Building a custom home in Allen in 2026 means one of a few specific things, because the city is nearly out of raw land. It's a remaining estate lot in a community like Twin Creeks or Montgomery Farm, a golf-course or greenbelt homesite, or a teardown-and-rebuild on an established lot in west Allen. Each of those starts from the same ground — expansive Blackland Prairie clay — and each answers to an architectural-review board that will scrutinize your elevation before the city ever sees a permit. A custom build is the one project where getting the sequence right, from the soil upward, decides everything that follows.
Where you can still build in Allen
The lots that remain each carry their own character. Twin Creeks is built around an 18-hole Arnold Palmer–designed golf course, with estate sections and gated enclaves where custom homes run well into the millions and back onto fairways and greenbelts. Montgomery Farm is a different animal: land the Montgomery family held for decades, developed as a deliberately conservation-minded community — preserved tree cover, trails woven through green space, larger lots, and a genuine sustainability ethos in Montgomery Farm Estates, Park at Montgomery Farm, and Montgomery Ridge. Beyond the marquee communities, much of Allen's new custom work is teardown-and-rebuild: buying a tired house on a mature lot and starting over. Each path shapes the design brief before a line is drawn.
It starts underground
On Houston Black clay — the reactive Blackland Prairie soil under most of Collin County — the house is only as stable as what's beneath the slab. A custom build is your one chance to get that right before anything sits on it: a geotechnical soils report specific to your lot, an engineered foundation designed from it (typically a post-tensioned slab or a pier-and-beam system), properly placed and moisture-conditioned pad fill, and a lot graded to code from the first day rather than patched after landscaping. Building the foundation correctly for your actual soil costs a fraction of retrofitting a fix once a finished house starts to move. This is the decision that quietly governs the next thirty years.
Allen's trees are part of the plan
On a wooded homesite — and the Montgomery Farm and Twin Creeks lots often are — the mature trees aren't just landscaping, they're part of the approval. Allen encourages preservation of significant trees, and removal tied to construction can require documentation or mitigation, so where the house sits, where the drive runs, and which canopy stays are design decisions made early, not bulldozer decisions made late. On the best lots, the trees are half the reason you bought there.
Two design reviews, not one
A custom home in Allen clears two gates. First the HOA or architectural-review committee — and in Twin Creeks and Montgomery Farm these are exacting, weighing materials, massing, rooflines, and, in Montgomery Farm's case, the community's green standards. Only then does the city's new-construction submittal go through the CSS portal: site plan, engineered foundation plan, energy-code compliance, and the trade permits. It's worth remembering that Texas licenses the trades — the electrician, plumber, and HVAC contractor carry state licenses — but not a statewide residential general contractor, so on a ground-up build the real question is who orchestrates every one of those licensed trades and stands behind the finished house.
One team from lot to lock
A custom build is the purest version of the whole-picture case: soil report to final styling, dozens of trades and thousands of decisions, all of which have to serve one coherent house. A specialty contractor delivers their slice and leaves; a general contractor owns the arc from raw lot to the day you turn the key, under one warranty. That single line of accountability is exactly what design-build is built to provide. The Remo Guys builds custom homes across Allen and Collin County, insured and bonded, since 2019 — one team answering for the whole picture, ground to roof.
What’s included
- —Lot evaluation, soils report & site prep
- —Architecture & engineering
- —Engineered foundation for expansive clay
- —Full MEP design & rough-in
- —Permitting & inspections
- —Construction management to final walkthrough