Market Analysis
The Pinery Is About to Break Out
Parker and Castle Rock have closed in. A flagship King Soopers arrives Q4 2026. And Pinery homes still sell at a $1M+ discount to Castle Pines Village.
Read article →What Actually Happens When You Run Your Address
1
Assessor Record Pull
We query apps.douglas.co.us/assessor for your specific parcel — finished square footage, year built, quality grade, and 2025 assessed value. This takes about 8 seconds and is the same data the county has on file for your home.
2
COMPER Search — the County's Own Database
COMPER (co-douglas-residential.comper.info) is the comparable-sales database the Douglas County Assessor used to value your home in the 2025 reassessment. We run it with your property characteristics: 18-month date window matching the county's base period, 1-mile radius, similar finished square footage. You see exactly what the county saw.
3
Recommendation First — Then Payment
If the COMPER data supports your assessed value, we tell you that immediately and recommend against filing. An appeal you'd likely lose isn't worth your time. If there's a defensible gap, you get the full package: signed-ready petition, 9-comp Excel grid, and filing instructions. The recommendation comes before you pay.
The 2025 Reassessment: Why June 30, 2024 Matters
The county picked a specific date to value every home in Douglas County. That date was a problem for a lot of homeowners.
Colorado law requires the assessor to value all residential property as of a single base date. For the 2025 reassessment — which sets your tax bill for both 2025 and 2026 — that date was June 30, 2024. The assessor then pulled comparable sales from the 18 months ending on that date: January 2023 through June 2024.
June 2024 turned out to be a local high-water mark in several Douglas County sub-markets. Interest rates were elevated, inventory was tight, and the sales that closed in early 2024 were concentrated in a narrow band of motivated buyers. Homeowners in 80109 (Castle Rock/The Meadows), 80130 (Highlands Ranch), and 80134 (Parker) were assessed off that peak. By late 2024 and into 2025, comparable sales in those same neighborhoods trended lower — but the assessor's base date was already locked.
What this means for your appeal: If you're in one of those affected ZIP codes and your home was assessed using comps from the early-2024 spike, there may be a legitimate gap between your assessed value and what the market actually supports today. The COMPER check runs that comparison in real time. See how values vary by neighborhood →
Popular Douglas County Communities
From master-planned suburbs to gated luxury enclaves to genuine rural ranches.
The Pinery
PARKER · 80134
Mature, established Parker community with ponderosa pines, large wooded lots, country club, and direct open-space access. Feels closer to a mountain town than a suburb.
Stonegate
PARKER · 80134
1990s gated and master-planned. Townhomes to large single-family on golf course lots. Mature landscaping and trail system.
Castle Pines Village
CASTLE PINES · 80108
Most exclusive gated community in Douglas County. 24/7 staffed gates, three private golf courses, multi-acre wooded lots.
The Meadows
CASTLE ROCK · 80109
Castle Rock's largest master-planned community — 5,000+ homes from starter ranches to estates. Resident rec center, village center, miles of trails.
Founders Village
CASTLE ROCK · 80104
Established east-side Castle Rock dating to the late 1980s. Tree-lined streets, larger lots than newer subdivisions.
Highlands Ranch
80126 · 80129 · 80130
100,000+ residents, four resident-owned rec centers, top-tier schools, 8,200 acres of community open space. Master-planned at scale.
BackCountry
HIGHLANDS RANCH · 80129
Gated luxury enclave at Highlands Ranch's southwest edge. Private clubhouse, infinity pool, direct open space access.
Heritage Hills
LONE TREE · 80124
Lone Tree's premier luxury subdivision. Gated, custom builds on 1/3–1+ acre lots. Mature landscaping, mountain views.
Perry Park
LARKSPUR · 80118
Mountain-style homes nestled in red-rock formations and ponderosa forest. Golf course community with genuine mountain character.
Castlewood Ranch
CASTLE ROCK · 80104
East Castle Rock with significantly larger lots than newer subdivisions. Buyers seeking elbow room without leaving Castle Rock.
Franktown
80116
Unincorporated rural Douglas County. 5–35 acre lots, custom homes, equestrian properties, Pikes Peak views.
Roxborough Park
80125
Sited along Roxborough State Park's red-rock formations. Homes back directly to public lands. Mature ponderosa, mule deer, unique views.
What Actually Moves Douglas County Home Values
Most homeowners are wrong about what their home is worth. Here's what really shows up in the sales data.
| Factor | Impact | Why It Matters |
|---|---|---|
| Finished square footage | 40% of model weight | Single biggest predictor across all sales — more than location in many Douglas County sub-markets. |
| Finished basement | Best ROI: $250+/sf return on $40–60/sf cost | No other improvement comes close. A 1,000sf basement added for $50K routinely adds $200K+ in a Castle Rock comp analysis. |
| School boundary | 5–10% value swing | One block can matter. The Douglas County line between Highlands Ranch elementary zones has produced measurable value differences on identical floor plans. |
| Backs to open space | 5–20% premium | Cannot be replicated. In communities like BackCountry and Roxborough Park, open-space-backing lots command a persistent premium that doesn't compress even in soft markets. |
| Lot size (past 0.4 acre) | Threshold effect above 0.4 ac | Meaningful in Castle Rock, Franktown, and Larkspur rural communities. In Highlands Ranch and Parker tract subdivisions, lot size above 0.25 ac adds almost nothing. |
| Year built (sweet spots) | Vintage (<1995) or new (>2018) wins | Pre-1995 homes on mature lots command character premiums. 2019+ homes command new-construction premiums. The 2003–2014 bracket is the trough — none of the advantages of either era. |
| Kitchen / bath remodels | ~40% cost recovery | Speeds sale and prevents a price cut, but not a value creator. A $60K kitchen does not add $60K. It prevents the buyer from asking for $25K off. |
| Pool | $0–$15K on an $80K install | Colorado's swim season is roughly 90 days. Pool homes sit longer, buyers discount for maintenance, and the assessor typically values them at less than replacement cost. |
Frequently Asked Questions
Things we'd want you to know before filing.
Is your market value report a licensed appraisal?
No, and we're explicit about it on every page of the report. A USPAP-compliant licensed appraisal is required for mortgage underwriting, divorce or estate court, and tax court proceedings. Our report is suitable for personal financial planning, FSBO pricing, refinance preparation, pre-sale strategy, and informed conversations with your real estate professional. If you need a licensed appraisal, we have a referral form to connect you with vetted Colorado-licensed appraisers.
How accurate is the market value report compared to Zillow?
Our report uses the same comparable-sales database the Douglas County Assessor uses (COMPER), with our methodology fully documented and every comp named. Zillow's Zestimate uses a proprietary national algorithm with no transparency, and Zillow's own published median error rate is ±7.5% for off-market homes. For Douglas County's hyper-local sub-markets, our hyper-local approach produces more defensible numbers. More on this here.
How does the property tax appeal work?
Colorado runs a biennial reassessment cycle. The 2025 reassessment value applies to both the 2025 and 2026 tax years. If you believe your assessment is too high, you can file a Petition for Abatement and Refund with the Douglas County Board of Commissioners. Our package includes the petition (formatted to county requirements), a 9-comp Excel grid showing your indicated value, and a cover letter with filing instructions. You print, sign, and mail. The 2026 abatement filing window opens May 1, 2026.
How long does each report take to deliver?
Appeal package: 3–5 minutes. Market value report: 5–7 minutes. We do all the data pulls (assessor records, comparable sales, photos, mapping) in real-time and email the report straight to your inbox. You can also re-download from the customer portal for 7 days.
What ZIP codes / cities do you cover?
All of Douglas County, Colorado. That includes Castle Rock (80104, 80108, 80109), Castle Pines (80108), Parker (80134, 80138), Lone Tree (80124), Highlands Ranch (80126, 80129, 80130), Larkspur (80118), Franktown (80116), Sedalia (80135), Roxborough Park (80125), and the unincorporated communities of Acres Green, Louviers, and Perry Park.
Why would I appeal my assessment if my home is actually worth more than the assessor says?
You wouldn't, and we'd advise against it. An appeal challenges the assessor's value on the basis that it's too high. If comparable sales actually support a value above the assessment, filing an appeal could prompt the assessor to increase your value rather than decrease it. Our market value report often surfaces exactly this scenario — letting you know not to file. That's part of why ordering the market value report first is sometimes the smarter move.
Where does your data come from?
Subject property details come from the public Douglas County Assessor records (apps.douglas.co.us/assessor). Comparable sales come from the COMPER database (co-douglas-residential.comper.info), which is the same database the assessor uses. Property photos come from the assessor where available, with Google Street View as a fallback. Mapping is via Google Maps Static API. Every source is cited in the report.
What happens after I order?
Stripe processes the payment, our pipeline generates your report (3–7 minutes), and we email it to the address you provided. You also get login credentials to a customer portal where you can re-download your files for 7 days. If anything goes wrong with the automated pipeline, we'll reach out to follow up — and you're covered by a re-run guarantee.
Who is behind DougCO Real Estate?
DougCO Real Estate is a service of AAERO LLC, a Colorado-registered company. We are not a real estate brokerage, a licensed appraisal service, or affiliated with Douglas County government. The product was built by Douglas County residents who went through the appeal process themselves, found that the COMPER data did most of the work, and automated the parts that didn't require professional judgment. We've seen the same assessor error patterns show up across The Meadows, Highlands Ranch, and Parker — the system we built is designed to find them quickly and cheaply.
From the Blog
Real estate, written straight. Source-cited. No formulaic AI fluff.
Neighborhoods
Pinery vs. Castle Pines vs. Highlands Ranch
Three of the most-searched Douglas County communities. Three completely different lifestyles. Real per-square-foot ranges.
Read article →
Pre-Sale Strategy
How to Get Your Home Ready to Sell
Sellers over-invest in the wrong things. Here's what actually shows up in the comps — and what to do first.
Read article →Methodology
The Truth About Your Zillow Zestimate
It's wrong. Maybe by $20K. Maybe by $150K. Here's why a national algorithm trips on Douglas County's micro-markets.
Read article →