# 21 First Avenue, Haddam, CT 06441 > **TL;DR:** 4bd/3ba single family, $599,900 ($255/sqft), built 1986, 2,352 sqft. > Fireplace, A/C, 2-car garage. Est. $3,508/mo. Listed 12 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $599,900 | | Price/sqft | $255 | | Bedrooms | 4 | | Bathrooms | 2 full, 1 half | | Square Feet | 2,352 | | Year Built | 1986 | | Lot Size | 87,120 sqft (2.00 acres) | | Garage | 2-car | | Property Type | Single Family (Other) | | Status | Active | | Days on Market | 12 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $3,033 | | Estimated Insurance | $175 | | HOA | $300 | | **Total** | **$3,508** | ## Nearby Schools - **Elementary:** Per Board of Ed - **High:** Haddam-Killingworth ## Key Amenities - Fireplace - A/C - 2-car garage ## Property Highlights - Built in 1986 - 2.00 acre lot - Fireplace ## Description ### Agent Description So much POTENTIAL here .. Over 2 acres steps to Hidden Lake Association! 2400+ square ft home offering 4 bedrooms and 2-1/2 baths along with an oversized detached 2 car garage with finished space above perfect for in-home office, studio or in-law apartment! The open kitchen and dining areas are spacious with lots of windows to let the light indoors; large living room with fireplace; a separate family room just off the kitchen. On the second floor you'll find 4 bedrooms - the primary en-suite bedroom offers cathedral ceiling, a spiral stairway to a loft area! Accessible here are two separate SPACIOUS attic areas. In addition to the above, you will find a separate oversized two-car garage with an in-law suite and large deck on the second level perfect for family stay-overs, in-home office, etc. A lot of house, property and extra living quarters on a huge 2 acre lot -- TLC and elbow grease needed -- bring your plans, paint, tools to make this property your dream home -- STEPS TO HIDDEN LAKE! Perfect property for gardens, etc. Washer/Dryer and dining room hanging light excluded from sale. All floor plans included in attachments. Please give at least 24 hours notice as there are pets on premises. ## Location - **Address:** 21 First Avenue, Haddam, CT 06441 - **County:** Middlesex - **Coordinates:** 41.421163, -72.565587 - **Google Maps:** https://www.google.com/maps?q=41.421163,-72.565587 ## Listing Agent - **Name:** Lisa Genovali - **Brokerage:** RE/MAX VALLEY SHORE - **Broker Phone:** (860) 388-1228 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/21-1st-Ave_Higganum_CT_06441_M47272-53879?f=listhub&s=CTMLS&m=24214035&c=propsimple) ## Photos ![21 First Avenue - Photo 1](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1123868067r.jpg) ![21 First Avenue - Photo 2](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f568890463r.jpg) ![21 First Avenue - Photo 3](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4071700608r.jpg) ![21 First Avenue - Photo 4](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f298569170r.jpg) ![21 First Avenue - Photo 5](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1573555413r.jpg) ![21 First Avenue - Photo 6](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1986962564r.jpg) ![21 First Avenue - Photo 7](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2376753187r.jpg) ![21 First Avenue - Photo 8](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3967902793r.jpg) ![21 First Avenue - Photo 9](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1756104248r.jpg) ![21 First Avenue - Photo 10](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3880036312r.jpg) ![21 First Avenue - Photo 11](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1397330505r.jpg) ![21 First Avenue - Photo 12](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4261858549r.jpg) ![21 First Avenue - Photo 13](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f538511348r.jpg) ![21 First Avenue - Photo 14](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2448496093r.jpg) ![21 First Avenue - Photo 15](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3618861173r.jpg) ![21 First Avenue - Photo 16](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1061526721r.jpg) ![21 First Avenue - Photo 17](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1427928102r.jpg) ![21 First Avenue - Photo 18](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2382296239r.jpg) ![21 First Avenue - Photo 19](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2271402200r.jpg) ![21 First Avenue - Photo 20](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2513207226r.jpg) ![21 First Avenue - Photo 21](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3328424813r.jpg) ![21 First Avenue - Photo 22](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2462549000r.jpg) ![21 First Avenue - Photo 23](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3016234214r.jpg) ![21 First Avenue - Photo 24](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3215273483r.jpg) ![21 First Avenue - Photo 25](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f902876945r.jpg) ![21 First Avenue - Photo 26](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1405792477r.jpg) ![21 First Avenue - Photo 27](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f777560068r.jpg) ![21 First Avenue - Photo 28](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f251764711r.jpg) ![21 First Avenue - Photo 29](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f937221501r.jpg) ![21 First Avenue - Photo 30](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2675993708r.jpg) ![21 First Avenue - Photo 31](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f808052891r.jpg) ![21 First Avenue - Photo 32](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2725147202r.jpg) ![21 First Avenue - Photo 33](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4219607318r.jpg) ![21 First Avenue - Photo 34](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2425211142r.jpg) ![21 First Avenue - Photo 35](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3611090774r.jpg) ![21 First Avenue - Photo 36](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4240067425r.jpg) ![21 First Avenue - Photo 37](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f539080048r.jpg) ![21 First Avenue - Photo 38](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f204717804r.jpg) ![21 First Avenue - Photo 39](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1695851523r.jpg) ![21 First Avenue - Photo 40](http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3015958076r.jpg) --- **MLS#:** 24214035 | **Updated:** 2026-10-26 **Source:** listhub *Copyright © 2026 SmartMLS, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.* [View on PropertySimple](https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#listing", "url": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9", "name": "21 First Avenue, Haddam, CT 06441", "description": "So much POTENTIAL here .. Over 2 acres steps to Hidden Lake Association! 2400+ square ft home offering 4 bedrooms and 2-1/2 baths along with an oversized detached 2 car garage with finished space above perfect for in-home office, studio or in-law apartment! The open kitchen and dining areas are spacious with lots of windows to let the light indoors; large living room with fireplace; a separate family room just off the kitchen. On the second floor you'll find 4 bedrooms - the primary en-suite bedroom offers cathedral ceiling, a spiral stairway to a loft area! Accessible here are two separate SPACIOUS attic areas. In addition to the above, you will find a separate oversized two-car garage with an in-law suite and large deck on the second level perfect for family stay-overs, in-home office, etc. A lot of house, property and extra living quarters on a huge 2 acre lot -- TLC and elbow grease needed -- bring your plans, paint, tools to make this property your dream home -- STEPS TO HIDDEN LAKE! Perfect property for gardens, etc. Washer/Dryer and dining room hanging light excluded from sale. All floor plans included in attachments. Please give at least 24 hours notice as there are pets on premises.", "image": [ "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1123868067r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f568890463r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4071700608r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f298569170r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1573555413r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1986962564r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2376753187r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3967902793r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1756104248r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3880036312r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1397330505r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4261858549r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f538511348r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2448496093r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3618861173r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1061526721r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1427928102r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2382296239r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2271402200r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2513207226r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3328424813r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2462549000r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3016234214r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3215273483r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f902876945r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1405792477r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f777560068r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f251764711r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f937221501r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2675993708r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f808052891r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2725147202r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4219607318r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2425211142r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3611090774r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4240067425r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f539080048r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f204717804r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1695851523r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3015958076r.jpg" ], "primaryImageOfPage": { "@type": "ImageObject", "url": "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1123868067r.jpg", "caption": "21 First Avenue - Haddam, CT" }, "datePosted": "2026-10-17", "dateModified": "2026-10-26T16:22:12.406Z", "mainEntity": { "@type": "Accommodation", "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#property", "name": "21 First Avenue, Haddam, CT 06441", "address": { "@type": "PostalAddress", "streetAddress": "21 First Avenue", "addressLocality": "Haddam", "addressRegion": "CT", "postalCode": "06441", "addressCountry": "US" }, "geo": { "@type": "GeoCoordinates", "latitude": 41.421163, "longitude": -72.565587 }, "image": [ "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1123868067r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f568890463r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4071700608r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f298569170r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1573555413r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1986962564r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2376753187r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3967902793r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1756104248r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3880036312r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1397330505r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4261858549r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f538511348r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2448496093r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3618861173r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1061526721r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1427928102r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2382296239r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2271402200r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2513207226r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3328424813r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2462549000r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3016234214r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3215273483r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f902876945r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1405792477r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f777560068r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f251764711r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f937221501r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2675993708r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f808052891r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2725147202r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4219607318r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f2425211142r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3611090774r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f4240067425r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f539080048r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f204717804r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f1695851523r.jpg", "http://lh.rdcpix.com/b91c6b95f40783ed242646ce40cb2081l-f3015958076r.jpg" ], "identifier": { "@type": "PropertyValue", "propertyID": "MLS", "value": "24214035" }, "accommodationCategory": "Other", "numberOfBedrooms": 4, "numberOfBathroomsTotal": 3, "numberOfFullBathrooms": 2, "numberOfPartialBathrooms": 1, "floorSize": { "@type": "QuantitativeValue", "value": 2352, "unitCode": "FTK", "unitText": "square feet" }, "yearBuilt": 1986, "amenityFeature": [ { "@type": "LocationFeatureSpecification", "name": "Cooling", "value": "Central Air" }, { "@type": "LocationFeatureSpecification", "name": "Appliances", "value": "Electric Range, Refrigerator, Dishwasher" }, { "@type": "LocationFeatureSpecification", "name": "Fireplace", "value": true }, { "@type": "LocationFeatureSpecification", "name": "Air Conditioning", "value": true } ], "additionalProperty": [ { "@type": "PropertyValue", "name": "Lot Size", "value": "2.00 acres" }, { "@type": "PropertyValue", "name": "Garage Spaces", "value": 2 }, { "@type": "PropertyValue", "name": "Property Subtype", "value": "Other" } ] }, "offers": { "@type": "Offer", "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#offer", "url": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9", "price": 599900, "priceCurrency": "USD", "businessFunction": "http://purl.org/goodrelations/v1#Sell", "availability": "https://schema.org/InStock", "seller": { "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#agent" } }, "provider": { "@type": "Person", "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#agent", "name": "Lisa Genovali", "worksFor": { "@type": "Organization", "@id": "https://www.propertysimple.ai/listing/21-first-avenue-haddam-ct-06441-9e33109d2e30416d985c856dd3e15ac9#brokerage", "name": "RE/MAX VALLEY SHORE", "telephone": "(860) 388-1228", "logo": { "@type": "ImageObject", "url": "http://lh.rdcpix.com/99fbebb1894911e5b1af02357fac1deck-c342792728r.png" } } } } ```