3991 E 121st Ave , Thornton, CO 80241

How do I schedule a tour of 3991 E 121st Ave?

We can make that happen quickly. Click Tour This Home and we'll connect you directly with our vetted local partner to schedule your visit to 3991 E 121st Ave.

They know residential incomes in the area well and can give you the guidance you need to buy with confidence.

How do I get more information about 3991 E 121st Ave?

Click Ask a Question to talk with our team. You already know it is a 2 bed, N/A bath, listed for $1,400,000. We can talk through recent upgrades, potential seller motivation, how this quadruplex compares to others in Thornton, and can even get you in to see the property quickly.

How much is the monthly mortgage payment for 3991 E 121st Ave?

With a 20% down payment and a 30-year fixed loan at an illustrative 7.25% rate, the ez Mortgage Calculator estimates the monthly payment for 3991 E 121st Ave at around $8,170. This includes estimated property taxes and insurance.

Want to see how this changes with different down payments or interest rates? Jump to the calculator to run the numbers and fine-tune your plan.

How do I get pre-approved to buy 3991 E 121st Ave?

Stand out in a competitive market by getting pre-approved today. Our quick and private pre-approval process helps you understand your true buying power—no credit pull required to explore all of your options.

Or, let us connect you with our preferred local lender in Adams County. They will give you all of your available financing options, based on your specific situation and what is available to you.

Can I negotiate the asking price for 3991 E 121st Ave?

In most cases, yes. Whether 3991 E 121st Ave is priced competitively or not, your best offer depends on your personal situation, the seller's timeline, and recent activity in Thornton's market. Our preferred local partner will help you craft a strategy—factoring in comparable properties that have sold, timing, and deal structure—to make a smart, strong offer. Click here to ask about negotiation opportunities.

How do I make an offer on 3991 E 121st Ave?

We can handle that for you. Our preferred local agent specializes in residential incomes in Thornton and can guide you through every step of the offer process.

You need an expert who is looking out for your best interests. From market valuation to contingencies and timing, they'll help you present a compelling offer that fits your goals. Click Ask a Question to get started today.

What is the price per square foot for this home?

This home is listed at $1,400,000 with 1,244 sqft of space—that comes out to approximately $1,125 per square foot.

How long has this property been on the market?

3991 E 121st Ave was listed on February 11, 2026, which means it's been on the market for 270 days.

Want to keep tabs on it? Click the ♥ to favorite this home and get notified of price drops or changes.

When was this house built?

This home was built in 1997, making it approximately 29 years old.

What schools are assigned to this property?

Based on MLS info, this home is zoned for:

• Elementary: Stellar
• Middle: Century
• High: Mountain Range

Want to see how these schools compare? Check out our Adams County School Guide to see ratings, reviews, and more for the schools in the area.

What are the property taxes for 3991 E 121st Ave?

The most recent public record shows annual property taxes for 3991 E 121st Ave were approximately $2,438. This may change with reassessment or exemptions. Our local partner can verify current tax amounts and help you estimate future costs based on your situation.

Is there an HOA fee for this property, and what does it cover?

This home has an HOA fee of $245 paid monthly.

Is 3991 E 121st Ave still available for sale?

Yes, this home is still available! Click the ♥ to favorite it so you don't miss any changes—or ask our local expert to schedule a time to see it in person.