Highest Remediation Burden: Colorado — 2026

Out of 154 ZIP codes with data in Colorado, these are the areas where estimated safety remediation costs represent the largest share of median home value. See also: National Rankings | All Colorado Rankings

Statistic	Value
ZIP codes ranked	154
Highest burden	0.6% of median home value
Median burden	0.1% of median home value
Median estimated cost	$500
State	Colorado

Top 100 Highest Remediation Burden ZIP Codes

Rank	ZIP Code	City	State	Est. Cost	Median Home Value	Burden %
1	80521	Fort Collins	CO	$3,480	$541,300	0.6%
2	80526	Fort Collins	CO	$2,700	$520,500	0.5%
3	81058	Manzanola	CO	$600	$123,000	0.5%
4	80260	Denver	CO	$800	$188,200	0.4%
5	81067	Rocky Ford	CO	$500	$139,100	0.4%
6	81039	Fowler	CO	$600	$175,900	0.3%
7	81004	Pueblo	CO	$600	$181,200	0.3%
8	81050	La Junta	CO	$600	$181,500	0.3%
9	81052	Lamar	CO	$500	$150,400	0.3%
10	81089	Walsenburg	CO	$600	$180,800	0.3%
11	81001	Pueblo	CO	$600	$208,400	0.3%
12	81101	Alamosa	CO	$600	$216,900	0.3%
13	80911	Colorado Springs	CO	$900	$348,900	0.3%
14	81019	Colorado City	CO	$600	$229,000	0.3%
15	80537	Loveland	CO	$1,100	$460,100	0.2%
16	80817	Fountain	CO	$900	$377,300	0.2%
17	81054	Las Animas	CO	$300	$124,200	0.2%
18	80538	Loveland	CO	$1,100	$472,200	0.2%
19	80910	Colorado Springs	CO	$600	$276,900	0.2%
20	80543	Milliken	CO	$800	$403,600	0.2%
21	80906	Colorado Springs	CO	$1,100	$543,400	0.2%
22	80601	Brighton	CO	$900	$471,900	0.2%
23	80602	Brighton	CO	$1,200	$639,300	0.2%
24	80640	Henderson	CO	$900	$464,400	0.2%
25	81006	Pueblo	CO	$600	$317,200	0.2%
26	80110	Englewood	CO	$800	$455,600	0.2%
27	80603	Brighton	CO	$800	$448,700	0.2%
28	81413	Cedaredge	CO	$600	$329,300	0.2%
29	81416	Delta	CO	$500	$282,500	0.2%
30	80465	Morrison	CO	$1,100	$628,800	0.2%
31	81003	Pueblo	CO	$300	$178,600	0.2%
32	81023	Beulah	CO	$600	$352,700	0.2%
33	81069	Rye	CO	$600	$347,300	0.2%
34	81419	Hotchkiss	CO	$600	$352,700	0.2%
35	80132	Monument	CO	$1,100	$700,900	0.2%
36	80534	Johnstown	CO	$800	$509,500	0.2%
37	80816	Florissant	CO	$600	$382,300	0.2%
38	81428	Paonia	CO	$600	$371,400	0.2%
39	81435	Telluride	CO	$1,100	$706,100	0.2%
40	80401	Golden	CO	$1,100	$748,800	0.1%
41	80550	Windsor	CO	$800	$538,900	0.1%
42	80915	Colorado Springs	CO	$500	$328,200	0.1%
43	81401	Montrose	CO	$500	$343,000	0.1%
44	80011	Aurora	CO	$500	$367,200	0.1%
45	80513	Berthoud	CO	$800	$558,100	0.1%
46	80621	Fort Lupton	CO	$600	$425,900	0.1%
47	80814	Divide	CO	$600	$432,500	0.1%
48	80903	Colorado Springs	CO	$600	$420,000	0.1%
49	80925	Colorado Springs	CO	$600	$441,100	0.1%
50	80928	Colorado Springs	CO	$500	$355,000	0.1%
51	80010	Aurora	CO	$500	$385,700	0.1%
52	80012	Aurora	CO	$500	$398,300	0.1%
53	80014	Aurora	CO	$500	$386,500	0.1%
54	80017	Aurora	CO	$500	$383,700	0.1%
55	80120	Littleton	CO	$800	$596,400	0.1%
56	80133	Palmer Lake	CO	$600	$452,500	0.1%
57	80228	Denver	CO	$800	$607,300	0.1%
58	80229	Denver	CO	$500	$382,900	0.1%
59	80827	Lake George	CO	$600	$447,500	0.1%
60	80951	Colorado Springs	CO	$500	$384,200	0.1%
61	80138	Parker	CO	$800	$679,800	0.1%
62	80863	Woodland Park	CO	$600	$503,400	0.1%
63	80922	Colorado Springs	CO	$500	$407,000	0.1%
64	81226	Florence	CO	$300	$240,700	0.1%
65	80013	Aurora	CO	$500	$453,700	0.1%
66	80020	Broomfield	CO	$600	$570,100	0.1%
67	80022	Commerce City	CO	$500	$448,400	0.1%
68	80113	Englewood	CO	$800	$699,600	0.1%
69	80221	Denver	CO	$500	$449,700	0.1%
70	80233	Denver	CO	$500	$441,300	0.1%
71	80498	Silverthorne	CO	$800	$721,700	0.1%
72	80651	Platteville	CO	$500	$438,000	0.1%
73	81005	Pueblo	CO	$300	$282,100	0.1%
74	81008	Pueblo	CO	$300	$280,400	0.1%
75	81240	Penrose	CO	$300	$282,300	0.1%
76	80023	Broomfield	CO	$800	$820,900	0.1%
77	80102	Bennett	CO	$500	$491,200	0.1%
78	80241	Thornton	CO	$500	$502,300	0.1%
79	80435	Dillon	CO	$900	$882,100	0.1%
80	80470	Pine	CO	$600	$630,900	0.1%
81	80631	Greeley	CO	$300	$300,400	0.1%
82	80926	Colorado Springs	CO	$600	$579,100	0.1%
83	81212	Canon City	CO	$300	$286,300	0.1%
84	81230	Gunnison	CO	$500	$495,200	0.1%
85	81253	Wetmore	CO	$300	$288,600	0.1%
86	81403	Montrose	CO	$500	$481,900	0.1%
87	80015	Aurora	CO	$500	$558,900	0.1%
88	80018	Aurora	CO	$500	$558,800	0.1%
89	80019	Aurora	CO	$500	$529,300	0.1%
90	80026	Lafayette	CO	$600	$664,000	0.1%
91	80104	Castle Rock	CO	$500	$586,800	0.1%
92	80127	Littleton	CO	$600	$663,900	0.1%
93	80433	Conifer	CO	$600	$697,700	0.1%
94	80482	Winter Park	CO	$500	$562,500	0.1%
95	80504	Longmont	CO	$500	$556,500	0.1%
96	80517	Estes Park	CO	$600	$670,200	0.1%
97	80921	Colorado Springs	CO	$600	$647,600	0.1%
98	81434	Somerset	CO	$600	$638,200	0.1%
99	80109	Castle Rock	CO	$500	$648,900	0.1%
100	80112	Englewood	CO	$500	$627,500	0.1%

Methodology

The remediation burden ratio is calculated as: estimated remediation cost / median home value. Remediation costs are the sum of applicable safety measures for each ZIP code based on EPA, FEMA, and state data:

Lead service line replacement — where lead exposure risk is elevated (based on housing age, water system data, and EPA sampling)
Radon home test - EPA zones are county-level potential categories, not home measurements; mitigation belongs only after a measured result
Whole-home water filtration — where contaminant levels exceed EPA guidelines
Flood insurance — in FEMA-designated flood zones with claim history
PFAS treatment — where PFAS detections have been reported

Median home values are from U.S. Census American Community Survey (ACS) estimates. Cost estimates use national average ranges from EPA, HUD, and industry data. Individual home costs may vary significantly based on specific conditions.

Last updated: 2026-08-31.

Frequently Asked Questions

What does "remediation cost relative to home value" mean?

This ratio compares the estimated cost of supported actions (lead pipes, a property-specific radon test, water filtration, and current flood-map verification) to the median home value in that ZIP code. County radon zones never add a mitigation-system cost.

How are remediation costs estimated?

Costs use published benchmarks for supported actions such as lead service line replacement, a property-specific radon test, and water filtration. A county radon zone does not trigger a mitigation-system estimate, and historical FEMA claims do not set an insurance premium.

Why does this matter for homebuyers?

In areas with high remediation burden, the cost of making a home safe can represent a large portion of the home's value. This is especially impactful in lower-value housing markets where a $15,000 remediation bill represents 10-30% of the home price. Standard home inspections may not identify all these issues.

Does a high ratio mean the home is unsafe?

Not necessarily. The ratio reflects potential costs based on area-level environmental data — not every home in the ZIP code will need all remediation work. However, it indicates elevated risk factors that buyers should investigate before purchasing.