Property listing for 8320 W 66th Ave, Arvada, CO 80004
ActiveSingle Family Home with ADU

$2,650,000

8320 W 66th Ave, Arvada, CO 80004

Reimagined 5-Bed Home + Finished ADU on 0.67 Acre, Minutes to Olde Town

5 Bed · 3.5 Bath · 5,173 Sq Ft

Turnkey luxury living with income-ready ADU and mountain views

5

Beds

3.5

Baths

5,173

Sq Ft

1983

Built

0.67 acres

Lot

4 garage spaces total (includes 2-car garage in ADU); gated driveway and RV pad

Garage

About 8320 W 66th Ave

This is a rare Arvada offering: a high-caliber, from-the-studs reimagining on two combined parcels totaling just over 29,000 SF — all within minutes of Olde Town Arvada. The main residence (approx. 5,173 SF) balances contemporary finishes with thoughtful livability: a waterfall-edge quartzite island anchors a chef-ready kitchen with a six-burner gas range, double ovens, KitchenAid refrigeration and integrated Avallon beverage fridge. Multiple living areas frame a tiled fireplace and open through panoramic doors to an expansive deck with sweeping city and mountain views.

The primary suite is a private wing behind a custom feature wall, complete with a fireplace, intimate seating area, private balcony and a spa-like ensuite offering dual vanities, steam shower, soaking tub and LED-lit vanity plus an ample walk-in closet. Two additional bedrooms on the main level share a well-appointed bath; the lower level expands living with a rec room and wet bar, two more bedrooms, a full bath and convenient laundry.

A fully finished ADU on the property elevates flexibility and income potential: panoramic doors, a dedicated wet bar, gym/studio space, a 3/4 bath, and a two-car garage create an attractive rental or long-term guest suite. Parking is abundant — four garage spaces reported (including ADU garage), gated driveway, tandem concrete pad and dedicated RV parking.

Outside, irrigated landscaped greenspace and a covered patio beneath a KE retractable pergola deliver low-maintenance entertaining options and year-round enjoyment. Located steps from Olde Town’s shops, restaurants and the G-Line light rail, this property blends privacy, scale and immediate access to regional trails and commuter routes. Finished to an elevated standard and sited on an unusually large lot for the area, this home is a standout opportunity for buyers seeking turnkey luxury and optional income generation.

Home Highlights

Fully reimagined main home from studs — premium finishes throughoutFinished ADU with 2-car garage, wet bar and gym/studio — strong income potentialLarge combined parcel (~29,185 SF) — rarely available near Olde TownExpansive decks with mountain/city views and retractable pergolaAbundant parking including RV pad and gated driveway

Property Features

Interior Features

  • 5 bedrooms, 3.5 baths across ~5,173 SF
  • Primary suite with fireplace, private balcony and steam shower
  • Chef's kitchen: waterfall-edge quartzite island, six-burner gas range, double ovens
  • Built-in storage, dual fireplaces, wet bar on lower level
  • Finished lower level rec room and in-unit laundry

Exterior & Lot

  • Two combined parcels totaling 29,185 SF (approx. 0.67 acres)
  • Expansive deck with city and mountain views
  • Irrigated landscaped yard and patio beneath KE retractable pergola
  • Gated driveway, dedicated RV space and additional parking pads
  • 4 reported garage spaces (includes 2-car ADU garage)

Location & Neighborhood

  • Approximately 0.5–1.0 mile to Olde Town Arvada dining, shops and events
  • Easy access to Wadsworth Blvd and regional commuter routes
  • Close to G-Line light rail for direct access to Denver
  • Neighborhood character: mature lots, upgraded rehabs and close-in suburban convenience

Walkability & Recreation

  • Walkability Rating: 68/100
  • Nearby parks, regional trails and the Clear Creek corridor
  • Quick access to regional trailheads and mountain drives

Neighborhood & Location

This property sits in West Arvada within easy walking or short driving distance to Olde Town Arvada. The neighborhood mixes mature residential lots, upgraded period homes, and infill builds. Residents value proximity to independent restaurants and shops, frequent community events, and strong trail and park access. Commuter routes and the G-Line light rail provide straightforward access into Denver and the foothills.

Market Insights

Homes in the Olde Town Arvada corridor continue to outperform broader suburban averages due to walkable amenities and light-rail access. The market for premium, renovated single-family homes with detached or attached ADUs remains competitive; inventory for large-lot, high-finish homes is limited. Expect buyer interest from both local move-up buyers and Denver commuters seeking more outside space. Median sales in desirable Arvada pockets have shown modest annual appreciation (~3–6% range recently) while five-year appreciation remains healthy. For an asset of this scale, the ADU and mountain-view deck justify a premium to typical single-family comparables — verify comparable sales during offer preparation to support pricing and appraisal outcomes.

Nearby Schools

Jefferson County Public Schools (Jeffco)

District · varies

N/A

Walkability & Recreation

68
Walkability
78
Recreation

Close access to neighborhood parks, regional trails and Clear Creek corridor; excellent for outdoor recreation and short drives to mountain trailheads.

Investment Highlights

  • Finished ADU with separate 2-car garage — strong rental or multi-gen potential
  • Large combined parcel (~29,185 SF / 0.67 acres) provides privacy and future expansion options
  • Full high-end renovation (main home rebuilt from studs) with luxury kitchen and spa primary suite
  • Panoramic doors, decks, and mountain/city views enhance premium value
  • Robust parking: 4 garage spaces + gated driveway + RV pad — rare for Olde Town proximity

Key Findings

  • Main home: ~5,173 SF, 5 beds, 3.5 baths, built 1983 (fully reimagined)
  • Lot: combined parcels totaling 29,185 SF (reported irrigated, sloped)
  • List price: $2,650,000 (approx. $512/SF)
  • Finished ADU includes gym/studio, wet bar, 3/4 bath and two-car garage
  • Close to Olde Town Arvada and G-Line light rail — strong locational appeal

Things to Consider

  • Confirm permitted status and history of the ADU and any work done when main house was rebuilt
  • Uncommon property configuration (two parcels with combined improvements) may complicate appraisal and financing — verify title and parcel records
  • Unique features (large lot, ADU) reduce number of direct comparable sales — appraisal risk

Opportunity Analysis

Purchase a premium, turnkey, highly upgraded single-family property with a finished ADU in a rare large-lot setting near Olde Town Arvada. Capture value through rental income from the ADU, preserve upside from continued Denver-area appreciation, and leverage the property's flexibility for multi-generational use or short-term / long-term leasing (subject to local rules).

Potential Use Scenarios

  • Confirm ADU permits and utility metering prior to closing; if not permitted, plan scope/cost to bring to code.
  • Use list price as negotiation anchor; present comparable renovated sales and income pro forma for ADU to justify offer.
  • Consider conservative rental underwriting (10K/month estimate) and secure lease strategy if buyer intends to rent ADU.

Risk Factors

  • Permit/entitlement risk for ADU or upgrades
  • Liquidity risk — niche product may take longer to re-sell to the narrow buyer pool seeking large lots + ADU near Olde Town
  • Appraisal risk due to limited true comparables

Buyers should conduct independent due diligence before making any purchase decisions.

AI Valuation Estimate

Low

$2400K

Midpoint

$2650K

High

$2900K

$512/SF estimated price per square foot

70% confidence

Estimate anchored to the current list price ($2,650,000) and informed by the large lot (~29,185 SF), full renovation, finished ADU, and typical price bands for high-end renovated single-family homes with ADUs near Olde Town Arvada. No live comps search performed; local market variability may adjust value.

As of 2026-03-14

This is a computer-generated estimate for informational purposes only and is not an appraisal or professional valuation.

Market & Area Data

Market Trends

Avg Days on Market30 days
Inventory2.5 months
1-Year Appreciation+400.0%

Demographics

Median Income (1 mi)$95,000

Arvada has seen steady demand from buyers priced out of central Denver; desirable pockets near Olde Town command premium pricing.

Nearby Points of Interest

  • Olde Town Arvada (0.5–1.0 mi)
  • Wadsworth Boulevard retail corridor (1.0 mi)

Minutes to Olde Town Arvada dining and shops, regional trails, light rail (G-Line) in Olde Town, quick access to I-70 and Denver; proximity provides both suburban privacy and urban convenience.

School District

DistrictJefferson County Public Schools (Jeffco)
ElementaryNearby schools served by Jefferson County Public Schools (possible assignments include several neighborhood elementaries; verify with Jeffco enrollment by address)
MiddlePotentially Drake Middle / Oberon Middle or other Jeffco middle schools (verify assignment)
HighPossible high schools: Ralston Valley High School (noted as high-rated in the area) or Arvada West High School (verify by address)

Market data is based on aggregated public records and may not reflect real-time conditions.

Property Details

Building Details

Year Built1983
Constructionwood frame (likely) with modernized finishes
Stories1.5
Basementpartial finished
FireplaceYes
Conditionexcellent

Lot & Site

Lot Size0.67 acres (29,185 SF)
Topographysloping
Parkingattached_garage_and_driveway
Parking Spaces6

Utilities

WaterPublic
SewerPublic Sewer

Zoning & Land Use

DescriptionLikely single-family residential zoning (R-1 or comparable); property contains two combined parcels and an ADU—verify with city planning.
JurisdictionCity of Arvada / Jefferson County

Allowed Uses

Single family residentialAccessory dwelling unit (existing on site)Home office/residential accessory uses (subject to local code)
Current Useresidential

Tax & Sale History

Tax Assessment

Sale History

2020-04-03$960,000
2019-07-16$665,000
2016-05-16$449,500

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