Research Methodology and Data Sources

Breadcrumb: Caldwell / Research / Methodology

Page type: Methodology
Published: 2026-05-05
Last updated: 2026-05-05

Purpose

This page documents the data sources, verification standards, and update protocols that underpin all Caldwell market intelligence published by Renew Group. Every metric, ordinance citation, and market interpretation on this site traces to one of the sources listed below or carries an explicit confidence qualifier.

Publication standard: Caldwell content is built for experienced investors, builders, and developers who underwrite with institutional rigor. Errors in zoning facts, market data, or ordinance citations destroy credibility. We do not publish speculation as fact.

Source Hierarchy

All Caldwell data follows a strict source hierarchy. When multiple sources conflict, we defer to the highest-ranked available source and note the discrepancy.

Tier 1: Government and Official Records

Highest confidence. These sources are treated as authoritative unless proven outdated or superseded.

1. City of Caldwell Municipal Code

   • URL: https://library.municode.com/id/caldwell
   • Scope: Zoning regulations (Title 10), subdivision standards (Title 11), building codes, development standards
   • Update frequency: Ordinance amendments tracked via City Council agendas
   • Confidence: VERIFIED

2. City of Caldwell Official Website

   • URL: https://www.cityofcaldwell.org/
   • Scope: Planning & Zoning Commission agendas, City Council minutes, economic development data, budget documents
   • Update frequency: Real-time for agendas; quarterly for budget/economic reports
   • Confidence: VERIFIED

3. Canyon County Assessor

   • URL: https://www.canyoncounty.id.gov/elected-officials/assessor/
   • Scope: Property tax records, parcel data, assessed values
   • Update frequency: Annual assessment cycle; real-time for ownership transfers
   • Confidence: VERIFIED

4. U.S. Census Bureau

   • API endpoints: ACS 1-Year, Decennial Census, Population Estimates Program (PEP)
   • Scope: Population, demographics, housing unit counts
   • Update frequency: Annual (ACS), decennial (Census), annual (PEP)
   • Confidence: VERIFIED

5. Idaho State Legislature

   • URL: https://legislature.idaho.gov/
   • Scope: State housing law (SB 1352, SB 1354), STR preemption (Idaho Code §67-6539)
   • Update frequency: Legislative session amendments
   • Confidence: VERIFIED

6. Idaho Commerce (Opportunity Zones)

   • URL: https://commerce.idaho.gov/incentives/opportunity-zones/
   • Scope: Federal Opportunity Zone designations
   • Update frequency: Static (2018 designations)
   • Confidence: VERIFIED

Tier 2: MLS and Market Data Platforms

High confidence for pricing and inventory trends. These sources aggregate broker-reported data. We cite the platform, date range, and geographic scope for every metric.

1. Intermountain MLS (IMLS)

   • Scope: Active listings, closed sales, median prices, days on market (Caldwell city limits)
   • Update frequency: Daily for active inventory; monthly for closed sales
   • Confidence: VERIFIED (for reported transactions)
   • Note: New construction sales may be underreported if builders do not list via MLS

2. Redfin Data Center

   • URL: https://www.redfin.com/city/3170/ID/Caldwell/housing-market
   • Scope: Median sale prices, inventory counts, year-over-year trends (Caldwell city limits)
   • Update frequency: Monthly
   • Confidence: VERIFIED (for Redfin-tracked transactions)

3. Realtor.com Market Trends

   • URL: https://www.realtor.com/local/market/idaho/canyon-county/caldwell
   • Scope: Median rents, active listings, market velocity (Caldwell and Canyon County)
   • Update frequency: Monthly
   • Confidence: VERIFIED (for listed properties)

4. 375Loan Market Reports

   • URL: https://375loan.com/caldwell-idaho-housing-market-2026/
   • Scope: Caldwell and Canyon County price trends, new construction share, absorption rates
   • Update frequency: Quarterly
   • Confidence: ESTIMATED (aggregated from multiple MLS sources)

Tier 3: Regional Planning and Research Organizations

Moderate confidence for trend analysis and forecasts. These sources provide context but are not primary data sources for Caldwell-specific metrics.

1. COMPASS Idaho
   • URL: https://compassidaho.org
   • Scope: Regional transportation planning, population forecasts, land-use trends (Ada and Canyon counties)
   • Update frequency: Annual reports; multi-year forecasts
   • Confidence: ESTIMATED (for Caldwell-specific projections)

Tier 4: Renew Internal Analysis

Operator interpretation. All Renew-generated analysis is explicitly labeled as such and separated from sourced fact. We do not present internal models as verified data.

• Renew take: Clearly marked in all content
• Confidence: OPERATOR
• Use case: Trend interpretation, investment thesis, risk assessment, underwriting assumptions

Geographic Scope Definitions

Caldwell data is reported at multiple geographic levels. Every metric on this site includes a scope label.

Diligence note: Canyon County metrics include Nampa (larger than Caldwell). Always verify whether a "Canyon County" stat is dominated by Nampa activity before applying it to Caldwell underwriting.

Confidence Levels

Every data point on this site carries one of four confidence levels:

If a metric lacks a confidence level, do not use it for underwriting.

Update Cadence by Data Type

Last site-wide data refresh: 2026-05-05

Primary Sources: Canonical List

All sources cited in Caldwell content trace to one of the following. Full URLs and access dates are provided in individual page source blocks.

Government and Official Records

1. City of Caldwell Municipal Code — https://library.municode.com/id/caldwell
2. City of Caldwell Official Website — https://www.cityofcaldwell.org/
3. Canyon County Assessor — https://www.canyoncounty.id.gov/elected-officials/assessor/
4. U.S. Census Bureau (ACS, Decennial, PEP) — https://api.census.gov/
5. Idaho State Legislature — https://legislature.idaho.gov/
6. Idaho Commerce (Opportunity Zones) — https://commerce.idaho.gov/incentives/opportunity-zones/
7. U.S. Treasury CDFI Fund (Opportunity Zone master list) — https://www.cdfifund.gov/

MLS and Market Data

8. Intermountain MLS (IMLS) — Broker access only
9. Redfin Data Center — https://www.redfin.com/city/3170/ID/Caldwell/housing-market
10. Realtor.com Market Trends — https://www.realtor.com/local/market/idaho/canyon-county/caldwell
11. 375Loan Market Reports — https://375loan.com/caldwell-idaho-housing-market-2026/
12. Movoto Market Trends — https://www.movoto.com/caldwell-id/market-trends/

Regional Planning

13. COMPASS Idaho — https://compassidaho.org

Renew Internal

14. Renew Internal Analysis — Proprietary models and operator interpretation

Verification Protocol

Before publishing any Caldwell content, Renew editors verify:

1. Ordinance citations: Cross-referenced against live City of Caldwell Municipal Code at library.municode.com
2. Market metrics: Confirmed via at least two Tier 2 sources (MLS platforms) with matching date ranges and geographic scopes
3. Population data: Traced to specific U.S. Census API endpoint with vintage year and estimate type disclosed
4. Effective dates: All ordinance and code references include effective date and amendment history link
5. Confidence levels: Every metric carries a VERIFIED / ESTIMATED / OPERATOR / DATED label

If a fact cannot be verified, it is flagged with `` and not published until resolved.

Disclosure: What This Site Is Not

Renew Group is a licensed real estate brokerage, not a legal, tax, or financial advisory firm. This site provides market intelligence and ordinance summaries to support investor due diligence. It does not constitute:

• Legal advice (verify all zoning and code interpretations with City of Caldwell Planning & Zoning)
• Tax advice (consult a CPA for 1031 exchange, depreciation, or Opportunity Zone questions)
• Financial advice (underwrite all deals with your own lender and financial advisor)
• Investment recommendations (all content is educational; no specific properties are promoted)

Always verify current ordinances, zoning standards, and permit requirements with the City of Caldwell before making any development or acquisition decision.

Contact

Questions about Caldwell data sources or methodology?
Email: research@renewregroup.com
Broker: Eric Giovannucci, SP53785, Silvercreek Realty Group

Change type: created
Change summary: Initial publication of Caldwell research methodology page.
Editor: Renew
Date: 2026-05-05