


3128 Diamond Avenue, Allentown, PA 18103
Listing Courtesy of Christian Saunders Real Estate
1 active listing · 10 sold since 2020
1
For Sale
$258K
Median Sale Price
7
Median Days on Market
105.3%
Sold-to-List
$192
Price / Sq Ft
| Year | Median Sale Price | Homes Sold |
|---|---|---|
| 2025 | $299K | 2 |
| 2024 | $255K | 1 |
| 2022 | $275K | 5 |
| 2021 | $205K | 1 |
| 2020 | $172K | 1 |
At the current trend, the median is modeled to reach about $320K in 2026 (estimate).
At today's ~6.75% 30-year rate, the median $258K home in Alton Park, Allentown, PA runs about $1,679/mo with 20% down (principal & interest plus estimated taxes and insurance).
Estimate only — not a loan offer. Actual rate and payment depend on your profile.
Most active agents by closed sales here over the past 18 months.
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There is 1 home currently for sale in Alton Park, Allentown, PA.
The median sale price in Alton Park, Allentown, PA is $258K, based on 10 sales since 2020 (ranging from $187K to $342K).
Homes in Alton Park, Allentown, PA typically go under contract in about 7 days on market (median).
Over the past 12 months, homes in Alton Park, Allentown, PA sold for an average of 105.3% of list price — at or above asking.
Homes in Alton Park, Allentown, PA have sold for a median of $192 per square foot since 2020.
The median sale price in Alton Park, Allentown, PA has risen from $172K in 2020 to $299K in 2025. At the current trend, the median is on track for roughly $320K in 2026 (modeled estimate).
The most active agents in Alton Park, Allentown, PA over the past 18 months are: Robyn J Pottorff (Berkshire Hathaway HomeServices Homesale Realty) — 1 sale; Robert Mccann (Assist 2 Sell Buyers & Sellers Realty, LLC) — 1 sale.