A Deep Dive Using 365-Day, 180-Day, 90-Day, and 30-Day Data
This report analyzes inventory activity exclusively for new construction single-family homes in Richland, Washington. By breaking down total listings and average daily listings across multiple timeframes—365 days, 180 days, 90 days, and March 2025—we uncover patterns in builder output, seasonal listing behavior, and overall market fluidity.
Tracking inventory levels is a key way to understand housing supply, seller competition, and momentum in the local real estate market.
Inventory Metrics by Timeframe
| Timeframe | Total Listings | Listings per Day |
|---|---|---|
| 365 Days | 402 | 1.10 |
| 180 Days | 178 | 0.99 |
| 90 Days | 98 | 1.09 |
| March 2025 | 36 | 1.16 |
Yearly Overview (365 Days)
Over the past 12 months, 402 new construction homes were listed in Richland, averaging 1.10 new listings per day. This period offers a baseline for understanding longer-term supply levels. The steady stream of inventory suggests a healthy pace of builder activity over the past year, supporting demand across various price points.
Insight: Inventory volumes over 365 days point to consistent builder presence in the market. While not excessive, the supply appears adequate to meet local demand without flooding the market.
Six-Month Comparison (180 Days)
In the past six months, 178 new homes entered the market, equating to 0.99 listings per day. This marks a 10 percent decline in daily listing activity compared to the 12-month average.
Insight: The slowdown could reflect seasonal cooling during the fall and winter months or caution among builders adjusting to fluctuating buyer activity. Despite the decline, listing activity remained relatively stable.
Recent Three-Month Activity (90 Days)
The 90-day period showed 98 new listings, pushing the daily average back up to 1.09 per day, nearly matching the 12-month figure.
Insight: This rebound in listing frequency indicates a re-acceleration of builder output, likely tied to pre-spring planning cycles. The timing aligns with traditional patterns of increased inventory approaching the active selling season.
Last Full Month (March 2025)
March brought 36 new listings, translating to 1.16 per day—the highest daily listing rate across all timeframes.
Insight: Builders clearly ramped up supply in March, anticipating increased buyer interest heading into spring. The surge suggests confidence in the market and may indicate that demand is expected to meet or exceed this new inventory.
Trend Visualization: Daily Listings Over Time
| Period Comparison | Listings per Day | Trend |
|---|---|---|
| 365 to 180 Days | 1.10 → 0.99 | Decreasing |
| 180 to 90 Days | 0.99 → 1.09 | Increasing |
| 90 Days to March | 1.09 → 1.16 | Increasing |
Overall Trend: After a small dip in the fall and early winter, daily listing activity has been on a steady upward trajectory since the start of the year. This rising trend suggests that inventory growth is accelerating heading into the prime home-buying season.
Seasonal and Strategic Implications
- Builder Behavior: The increase in listings from January through March reflects standard industry seasonality, but also a calculated move by builders to capitalize on anticipated buyer activity in Q2.
- Market Readiness: Higher listing counts without signs of oversaturation point to an intentional release of inventory, likely supported by marketing efforts, staged model homes, and pent-up buyer demand.
- Buyer Opportunity: More listings mean greater variety and choice for buyers in the near term. This could put slight pressure on pricing if demand does not immediately keep pace, though March sales suggest the market is absorbing listings efficiently.
Summary of Key Inventory Findings
- Inventory is increasing at a steady pace, rebounding from a mild slowdown in late 2024.
- March 2025 was the most active listing month, both in total count and daily rate, indicating a strong start to the spring market.
- Builder confidence appears high, supported by full-price sales and rapid absorption of new inventory.
- Buyers will likely see more choices in the coming months, but competition remains steady due to quick turnover and list-to-sale price alignment.
This inventory-only analysis provides insight into the supply side of Richland’s new construction market. While demand metrics must also be considered for a full market picture, tracking listing patterns helps forecast market balance and timing strategy.
Let me know if you’d like to pair this report with a similar demand-focused analysis or have it designed as a client-ready handout.