399 May Ave, Lyons, CO 80540
OFF MARKET

399 May Ave
Lyons, CO 80540

  • 3 Beds
  • 2 Baths
  • 2,792 sqft (on 2 acres)

$749,700

Trulia Estimate
as of May 17, 2026
Est. Refi. Payment $4,175/mo*

$749,700

Trulia Estimate
as of May 17, 2026
Est. Refi. Payment $4,175/mo*
3 Beds
2 Baths
2,792 sqft
(on 2 acres)

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

River frontage,South exposure/Solar forced air heat & Hot water baseboard, 4 horses ok. 20x15 trex deck has wonderful mountain views. Easy access all seasons. 60 miles of Hiking/biking trails in surrounding National Forest. Main floor master suite, lower level family room with fireplace. Trail to river, rock outcrops, pine trees and storage shed in back yard. Full sized RV parking. New flooring. Set showings before 6 PM on day BEFORE showing. Seller works nights & is sleeping during the day.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
Garage
Outdoor
No Info
A/C
Heating only
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 399 May Ave

Interior Features

Interior Details
BasementNumber of Rooms: 8
Heating & Cooling
Heating: BaseboardHeating Fuel: Baseboard
Levels, Entrance, & Accessibility
Stories: 1Floors: Other
Appliances & Utilities
DishwasherDryerMicrowaveRefrigeratorWasher
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: CompositionExterior: OtherFoundation Type: Concrete
Parking & Garage
GarageParking Space: 1Parking: Garage Attached

Property Information

Year Built
Year Built: 1972Year Updated: 1987
Property Type / Style
Property Type: Single Family HomeArchitecture: Ranch / Rambler

Community

Units in Building: 1

Lot Information

Lot Area: 2.00 acres

Price History for 399 May Ave

DatePriceEventSource
08/16/2019$450,000Sold
IRES as distributed by MLS GRID #867947
07/24/2019$459,000PendingAgent Provided
07/17/2019$459,000PriceChange
Agent Provided
06/20/2019$489,000PriceChange
Agent Provided
06/13/2019$498,000PriceChange
Agent Provided
04/07/2019$499,000PriceChange
Agent Provided
12/06/2018$525,000Listed For SaleAgent Provided
09/18/2009$282,000Sold
N/A
05/11/2009$329,000ListingRemovedAgent Provided
03/14/2009$329,000PriceChange
Agent Provided
11/28/2008$349,000Listed For SaleAgent Provided
03/01/2005$267,500Sold
N/A
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Property Tax and Assessment

Year2024
Tax$4,711
Assessment$793,000
Home facts updated by county records

Comparable Sales for 399 May Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.17
Single-Family Home
$895,000
05/30/25
3
2.5
2,197
0.52
Single-Family Home
$620,000
09/12/25
3
2
3,080
0.66
Single-Family Home
$576,000
01/30/26
3
2.5
2,244
0.56
Single-Family Home
$1,010,000
03/27/26
3
3
3,036
0.48
Single-Family Home
$357,158
10/06/25
3
2
1,248
0.50
Single-Family Home
$990,000
12/09/25
3
2.5
2,292
0.68
Single-Family Home
$710,000
01/09/26
3
2.5
2,572
0.67
Single-Family Home
$545,000
01/08/26
3
2
1,890
0.94
Single-Family Home
$564,000
03/16/26
3
2
2,064
0.88
Single-Family Home
$785,000
03/02/26
3
2.5
3,091

Assigned Schools

These are the assigned schools for 399 May Ave.
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Lyons

At least 12 Trulia users voted on each feature.
  • 100 % Say parking is easy

  • 93 % Say it's dog friendly

  • 90 % Say people would walk alone at night

  • 89 % Say it's quiet

  • 83 % Say it's walkable to restaurants

  • 79 % Say there's holiday spirit

  • 78 % Say there's wildlife

  • 77 % Say neighbors are friendly

  • 76 % Say yards are well-kept

  • 76 % Say they plan to stay for at least 5 years

  • 68 % Say car is needed

  • 65 % Say kids play outside

  • 58 % Say there are community events

  • 52 % Say it's walkable to grocery stores

  • 44 % Say there are sidewalks

  • 35 % Say streets are well-lit

Learn more about our methodology.
  • Corina Miller
    "People walk their dogs here. It seems like a fine place to walk. It’s also important to be wary of the wildlife. The dog often gets excited to chase deer in the neighborhood. "
  • Dave.wehrs
    "Great mix of folks. Fabulous location; close to Boulder and Longmont, 22 miles to Estes Park. Great access to mountains but many close parks and trails too in Hall, Heil, Rabbit Mtn, and the Longmont Dam/Price Reservoir. "
  • Cwelch1956
    "It gives me a lifestyle of personal privacy, embedded in natural beauty, in a small community with ample restaurants and musical venues. Not to mention a culture of health minded residents."
  • ms m.
    "I live in this area and it is sometimes shocking how beautiful and serene it is. Surrounded by national forests and trails, you can find stunning rock outcroppings, smooth rock rivers and fields of wild flowers. The community is respectful of privacy but extremely helpful if needed-- as witnessed in the floods. Lyons is a close 10 miles away with a vibrant art and music community and delicious restaurants. Estes park is about 15 minutes away, which is where Rocky Mountain National Park is. There is a ton of wildlife too. Definitely a slice of heaven. "
  • Steve N.
    "This is a friendly, spacious and laid back area two miles outside Lyons town limits, with large lots and privacy, yet only a half an hour from Boulder, and twenty-five minutes to Longmont."
  • Pt
    "Ride 20 or more miles of amazing singletrack and then hit Oskar Blues for great food and beer (and maybe a show). Or just hang by the river and read a book while tubers float by. Plenty to do in Lyons, lots of friendly folks, and a mellow atmosphere make it a great place to live. "

LGBTQ Local Legal Protections

Apartments for Rent

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Homes for sale near 399 May Ave

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Homes for rent near 399 May Ave

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Off Market Homes Near 399 May Ave

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399 May Ave, Lyons, CO 80540 is a 3 bedroom, 2 bathroom, 2,792 sqft single-family home built in 1972. This property is not currently available for sale. 399 May Ave was last sold on Aug 16, 2019 for $450,000. The current Trulia Estimate for 399 May Ave is $749,700.