Overview
Euclidean base zones organized under the Surprise Unified Development Code (Chapter 122, formerly Chapter 106). Naming convention is category-lettered rather than lot-size-encoded: RR (rural residential), R-1a through R-1f (six discrete single-family categories differentiated by lot area and density rather than by numeric suffix), R-2 (medium density), R-3 (high density), C-1/C-2/C-3 (commercial tiers), M-1/M-2 (industrial tiers). PUD / PAD is the dominant mechanism for post-2000 master-planned development (Marley Park, Sun City Grand, Prasada, Desert Oasis). West-valley Maricopa County city ~8-12 miles north-northeast of Luke AFB — MAAMF applicability is less intense than Glendale or Litchfield Park but APZ-2 and 65 dB DNL contours may reach southern/southwestern Surprise parcels. Surprise also operates Surprise Municipal Airport (KSRQ, civilian GA, formerly Glenn Martin Airfield) at the southwest edge of the city, adding a second airspace overlay distinct from Luke MAAMF. | naming_convention_raw=category-suffix-lettered ; sub_flags_raw=[pad-dominant, arizona-housing-bills-2024, state-preemption-active, west-valley-luke-afb-maamf, udc-renumbered-ch106-to-ch122, dual-airport-exposure] ; narrative_ref=narratives/surprise-az/35de36fd-801e-4384-aae3-0bea9706aa98.json
- Code chapter renumbering: Surprise's older codified ordinances reference 'Chapter 106: Zoning' in the legacy enumeration, but the current comprehensive code is organized under 'Chapter 122: Surprise Unified Development Code.' Both chapter numbers appear in active sources depending on document vintage. This causes reliable citation challenges — current UDC §-references under Ch. 122 map to legacy §106-X-Y in older research. Both chapter numbers are preserved in the code_name metadata for bridging. — [UDC Ch. 122; legacy Ch. 106 cross-reference; Municode codification notes]
- Lot-size-NOT-encoded R-1 naming. Unlike lot-size-encoded AZ peers (Goodyear SF-6/9/12, Gilbert R1-6/R1-7/R1-12), Surprise uses SIX discrete R-1 categories (R-1a through R-1f) differentiated by lot area (4,950 → 15,000+ sf) and density (8.8 → 2.9 du/ac) without encoding lot size in the district name. This requires reference to §106-2.3 / Ch. 122 to determine allowable density — the R-1 letter alone does not convey density. Any KPI extractor that assumes numeric-suffix encoding will mis-map Surprise districts to peers. — [UDC Ch. 122 / §106-2.3]
- Luke AFB MAAMF exposure is PARTIAL — not citywide. Surprise is ~8-12 miles north-northeast of Luke AFB (which sits in Glendale). Luke AICUZ DNL 65 dB contours and APZ zones reach into far-southwestern Surprise parcels but do not cover the city center or eastern Surprise. This is a critical geographic distinction from Glendale, Litchfield Park, or Buckeye (where MAAMF covers substantial city land) — MAAMF applies in Surprise as a fringe overlay. Any residential feasibility work must check the parcel position against the current AICUZ map, not assume the overlay does or does not apply at city level. — [Luke AFB AICUZ Study 2020; Luke AFB / Maricopa County JLUS; ARS §28-8481]
+ 6 more in Quirks & notes
Districts
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| RR | Rural Residential | residential | 43,560 sf[4] | 40 ft[5] | 0.25[6] | 0.5[7] | 1[8] | 2[9] | 25[1] / 25[2] / 10[3] |
| R-1a | Residential Low Density — Category 1 (highest-density R-1 subcategory) | residential | 4,950 sf[13] | 35 ft[14] | 0.45[15] | — | 8.8[16] | 2[17] | 20[10] / 5[11] / 15[12] |
| R-1b | Residential Low Density — Category 2 | residential | 6,000 sf[18] | 35 ft[19] | 0.45[20] | — | 7.3[21] | — | — / — / — |
| R-1c | Residential Low Density — Category 3 | residential | 8,000 sf[22] | 35 ft[23] | 0.4[24] | — | 5.4[25] | — | — / — / — |
| R-1d | Residential Low Density — Category 4 | residential | 10,000 sf[26] | 35 ft[27] | 0.4[28] | — | 4.4[29] | — | — / — / — |
| R-1e | Residential Low Density — Category 5 | residential | 12,000 sf[30] | 35 ft[31] | 0.4[32] | — | 3.6[33] | — | — / — / — |
| R-1f | Residential Low Density — Category 6 (lowest-density R-1 subcategory) | residential | 15,000 sf[34] | 35 ft[35] | 0.4[36] | — | 2.9[37] | — | — / — / — |
| R-2 | Residential Medium Density | residential | 3,500 sf[38] | 35 ft[39] | 0.5[40] | — | 3[41] | — | — / — / — |
| R-3 | Residential High Density | residential | 43,560 sf[42] | 60 ft[43] | 0.5[44] | — | 8[45] | 1.75[46] | — / — / — |
| C-1 | Neighborhood Commercial | commercial | — | 35 ft[47] | 0.5[48] | 0.5[49] | — | 4[50] | — / — / — |
| C-2 | Community Commercial | commercial | — | 45 ft[51] | 0.6[52] | 1[53] | — | — | — / — / — |
| C-3 | Regional / Business District Commercial | commercial | — | 55 ft[54] | — | 1.5[55] | — | — | — / — / — |
| M-1 | Light Industrial | industrial | — | 45 ft[56] | 0.6[57] | 1[58] | — | — | — / — / — |
| M-2 | Heavy Industrial | industrial | — | 55 ft[59] | 0.5[60] | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
Southwestern and western Surprise parcels falling within Luke AFB high-noise contours (DNL >= 65 dB) and accident-potential zones as delineated on the adopted Luke AFB AICUZ / JLUS compatibility maps. Luke AFB is located ~8-12 miles south-southwest of the Surprise city center (in Glendale, with AICUZ contours extending north over Litchfield Park, El Mirage, and into southwestern Surprise). Surprise's MAAMF exposure is less intense than Glendale, Litchfield Park, or Buckeye — principally APZ-2 edge zones and 65 dB DNL fringe on extreme southwestern parcels. Surprise is named in the Luke JLUS compact alongside Buckeye, Glendale, Avondale, Litchfield Park, El Mirage, and Goodyear.
FAA Part 77 imaginary surfaces and AICUZ-equivalent noise contours around Surprise Municipal Airport at the southwestern edge of city (near Jomax Rd / Sunrise Ln). Distinct from Luke AFB MAAMF. Applies to civilian GA flight paths on parcels west/southwest of Bell Rd and in the Northwest Valley General Aviation corridor.
Master-planned communities and large-scale mixed-use projects throughout Surprise — Marley Park, Sun City Grand (Del Webb), Desert Oasis, Sierra Verde, Prasada (commercial master plan), Asante, Surprise Farms, Greer Ranch. PUD is the dominant mechanism for post-2000 greenfield development in Surprise, consistent with the broader Phoenix metro pattern. The research markdown documents PUD applications at specific project areas (e.g., southeast corner of 147th Avenue and Beardsley Canal).
Parcels within FEMA-designated Special Flood Hazard Area (SFHA), including Zone A/AE along Waddell Canal, Beardsley Canal, New River tributaries, Agua Fria River (eastern boundary of broader west-valley region), and washes draining toward Skunk Creek. Surprise sits in the Lower Agua Fria watershed; wash drainage is the dominant floodplain mechanism rather than perennial river corridors.
SF-zoned parcels within the majority of Surprise single-family zoning districts (RR / R-1a-f), triggered by HB 2720 applicability at Surprise population ≥ 70,000 threshold. Exempts MAAMF-overlaid parcels per HB 2720 airport-noise carve-out (federal preemption supremacy).
All SF, MF, townhouse, and mixed-use base zoning districts within the Surprise city boundary, triggered by HB 2297 applicability at Surprise population ≥ 75,000 threshold. MAAMF carve-out exempts parcels within Luke AFB >=65 dB DNL contours and APZ.
State preemptions
Adopted building codes
No statewide code; city-level
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- Code chapter renumbering: Surprise's older codified ordinances reference 'Chapter 106: Zoning' in the legacy enumeration, but the current comprehensive code is organized under 'Chapter 122: Surprise Unified Development Code.' Both chapter numbers appear in active sources depending on document vintage. This causes reliable citation challenges — current UDC §-references under Ch. 122 map to legacy §106-X-Y in older research. Both chapter numbers are preserved in the code_name metadata for bridging. — [UDC Ch. 122; legacy Ch. 106 cross-reference; Municode codification notes]
- Lot-size-NOT-encoded R-1 naming. Unlike lot-size-encoded AZ peers (Goodyear SF-6/9/12, Gilbert R1-6/R1-7/R1-12), Surprise uses SIX discrete R-1 categories (R-1a through R-1f) differentiated by lot area (4,950 → 15,000+ sf) and density (8.8 → 2.9 du/ac) without encoding lot size in the district name. This requires reference to §106-2.3 / Ch. 122 to determine allowable density — the R-1 letter alone does not convey density. Any KPI extractor that assumes numeric-suffix encoding will mis-map Surprise districts to peers. — [UDC Ch. 122 / §106-2.3]
- Luke AFB MAAMF exposure is PARTIAL — not citywide. Surprise is ~8-12 miles north-northeast of Luke AFB (which sits in Glendale). Luke AICUZ DNL 65 dB contours and APZ zones reach into far-southwestern Surprise parcels but do not cover the city center or eastern Surprise. This is a critical geographic distinction from Glendale, Litchfield Park, or Buckeye (where MAAMF covers substantial city land) — MAAMF applies in Surprise as a fringe overlay. Any residential feasibility work must check the parcel position against the current AICUZ map, not assume the overlay does or does not apply at city level. — [Luke AFB AICUZ Study 2020; Luke AFB / Maricopa County JLUS; ARS §28-8481]
- Dual-airport exposure: Surprise has MAAMF (military, Luke AFB, southwest fringe) AND Surprise Municipal Airport (KSRQ/KSUA, civilian GA, at the southwestern edge of the city). The civilian airport adds its own FAA Part 77 imaginary surface overlay on approach corridors, distinct from Luke MAAMF. Where the two overlap on rare far-southwest parcels, MAAMF controls. Surprise is one of few AZ cities with both military and municipal airport overlays — the pattern is shared with Goodyear (Luke AFB MAAMF + Goodyear Municipal KGYR GMA-AO). — [Luke AFB AICUZ Study; FAA Part 77; Surprise Municipal Airport master plan]
- PUD / PAD dominance. Surprise has extensively used PUD overlays for post-2000 master-planned development — Marley Park, Sun City Grand (Del Webb), Desert Oasis, Sierra Verde, Prasada, Asante, Greer Ranch. Most new residential acreage flows through PUD rezoning rather than base RR/R-1a-f/R-2/R-3 districts. Base district dimensional standards have limited operative effect on greenfield projects — they govern infill and smaller parcels. Mirrors the Phoenix-metro development-entitlement pattern. — [UDC Ch. 122 Article VI; City of Surprise PUD project records]
- R-3 density encoding is unusual: 1-acre minimum lot + 8+ du/ac NET density floor + 4 du/lot-of-record minimum + 150 sf/DU open space. The 'min 4 DU per lot of record' is a FLOOR not a ceiling — this is a density-facilitation mechanic rather than a density cap. Combined with the 60 ft height ceiling and 150 sf/DU open space requirement, R-3 practical ceilings are determined by envelope + open space math rather than by a stated max du/ac value. Atypical for AZ peers that use stated max du/ac caps. — [UDC Ch. 122 / §106-2.5]
- Maricopa County Flood Control District jurisdiction: Surprise floodplain standards are primarily defined by Maricopa FCD (countywide entity) rather than local UDC. Local Surprise UDC floodplain provisions defer to county/FEMA standards rather than defining them locally. Compliance inquiries must go to Maricopa FCD, not just Surprise Planning. This is common for Maricopa County municipalities but creates a split-jurisdiction lookup for developers. — [Maricopa County FCD regulations; FEMA FIRM 04013C; UDC Ch. 122 floodplain]
- Surprise population ~162,000 places it firmly above all three AZ state preemption thresholds (HB 2720 70k, HB 2297 75k, HB 2721 70k). Unlike smaller west-valley peers (El Mirage ~35k, Litchfield Park ~7k), ALL 2024 AZ housing preemptions apply to Surprise in their strongest form. Middle housing (duplex/triplex/fourplex), by-right ADU, and 5,000 sf min-lot-size cap ALL apply — subject only to the MAAMF carve-out on southwestern parcels. — [AZ HB 2720 (2024); AZ HB 2297 (2024); AZ HB 2721 (2024); 2024 Census PEP]
- HB 2720 / HB 2297 / HB 2721 statutory airport-noise carve-outs explicitly preserve Luke AFB MAAMF (>=65 dB DNL + APZ) and arguably KSRQ/KSUA >=65 dB contours as binding even where state preemption would otherwise override local restriction. This creates a federal-state-local conflict pattern where the MAAMF / civilian-airport boundary is the controlling geographic feature for ADU / middle housing / min-lot-size applicability. Due diligence must check airport-overlay position BEFORE asserting HB 2720/2297/2721 entitlements on southwestern parcels. — [AZ HB 2720 §airport-carve-out; HB 2297 §airport-carve-out; HB 2721 §airport-carve-out; ARS §28-8481]
Formulas
Definitions
- height
- Measured from finished grade to highest point of roof structure; mechanical penthouses and antennae excluded per UDC general provisions
- lot_coverage
- Principal and accessory building footprint / lot area
- far
- Gross floor area / lot area
- du_ac
- Dwelling units per gross acre (pre-entitlement); R-3 uses net density floor
- setback_front
- Distance from front property line to nearest building face
- setback_side
- Distance from side property line to nearest building face
- setback_rear
- Distance from rear property line to nearest building face
- parking
- Minimum required spaces per dwelling unit or per 1,000 sf for nonresidential use
- open_space_per_du
- Minimum usable open space per dwelling unit (R-3: 150 sf/DU)
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- buildable_width_ft
lot_width_ft - setback_side_ft * 2- buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft- sf_typical
R-1a through R-1f: 3.6-8.8 du/ac depending on lot category- mf_standard
R-3: 8+ du/ac net density floor; practical ceiling determined by height + open space- pud_override
PUD / PAD rezone replaces base dimensional standards with project-specific development standards table
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
- [1] UDC Ch. 122 / §106-2.2
- [2] UDC Ch. 122 / §106-2.2
- [3] UDC Ch. 122 / §106-2.2
- [4] UDC Ch. 122 / §106-2.2
- [5] UDC Ch. 122 / §106-2.2
- [6] UDC Ch. 122 / §106-2.2
- [7] UDC Ch. 122 / §106-2.2
- [8] UDC Ch. 122 / §106-2.2
- [9] UDC Ch. 122 parking article
- [10] UDC Ch. 122 / §106-2.3
- [11] UDC Ch. 122 / §106-2.3
- [12] UDC Ch. 122 / §106-2.3
- [13] UDC Ch. 122 / §106-2.3
- [14] UDC Ch. 122 / §106-2.3
- [15] UDC Ch. 122 / §106-2.3
- [16] UDC Ch. 122 / §106-2.3
- [17] UDC Ch. 122 parking article
- [18] UDC Ch. 122 / §106-2.3
- [19] UDC Ch. 122 / §106-2.3
- [20] UDC Ch. 122 / §106-2.3
- [21] UDC Ch. 122 / §106-2.3
- [22] UDC Ch. 122 / §106-2.3
- [23] UDC Ch. 122 / §106-2.3
- [24] UDC Ch. 122 / §106-2.3
- [25] UDC Ch. 122 / §106-2.3
- [26] UDC Ch. 122 / §106-2.3
- [27] UDC Ch. 122 / §106-2.3
- [28] UDC Ch. 122 / §106-2.3
- [29] UDC Ch. 122 / §106-2.3
- [30] UDC Ch. 122 / §106-2.3
- [31] UDC Ch. 122 / §106-2.3
- [32] UDC Ch. 122 / §106-2.3
- [33] UDC Ch. 122 / §106-2.3
- [34] UDC Ch. 122 / §106-2.3
- [35] UDC Ch. 122 / §106-2.3
- [36] UDC Ch. 122 / §106-2.3
- [37] UDC Ch. 122 / §106-2.3
- [38] UDC Ch. 122 / §106-2.4
- [39] UDC Ch. 122 / §106-2.4
- [40] UDC Ch. 122 / §106-2.4
- [41] UDC Ch. 122 / §106-2.4
- [42] UDC Ch. 122 / §106-2.5
- [43] UDC Ch. 122 / §106-2.5
- [44] UDC Ch. 122 / §106-2.5
- [45] UDC Ch. 122 / §106-2.5
- [46] UDC Ch. 122 parking article
- [47] UDC Ch. 122 Commercial Division
- [48] UDC Ch. 122 Commercial Division
- [49] UDC Ch. 122 Commercial Division
- [50] UDC Ch. 122 parking article
- [51] UDC Ch. 122 Commercial Division
- [52] UDC Ch. 122 Commercial Division
- [53] UDC Ch. 122 Commercial Division
- [54] UDC Ch. 122 Commercial Division
- [55] UDC Ch. 122 Commercial Division
- [56] UDC Ch. 122 Industrial Division
- [57] UDC Ch. 122 Industrial Division
- [58] UDC Ch. 122 Industrial Division
- [59] UDC Ch. 122 Industrial Division
- [60] UDC Ch. 122 Industrial Division
Research status
Publication gates
| primary url present | passed | source.primary_url = https://library.municode.com/az/surprise/codes/code_of_ordinances?nodeId=PTIICOOR_CH122UNDECO — Library.Municode canonical publisher for Surprise UDC Ch. 122. Platform = municode. Not an aggregator. Supplementary city-hosted URLs at surpriseaz.gov listed as secondary, not primary. |
|---|---|---|
| no aggregator cited | passed | Profile and narrative scan found no zoneomics/steadily/siteplanguide/siteplancreator/propwire/zonara/unzoned references. All citations point to UDC Ch. 122 / legacy §106-X-Y, Arizona Legislature session laws (HB 2720 / HB 2297 / HB 2721 / HB 2110), ARS §-references (§28-8481, §9-461.18, §9-471), FAA Part 77, FEMA FIRM 04013C, Luke AFB AICUZ, Maricopa County FCD, and Census PEP primary-data inputs. |
| confidence tags full form | passed | All base_districts fields carry {value, status, citation} with UDC Ch. 122 / §106-X-Y form. All overlays carry status + citation. Partial claims carry explicit reason fields. No bare [confirmed] or single-glyph confidence tokens remain (v1 used {v, c: 'p'} shorthand with no section citations; v2 upgrades to full-form and bridges the Ch. 106 → Ch. 122 renumbering). |
| overlays have parameters trigger confidence | passed | 6/6 overlays (MAAMF, KSUA-AO, PUD, FOD, MHOD, ADUOD) have non-empty parameters (5-8 keys each), geographic_trigger populated with specific geography (southwestern Surprise / Luke AICUZ contours; Surprise Municipal Airport approach corridors; master-planned communities by name; FEMA SFHA wash corridors; HB 2720/2297 applicability on SF/MF/MU zones), status in {confirmed, partial}, and citation populated. v1 had 3 thin overlays (PUD, FOD, 'Additional' — a schema-projection placeholder); v2 expands to 6 with MAAMF + KSUA-AO + MHOD + ADUOD added and the AOD placeholder removed. |
| preempt section city specific | passed | state_preemptions_applicable[] contains 6 Surprise-specific entries (HB 2720, HB 2297, HB 2721, HB 2110, Prop 207, federal Luke AFB MAAMF) with Surprise-specific qualifying_condition (population ~162k from 2024 Census PEP checked against each law's threshold; Surprise SF district inventory matched to preempted categories; west-valley Luke AFB geographic proximity noted), effect, effective_date, and local_status narrative. MAAMF carve-out mechanic explicitly documented on HB 2720/2297/2721 entries. Not a link-stub — replaces v1's 'state_preemptions: state-preemptions/az.md' bare path string. |
Data quality
- Commercial (C-1/C-2/C-3) and industrial (M-1/M-2) dimensional standards not directly retrieved from current UDC this pass — parameters carry status=partial with explicit reason fields. R-1 sub-category setback values not in the accessed excerpt. Surprise-specific MHOD and ADUOD implementing ordinance dates and section numbers require direct Municode retrieval. MAAMF specific UDC article requires direct retrieval. Surprise Municipal Airport overlay section requires direct retrieval. Next-pass actions documented in DELTA.md.
Known issues
Verification
| last_verified_at | 2026-04-19T00:00:00Z |
|---|---|
| verifier_specialist | verification-pass |
| verifier_version | 1.0 |
| verification_result | partial |
| atomic_claims_checked | 54 |
| atomic_claims_confirmed | 28 |
| atomic_claims_partial | 18 |
| atomic_claims_inferred | 5 |
| atomic_claims_not_found | 3 |
| failed_claims | |
| notes | Verification-pass at a partial result because 18 atomic claims carry status=partial (principally: UDC airport-overlay specific article, MHOD/ADUOD implementing ordinance dates, C-1/C-2/C-3 and M-1/M-2 dimensional standards, setback-specific values in R-1 subcategories). All partial claims carry explicit reason fields. Zero failed claims. Primary-URL and aggregator gates are CLEAN (no zoneomics/steadily/siteplanguide citations). Ordinance section citations use UDC Ch. 122 / §106-X-Y dual-reference form to bridge the renumbering. State preemption applicability is analytically confirmed from population threshold + primary Census data. |
| narrative_ref | narratives/surprise-az/35de36fd-801e-4384-aae3-0bea9706aa98.json |
Other cities in this state
Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.