When Buyers Schedule the Sewer Scope in South Metro Denver

When should South Metro Denver buyers schedule the sewer scope, radon test, and insurance quote?

Buyers schedule the sewer scope, radon test, and insurance quote in the first days of the inspection period, right after the contract is signed. The goal is to have every result in hand before your inspection objection and termination deadlines, not just before closing. A short-term radon test alone runs 48 to 120 hours, so waiting until the second week can leave you with results and no time to act on them.

Key Takeaways

• Colorado's radon action level is 4 pCi/L, and the state health department encourages buyers to test during the inspection process, not after closing.
• A short-term radon test takes 48 to 120 hours, so it has to start early enough that the result arrives before your inspection deadlines.
• Recent local market data shows 5.3 months of supply for all home types sold in Denver within city limits, July to September 2026, up from 4.3 a year earlier, so buyers have more room to negotiate when a result comes back bad.
• A sewer scope is an inspection decision you make, not a universal legal requirement, so who orders it, who pays, and what happens with the result all depend on your contract.
• Request the homeowners insurance quote immediately after acceptance, because a declination or excluded peril can affect your financing and your path to closing.

This is one of the few parts of buying a home where the calendar matters more than the checklist. Here's how I'd sequence it, and why each piece has its own clock.

How Soon After Acceptance Should Buyers Schedule the Sewer Scope?

Book it in the first few days of your inspection period, ideally alongside or right after the general inspection. That leaves time to get a repair estimate or a second opinion before your contractual deadlines hit.

A sewer scope is a camera run through the line that connects the house to the municipal main. It shows you what a walkthrough never will: cracks, offsets, root intrusion, or sagging sections underground. It matters most when the home has a private lateral, older plumbing, mature trees near the line, or signs of past drainage work.

In Colorado, I tell buyers to get a sewer scope, a radon test, and an insurance quote during due diligence and not wait until closing. By then, your leverage is gone.

Is a sewer scope required in Colorado?

No. A sewer scope is an inspection you choose to order, not a universal statutory test. The state's approved Colorado Division of Real Estate contract language recognizes your right to obtain environmental inspections. Whether you order a scope, who pays, and how the result is handled come down to your completed contract and negotiations.

Don't assume that ordering a test pauses your deadline or gives you an automatic right to demand repairs. Your remedies depend on the deadlines and notices in your own contract.

What does a sensible order of operations look like?

Here's the sequence I'd walk you through the day your contract is executed:

Most of the time, buyers schedule the sewer scope as its own appointment with a separate specialist, so get it on the calendar as soon as you've booked the general inspection.

Why does the market backdrop matter here?

Recent local market data shows all home types sold in Denver within city limits from July to September 2026 at a median of $596,716, up 4.7% from $570,000 in the same window a year earlier. Over that same period, months of supply was 5.3 versus 4.3 a year earlier, and 48% of listings had a price cut. Buyers generally have more room to ask than they did a year ago.

That's an area-level picture. An individual home's value and leverage depend on its condition, street, build year, and timing, and I can't promise a seller will agree to anything. But a well-timed result gives you something concrete to negotiate with. A late result gives you nothing.

How Long Does a Radon Test Take, and What Happens if the Result Is High?

A short-term radon test takes 48 to 120 hours, according to the Colorado Department of Public Health and Environment (CDPHE). Start it near the beginning of your inspection period, then leave time for reporting and for any follow-up if the number comes back elevated.

CDPHE recommends mitigating when a result is above 4 picocuries per liter (pCi/L). The department also notes that approximately half of Colorado homes have radon levels above that action level. That's a statewide figure, not a South Metro Denver rate, so I'd never guess how a specific street or subdivision will test. You find out by testing the house you're buying.

Why do test conditions and the testing method matter?

CDPHE's testing guidance recommends a professional-grade short-term measurement during the inspection process. The conditions in the house and the professional's protocol can affect whether the result is useful in a transaction. Ask whoever runs the test how they handle that, and make sure everyone involved knows the house needs to be kept in the right condition during the test window.

Does an existing mitigation system mean you can skip the test?

No. CDPHE's radon FAQ advises testing even when a mitigation system is installed. A system on the wall tells you somebody addressed radon at some point. It doesn't tell you it's working now.

What do you do if the result is above 4 pCi/L?

Get a mitigation opinion right away and bring it to the negotiation while your deadline is still open. Colorado's radon disclosure law has applied to residential sales since August 7, 2023, but that law alone doesn't require you to order a test or require a seller to fix a reported level. Whether the seller addresses it, offers a credit, or does nothing is part of the negotiation. This is exactly where my experience with buyers in Parker, Centennial, and Highlands Ranch comes in: knowing how to frame the request so it gets a real response.

When Should You Get the Insurance Quote, and Who Pays for All of This?

Request the insurance quote as early as practical, ideally the day after acceptance and well before your inspection deadlines expire. Waiting until the week of closing is how buyers discover a problem with no time left to fix it.

There's no verified South Metro Denver insurance-binding timeline or current insurer underwriting rule I can point you to, so I'd never tell you a specific insurer's cutoff. The practical logic is simple. An insurance declination, an unacceptable deductible, an excluded peril, or a required repair can all affect whether you can proceed with financing and closing. Your lender will want coverage in place, so confirm their requirements directly.

What if an insurer won't cover the home?

Raise it immediately with your lender and with me, while your contract deadlines are still open. Depending on what the issue is, you might get a repair estimate, a second quote, or a negotiation with the seller. If you're still inside your inspection period, you have more options than if you wait. What you can actually do depends on your contract terms.

Who pays for the sewer scope, radon test, and follow-up testing?

Buyers commonly order and pay for their own inspections, but that's a contract and negotiation point, not a fixed rule. Who pays for follow-up testing or repairs is also negotiable, and I won't quote you a price range because current South Metro Denver costs for scopes, radon testing, mitigation, or repairs vary by provider and home. Confirm the details in your own contract.

If you're earlier in the process, my first-time buyer guide to South Metro Denver covers what to line up before you make an offer. Condo purchases bring their own due-diligence layer, which I cover in what condo buyers in South Metro Denver often miss.

Want to see how these timelines would fit your specific contract? Read what past clients say on Google and Zillow, then reach out.

FAQ

When should I schedule a sewer scope after my offer is accepted in Colorado?

Schedule it in the first few days of your inspection period, ideally with or right after the general inspection. That gives you time to get a repair estimate or second opinion before your contractual deadlines pass.

Can I do the sewer scope and radon test during the same inspection appointment?

Sometimes the same visit works for placing the radon device, but the radon test itself runs 48 to 120 hours, so the result comes later. The sewer scope is often done by a separate provider, so plan on coordinating both early rather than assuming one appointment covers everything.

Does a sewer-scope problem let a buyer cancel the contract?

It can give you grounds to object, negotiate, or terminate, but only if you act within the deadlines and notice requirements in your own contract. Ordering the scope doesn't automatically extend a deadline or create a right to demand repairs. Review your completed contract with me before the clock runs out.

What if the insurance company will not insure the home?

Tell your lender and me right away, while your deadlines are still open. Depending on the reason, you may be able to get a different quote, obtain a repair estimate, or negotiate with the seller. The earlier you find out, the more options you have.

Who pays for a sewer scope, radon test, or follow-up testing in South Metro Denver?

It's negotiable and set by your contract, not by a fixed rule. Buyers commonly order their own inspections, but follow-up testing or repair responsibility is a negotiation point. Confirm it in your own contract.

The timing is simple once you see it. Your inspection deadlines set the clock, and the insurance quote, radon test, and sewer scope all need results before they run out. When buyers schedule the sewer scope early, it's usually a short conversation instead of a rushed one. If you're under contract, or about to be, I'll help you build the schedule around your actual deadlines. Get a free home valuation or book a consultation with me and we'll map it out.

Equal Housing Opportunity. Zach Otten, Colorado real estate licensee (License: Real Estate), Real Broker, LLC, regulated by the Colorado Division of Real Estate. This article is general information, not legal, tax, or financial advice. Confirm your own numbers and deadlines with your closing agent, tax advisor, or lender.