Aug 13, 2025)
NHMARevised Law on Accessory Dwelling Units — 2025 Edition (Aug 12, 2025)
NH HousingMunicipal Guide to RSA 79-E — Portsmouth City Council presentation, Mar 2026 (Wrightsman)
National research
AEIAEI Housing Supply Accelerator — reform framework and benchmarking
ResearchIvory Innovations Housing Affordability Index
NHFANH Housing Finance Authority — workforce housing data and reports
NZANational Zoning Atlas — NH coverage by Saint Anselm College (data frozen Jun 1, 2024)