
$2,690,000
$820 / sq ft
630 Quarrier Avenue
Mapleton Hill · Boulder, CO
- Bedrooms
- 4
- Bathrooms
- 3.5
- Square feet
- 3,280
- Year built
- 1906
Single-familyBuilt 1906
Mapleton Hill · Boulder, CO 80304
$3,250,000
$789 / sq ft

The home
On the planted-median stretch of Tarrant Avenue, inside the local historic district. The 2017 renovation was carried through Landmarks review and the approval documents transfer with the sale — worth a great deal to any future owner who wants to alter the envelope. A 1910 carriage house at the rear is a legal accessory dwelling unit.
Represented by Ines Kovač. All measurements are approximate and taken from the assessor record; a buyer should verify square footage, lot dimensions and permit history independently during the inspection period.
Features
Specification
| Property type | Single-family |
|---|---|
| Status | Active |
| Bedrooms | 5 |
| Bathrooms | 4 |
| Living area | 4,120 sq ft |
| Lot | 9,450 sq ft |
| Year built | 1898 |
| Price per sq ft | $789 |
| Property taxAt the current mill levy. Reassessed every two years in Colorado. | $16,250 / yr |
| HOA / metro district | None |
| Listed | July 4, 2026 |
| MLS numberDemo identifier. A live site carries the real MLS number. | 8413447 |
Neighborhood
Boulder's first residential subdivision and a designated local historic district. Tarrant Avenue is a divided street planted with silver maples; alterations visible from the street require Landmarks Board review.
Under the Fair Housing Act we describe the place and its built form only — never the people who live there, and never who a home would “suit”.
Everything in Mapleton Hillper month
An estimate only. Conventional 30-year assumptions, hazard insurance modelled at 0.35% of value a year, and mortgage insurance added below 20% down. Your actual payment depends on credit, debt ratios, reserves, occupancy and the loan product. A pre-qualification is a lender's opinion based on what you tell them; a pre-approval is based on documents they have verified. Sellers here take the second one seriously and largely ignore the first.
Request a showing
Same-day where the seller allows it. We will send the disclosure packet, the seller's property disclosure and any inspection reports already on file before you walk in.
Book a viewingComparable

$2,690,000
$820 / sq ft
Mapleton Hill · Boulder, CO
Single-familyBuilt 1906

$2,485,000
$729 / sq ft
Newlands · Boulder, CO
Single-familyBuilt 2018

$1,095,000
$883 / sq ft
Mapleton Hill · Boulder, CO
CondominiumBuilt 2016$585/mo HOA
Before you write
A comparative market analysis on this address, in writing, before you make an offer. It takes us two days and it costs nothing.

Colour
Twelve schemes. Picking one repaints every branded surface on the site — header rules, buttons, links, focus rings, gradients, icons, tags and the light-shaft field — and the choice follows you from page to page.
Each chip shows that scheme's real ramp — deep, base, mid, lift, then the secondary — computed with the same OKLCH derivation the page uses. Text weights are resolved against a measured contrast ratio on both the light and the dark ground, so no scheme here is offered and then corrected once you pick it.
Reading
High contrast drops the decorative washes and pushes body text to pure ink on pure ground, in whichever theme you are in.
Reduced stops the light-shaft field entirely, freezes the parallax window, ends the hero sequence on its current frame and turns every scroll-driven animation off.