--- title: "Seasonal housing comparisons on an agent website" description: "Plan seasonal market comparisons with clear adjustment labels, matching periods, source methods, visible limits, and a repeatable editorial review" canonical: "https://scalewithsearch.com/articles/seasonal-comparisons-agent-market-report" --- ## Site navigation - [Scale With Search](https://scalewithsearch.com/) - Services - Services - [AI systems](https://scalewithsearch.com/ai-systems) - [Site build](https://scalewithsearch.com/work#site-build) - [Whole website fix](https://scalewithsearch.com/work#whole-website-fix) - [Content library with SEO](https://scalewithsearch.com/work#content-library) - [Working session](https://scalewithsearch.com/audit) - Start here - [Send your brief](https://scalewithsearch.com/work#send-your-brief) - [Example scope](https://scalewithsearch.com/work#review-the-example-scope) - [Prices and terms](https://scalewithsearch.com/work#prices-and-terms) - Industries - Real estate - [Real estate agents and teams](https://scalewithsearch.com/for/real-estate) - [Platforms, ownership, and IDX](https://scalewithsearch.com/for/real-estate/real-estate-website-platforms-ownership-idx) - [Search, content, and AI](https://scalewithsearch.com/for/real-estate/real-estate-search-content-ai) - [Inquiries, campaigns, and handoffs](https://scalewithsearch.com/for/real-estate/real-estate-website-inquiries-campaigns-handoffs) - [Buyer, seller, and local pages](https://scalewithsearch.com/for/real-estate/real-estate-buyer-seller-local-resources) - [Rules, privacy, and trust](https://scalewithsearch.com/for/real-estate/real-estate-website-rules-privacy-trust) - Browse by business - [Trades and home services](https://scalewithsearch.com/for/#group-trades) - [Health, wellness, and animal care](https://scalewithsearch.com/for/#group-practices) - [Law, finance, and IT](https://scalewithsearch.com/for/#group-professional) - [Marketing and SEO agencies](https://scalewithsearch.com/for/#group-agencies) - [Shops and manufacturers](https://scalewithsearch.com/for/#group-manufacturing) - [Restaurants, shops, studios, and nonprofits](https://scalewithsearch.com/for/#group-local-services) - Chiropractic practices - [Chiropractic and wellness practices](https://scalewithsearch.com/for/chiropractic-and-wellness-practices) - [Chiropractic and physical therapy clinics](https://scalewithsearch.com/for/chiropractic-and-physical-therapy-clinics) - [All industries](https://scalewithsearch.com/for/) - Resources - Free tools - [AI readiness check](https://scalewithsearch.com/check) - [Free tools](https://scalewithsearch.com/tools/) - [Free Starter Kit](https://scalewithsearch.com/kit/business-memory-starter-kit.zip) - Guides - [AI-native library](https://scalewithsearch.com/ai-native) - [Industry intelligence](https://scalewithsearch.com/intelligence) - [Office job guides](https://scalewithsearch.com/guides/) - [Business memory](https://scalewithsearch.com/articles/business-memory-for-ai-agents-guide) - [Agent governance](https://scalewithsearch.com/articles/ai-agent-governance-guide-small-business) - [Migration and ownership](https://scalewithsearch.com/articles/leaving-vendor-ai-memory-guide) - Articles - [All articles](https://scalewithsearch.com/articles/) - [What changed](https://scalewithsearch.com/changes/) - About - Evidence - [Proof](https://scalewithsearch.com/proof) - Scale With Search - [About](https://scalewithsearch.com/about) - [How it works](https://scalewithsearch.com/how-it-works) # Seasonal housing comparisons on an agent website A seasonal market comparison should state whether its figures are raw observations or a publisher's adjusted series. Keep the measurement period and adjustment label attached to each chart. Make the comparison understandable before drawing a conclusion about a market shift. This guide specifies the comparison layer of an agent's market report. It does not calculate seasonal factors, establish local conditions, or forecast a property's outcome. ## What question should the comparison answer? Choose between describing the observed seasonal pattern and comparing activity after a source's seasonal adjustment. State that purpose before selecting the series. Do not use one chart to answer both questions without explaining the difference. Give readers the source definition and the actual time period alongside the result. ## Why can winter-to-summer comparisons mislead? NAR explains that seasonal differences can obscure underlying resale trends. Its methodology uses seasonal adjustment to support comparisons across months and quarters. [NAR sales methodology, checked 2026.10.23](https://www.nar.realtor/research-and-statistics/housing-statistics/existing-home-sales/methodology). Avoid interpreting an unreviewed calendar change as proof of a new downturn. Ask the editor to assess the chosen series before writing the commentary. ## Does every measure receive the same adjustment? No. NAR says its sales prices are not seasonally adjusted, while its methodology describes adjusted annualized sales activity. [NAR price and sales treatment, checked 2026.10.23](https://www.nar.realtor/research-and-statistics/housing-statistics/existing-home-sales/methodology). Keep the adjustment label at the metric level. Do not place one adjusted-data badge above a table containing unlike series. ## What should the source register contain? Record enough information to repeat the selection. Keep the register with the page's working files, then publish the fields readers need to interpret the chart. | Source field | What to record | | --- | --- | | Publisher and series | Exact name and method link | | Measure | Definition, unit, and aggregation | | Period | Observation window and release date | | Geography | Source boundary and identifier | | Population | Property categories and selection filters | | Adjustment | Publisher's adjusted or unadjusted label | | Revisions | Edition used and later correction status | Treat an undocumented adjustment label as unresolved. Do not add one because a graph looks smoother. ## Can the editor adjust local data by subtracting a national pattern? Do not specify that shortcut in the website brief. Use the publisher's documented local series or obtain a qualified method review before creating a new estimate. Label any newly modeled result separately from observed source data. Keep the method and limitations available. Leave the proposed adjusted panel unpublished while its basis remains unresolved. ## How do different publishers handle adjustment? Check each publisher's method. Redfin documents seasonal adjustment for monthly data and a different approach for certain weekly measures. It also identifies weekly measures it publishes without adjustment. [Redfin Data Center methodology, checked 2026.10.23](https://www.redfin.com/news/data-center/methodology/). Avoid assuming that another provider's export uses the same treatment. Record the selected field and source edition before reusing an existing chart template. ## Is a same-month comparison sufficient by itself? Use the same-month comparison as a defined comparison, then review changes in boundary, property scope, definitions, and completeness. Keep those checks visible in the editorial record. Do not call two observations comparable solely because their month names match. Explain any remaining limitation beside the conclusion rather than hiding it in an internal spreadsheet. ## How should year-to-date charts work? Use matching start and end periods and identify any incomplete latest period. Ask the editor to verify the publisher's coverage before using the newest row. Keep completed-year figures separate from partial-year observations. Use the [inventory report guide](/articles/absorption-and-inventory-agent-market-report) to specify the source, period, and formula for any supply panel. Give the editor the same context for the year-to-date comparison. ## What should happen when the source revises history? Review affected figures and narrative together. NAR's methodology describes annual revisions to its seasonal adjustment factors and associated sales series. [NAR revision method, checked 2026.10.23](https://www.nar.realtor/research-and-statistics/housing-statistics/existing-home-sales/methodology). Keep the source edition and website review date separate. Add a correction explanation when a published comparison changes. Do not silently preserve old commentary above revised figures. ## Can the chart establish an individual home's value? Keep it descriptive of its selected population. Invite a property-specific conversation when a reader asks what the data means for their own home. Use the [median and average price guide](/articles/median-average-prices-agent-market-report) for the price-statistic explanation. Avoid converting the chart's percentage change into every homeowner's appreciation. ## What should mobile and downloaded versions retain? Keep period labels, source, unit, adjustment treatment, and the short limitation beside the data. Give the chart a readable text explanation. If the site includes a download, require the same evidence labels there. Test the exported version separately. A chart copied out of context should still identify what was measured. ## Which checks belong in the acceptance record? Reproduce selected values from the retained source and inspect the displayed labels. Include a missing period, revised history, unlike adjustment labels, and changed source definition in the review cases. Require a reviewer to approve the narrative after checking the figures. These are proposed checks for the eventual implementation, not a claim that a website or analysis has already passed. ## Bring seasonal comparisons into your report scope Use the [real estate website guides](/for/real-estate) to prepare the source register and chart requirements. Describe the comparison, maintenance process, and acceptance evidence in your [written work request](/work). - [Absorption and inventory: publish a real estate market report readers can interpret](/articles/absorption-and-inventory-agent-market-report) - [Median or average home prices: label a real estate website report correctly](/articles/median-average-prices-agent-market-report) - [Real estate CRM and website: map forms to contact records](/articles/real-estate-crm-and-website) ## Related: Real estate - [Absorption and inventory: publish a real estate market report readers can interpret](/articles/absorption-and-inventory-agent-market-report) - [Median or average home prices: label a real estate website report correctly](/articles/median-average-prices-agent-market-report) - [Real estate CRM and website: map forms to contact records](/articles/real-estate-crm-and-website) ---- ```text .|########||. .|########||. .|########||. |##||. .||##|. |##||. .||##|. |##||. .||##|. |#|. .|#|. |#|. .|#|. |#|. .|#|. |#| |#| |#| |#| |#| |#| .#| |#. .#| |#. .#| |#. .#. .#| .#. .#| .#. .#| |#. .#| |#. .#| |#. .#| |# ...... #| |# ...... #| |# ...... #| .# ||#########| #| .# ||#########| #| .# ||#########| #| .#. |######||######|. .#. .#. |######||######|. .#. .#. |######||######|. .#. #. .##|###|##|#|######| .# #. .##|###|##|#|######| .# #. .##|###|##|#|######| .# || |##|#||||||||||||#||#| || || |##|#||||||||||||#||#| || || |##|#||||||||||||#||#| || # |#||||||||||||||||||||#| #. # |#||||||||||||||||||||#| #. # |#||||||||||||||||||||#| #. || |#||||||||||||||||||||||#| || || |#||||||||||||||||||||||#| || || |#||||||||||||||||||||||#| || # .#||||||||||||||||||||||||#| # # .#||||||||||||||||||||||||#| # # .#||||||||||||||||||||||||#| # || ....|||#||||||##|#|||#|#||##||||....|. || || ....|||#||||||##|#|||#|#||##||||....|. || || ....|||#||||||##|#|||#|#||##||||....|. || #. . ....|# ....#||| ||| .#||| ....#. .# #. . ....|# ....#||| ||| .#||| ....#. .# #. . ....|# ....#||| ||| .#||| ....#. .# # . ||||#| .#####|| . .#| .#||| ||||# #. # . ||||#| .#####|| . .#| .#||| ||||# #. # . ||||#| .#####|| . .#| .#||| ||||# #. .| ||||| #. |#|||||. || #. |#||. .||||| || .| ||||| #. |#|||||. || #. |#||. .||||| || .| ||||| #. |#|||||. || #. |#||. .||||| || || |.... #. ....|#. |. ...|. ....|| || || |.... #. ....|#. |. ...|. ....|| || || |.... #. ....|#. |. ...|. ....|| || #. .||||||##||||||##||####|||||||#||||||#| .# #. .||||||##||||||##||####|||||||#||||||#| .# #. .||||||##||||||##||####|||||||#||||||#| .# # .||####|###########################|. # # .||####|###########################|. # # .||####|###########################|. # # .#||||||.#.|| # |. ..# #| #|||||#| # # .#||||||.#.|| # |. ..# #| #|||||#| # # .#||||||.#.|| # |. ..# #| #|||||#| # # .#|||||| .. |# ## |#| ...#|#|||#| # # .#|||||| .. |# ## |#| ...#|#|||#| # # .#|||||| .. |# ## |#| ...#|#|||#| # # .#|||#|# .# .#| #| ##|.#..#|||||#| # # .#|||#|# .# .#| #| ##|.#..#|||||#| # # .#|||#|# .# .#| #| ##|.#..#|||||#| # # .#||||||############|######|||||#| # # .#||||||############|######|||||#| # # .#||||||############|######|||||#| # # |...||#||||||#||||#|#||||||#|||||#||| |.| # # |...||#||||||#||||#|#||||||#|||||#||| |.| # # |...||#||||||#||||#|#||||||#|||||#||| |.| # #. .. ||||# .|||##|. |#| .|| || .|||#. #| # .# #. .. ||||# .|||##|. |#| .|| || .|||#. #| # .# #. .. ||||# .|||##|. |#| .|| || .|||#. #| # .# || | ...|| ...##| | #| .|. |. ##### .. .| || || | ...|| ...##| | #| .|. |. ##### .. .| || || | ...|| ...##| | #| .|. |. ##### .. .| || || ||||| || ||||#| . |. |. |#. ||||| |#| || || || ||||| || ||||#| . |. |. |#. ||||| |#| || || || ||||| || ||||#| . |. |. |#. ||||| |#| || || .# |.....#|....|#.||||.|||##.|#|....||.#||.#. #. .# |.....#|....|#.||||.|||##.|#|....||.#||.#. #. .# |.....#|....|#.||||.|||##.|#|....||.#||.#. #. #.|||||||#############################| ||| .# #.|||||||#############################| ||| .# #.|||||||#############################| ||| .# || ##||#||#||||||#||#||#||#||##. || || ##||#||#||||||#||#||#||#||##. || || ##||#||#||||||#||#||#||#||##. || # .#|||||||||#||#|||||||||||#| # # .#|||||||||#||#|||||||||||#| # # .#|||||||||#||#|||||||||||#| # || |#||||||||||||||||||||||#| || || |#||||||||||||||||||||||#| || || |#||||||||||||||||||||||#| || .# |#||||||||||||||||||||#| #. .# |#||||||||||||||||||||#| #. .# |#||||||||||||||||||||#| #. || |#||||||||||||||||||#| || || |#||||||||||||||||||#| || || |#||||||||||||||||||#| || #. .######|#|#########| .# #. .######|#|#########| .# #. .######|#|#########| .# .#. |#####||||#####| .#. .#. |#####||||#####| .#. .#. |#####||||#####| .#. |# ||########|| #. |# ||########|| #. |# ||########|| #. |# ...... #| |# ...... #| |# ...... #| |#. .#| |#. .#| |#. .#| |#. .#. |#. .#. |#. .#. .#| |#. .#| |#. .#| |#. |#| |#| |#| |#| |#| |#| .|#|. .|#|. .|#|. .|#|. .|#|. .|#|. |##||. .||##| |##||. .||##| |##||. .||##| .||########||. .||########||. .||########||. 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