A buyer walks into a 1966 ranch on a quiet street in Green Mountain. The inspector spends three hours in the crawl space, on the roof, and behind the electrical panel, then hands over a sixty-page report with photos of a cracked driveway slab and a water heater nearing the end of its rated life. Nothing on those pages mentions what's happening forty feet under the backyard, or what's building up in the basement air right now, because neither one was ever part of the inspection the buyer paid for.
That gap is the whole story in Lakewood. A home inspection catches what a person can see and touch. Two of the problems most likely to actually cost a Lakewood buyer money, radon gas and a failing sewer lateral, sit outside the scope of a standard inspection entirely. Buyers skip them to save a few hundred dollars on an already expensive closing, and in most of the country that's a reasonable bet. In Lakewood, where the geology and the housing stock both work against you, it's the wrong one.
What a Standard Inspection Actually Covers, and What It Doesn't
A general home inspector walks the visible and accessible systems: roof, structure, electrical panel, plumbing fixtures, HVAC, windows, appliances. What that inspection does not include, unless you ask and pay separately, is a radon test or a sewer scope. Both require equipment the general inspector typically doesn't carry, and both run on a different timeline than a walkthrough.
That distinction changes who decides whether these tests happen at all. A structural crack or a dying water heater gets flagged automatically because it sits in the inspector's normal path. Radon and sewer condition only get checked if the buyer specifically orders them, which means skipping either one is entirely a buyer's call, made under deadline pressure, usually without knowing how common both problems are in the specific block they're buying into.
Why Lakewood's Geology and Vintage Work Against You
Colorado sits on uranium-bearing rock that produces elevated radon gas across the Front Range, and Jefferson County's own health department estimates that close to half of the homes tested countywide come back above the EPA's action level of 4 picocuries per liter. That's a county-wide figure, not a Lakewood-only one, but it puts every buyer here in coin-flip territory before a single test runs.
Sewer condition is where the specific neighborhood actually changes the odds. Lakewood grew fast in the postwar decades, and the subdivisions built during that wave, Applewood, Green Mountain, and older stretches of Belmar among them, still carry original clay, cast iron, or in some cases Orangeburg pipe from that era. Those materials can perform fine for decades, then fail all at once when tree roots or shifting clay soil finally find a weak joint. A local sewer camera specialist that works across these neighborhoods, from the older clay lines near Heritage Lakewood Belmar Park and the 40 West Arts District to the newer PVC systems around Solterra and Colorado Mills, puts it plainly: the age of the line tells you more about your risk than the age of the roof does.
Newer construction in places like Solterra carries a different risk profile, mostly because PVC pipe and modern radon-resistant building techniques reduce the odds on both fronts. That trade-off is worth weighing alongside our comparison of new construction and existing homes in Lakewood before you decide which risks you're comfortable taking on.
What Skipping Either Test Actually Risks
| Add-on cost | What a bad result costs later | |
|---|---|---|
| Radon test | Roughly $100 to $200 added to a general inspection | Mitigation systems typically run $1,200 to $2,500 to install |
| Sewer scope | Roughly $150 to $300 when bundled with a general inspection | A cracked or root-choked lateral can mean a repair bill running into the thousands, more for a full replacement |
Neither test is required by Colorado law. Both are treated as standard practice by most lenders and inspectors specifically because the cost of skipping is so lopsided. A $150 scope that finds nothing costs you $150. A $150 scope that finds a collapsed lateral just kept someone else's deferred maintenance from becoming your problem the week after closing.
The New Pipes Down the Street Don't Fix the Old Pipe Under Your Yard
Here's the detail that catches even careful buyers off guard. Green Mountain Water and Sanitation District is currently running a district-wide infrastructure replacement project, with specific service areas and a published 2026 schedule for upgrading water and sewer mains across its territory. A buyer who sees construction crews working a nearby street, or spots the district's project map, can reasonably assume their own sewer risk is being handled by someone else.
It isn't, at least not entirely. Public infrastructure work replaces the main lines running under the street. The lateral, the pipe connecting your house to that main, stays the homeowner's responsibility before, during, and after any district upgrade. A brand-new main a block away does nothing for a cracked clay lateral sitting under your own driveway.
A district replacing its mains and a homeowner replacing their lateral are two separate projects with two separate owners. Only a scope run on your specific line tells you which one you actually have.
That's the mechanism worth understanding before anyone waives a sewer scope on the theory that the city already has it covered.
The Calendar Is the Real Constraint
Colorado's standard purchase contract gives buyers a defined window, commonly seven to fourteen days from acceptance depending on how the contract is written, to complete every inspection and deliver a written objection. That window has to cover the general inspection, the radon test, the sewer scope, and any follow-up specialist a first look turns up.
Radon testing carries its own built-in delay. A valid test requires the home to sit under closed-house conditions for a full 48 hours while the monitor runs, which means adding a radon test on day nine of a ten-day window rarely produces a usable result before the deadline hits. A sewer scope needs a scheduled visit with equipment most general inspectors don't carry in-house, which turns same-day booking into the difference between having an answer in time and not having one at all.
The practical move is to order both add-ons the same day you schedule the general inspection, not after you've read the report and decided whether to worry. By the time a standard report raises a question about the plumbing or the crawl space, the calendar may already be against you.
What to Actually Do With a Bad Result
If either test turns up a real problem, Colorado's contract gives you the standard toolkit: ask for a repair completed by a licensed contractor before closing, ask for a credit at closing so you control who does the work and when, or in some cases walk away and recover your earnest money if you and the seller can't agree by the resolution deadline that follows your objection.
Credits tend to be the more common outcome for both radon and sewer findings, mainly because they're faster to negotiate than scheduling a contractor ahead of an already-tight closing date. Sellers who want to keep a deal together generally prefer a documented credit over an open-ended repair commitment.
A Short FAQ
Is radon testing legally required in Colorado? No. It isn't a legal requirement for a residential sale, but it's treated as standard practice by most lenders and inspectors given how common elevated readings are across the Front Range.
What if the seller doesn't want me to test, or won't agree to a credit? Testing is your decision and your expense as the buyer, and Colorado's contract gives you the right to object to what you find regardless of the seller's preference. If you can't reach a written agreement by the resolution deadline, the contract typically allows you to terminate and recover your earnest money.
Does a sewer scope matter for a newer build? Less so, but not zero. Newer construction around Solterra and similar developments generally uses PVC pipe that resists root intrusion far better than the clay and cast iron common in Lakewood's postwar neighborhoods, which is why scopes matter most for anything built before the 1990s.
Buying or selling an older Lakewood home comes with real, knowable risks, and the value of working with someone who lives in this market every day is knowing which two hundred-dollar tests are worth fighting for on a ten-day clock. If you're weighing a purchase in Applewood, Green Mountain, Belmar, or anywhere in between, or getting a Lakewood home ready to list and want to get ahead of what a buyer's inspector will find, DreamSpace can walk you through exactly what to test, when to test it, and how to use the results. Schedule a free consultation and let's talk through your specific address before the clock starts running.