General Contractor in Chatsworth, CA

Dn Builders Group Inc Services is a licensed general building contractor based in Burbank, working throughout Chatsworth — kitchen and bathroom remodels, whole-home renovations, additions, ADUs and commercial build-outs. Chatsworth is where the Valley still keeps horses on its residential streets, where the city’s own plan puts horsekeeping first, and where the houses back up against the Santa Susana Mountains.

What we build in Chatsworth

Building on a horse-keeping lot

Chatsworth is in the City of Los Angeles, and its land use is set by the Chatsworth-Porter Ranch Community Plan, adopted September 4, 1993. That plan does something unusual: it states that preserving designated horsekeeping areas takes a higher priority than other uses allowed in the RA zone, and it names the priority area as the land north of Chatsworth Street and west of De Soto Avenue. It also supports “K” horsekeeping districts where they fit. The city’s historic resources survey notes that bridle paths still run beside many Chatsworth streets.

For a remodel, that shapes the site plan before it shapes the floor plan. An ADU, a garage conversion or a rear addition has to leave room for the stable, the corral and the required distance between them and any habitable room. A new driveway gate, block wall or curb cut should not cut off the bridle path along the street. We confirm the lot’s zone and any K district on ZIMAS first, then design around the horses, not over them. See what a horse barn costs on an equestrian lot, what an ADU costs in Los Angeles in 2026 and how much square footage you can add.

Fire country at the Santa Susana Mountains

The west and north edges of Chatsworth meet the Santa Susana Mountains and the Simi Hills, a wildlife corridor the community plan singles out for protection. It is also brush country. The 2005 Topanga Fire started in the Santa Susana Mountains northwest of Chatsworth on September 28, burned about 24,175 acres, forced evacuation orders for at least 1,500 residents, and took some 3,000 firefighters to contain.

Many hillside lots here are in a mapped Very High Fire Hazard Severity Zone. On those lots, new exterior work falls under California Building Code Chapter 7A: ember-resistant vents, a Class A roof, tempered glass in new windows and ignition-resistant siding and decks. LAFD brush clearance, which can reach up to 200 feet from a structure, also affects where an addition can go and how the site is landscaped. See what Chapter 7A fire hardening costs and the hidden costs of hillside lots.

The Devonshire/Topanga Corridor

Chatsworth’s commercial frontage along Devonshire Street and Topanga Canyon Boulevard sits inside the Devonshire/Topanga Corridor Specific Plan, Ordinance 168,937, effective September 7, 1993. On commercially zoned lots in the plan area, a Design Review Board must sign off before a building permit is issued for new construction, for additions that add height, floor area or units, and for an “extensive remodel” worth more than 75% of replacement value. Buildings top out at 45 feet, and a landscaped setback of at least 5 feet is required along both streets. Single-family houses are exempt.

For a restaurant or retail tenant, that review is a real step in the schedule, and sign rules are strict: pole signs are capped and banner and temporary signs are not allowed. See how long a restaurant build-out takes in Los Angeles.

Licensed and bonded

Dn Builders Group Inc Services holds an active California General Building license (#1139710), carries a $25,000 surety bond, and is fully insured. Any California project over $500 in labor and materials legally requires a licensed contractor. Verify ours, or anyone’s, with the CSLB — here is how to check a contractor’s license in about two minutes.

How we work

We check the zone, any K district, the fire map and the corridor plan boundary, then walk the space, talk honestly about budget, and give a fixed, itemized scope before anything is demolished. Permits are pulled by us through LADBS at the Valley office, 6262 Van Nuys Blvd. Change orders are approved in writing. You get a weekly update and a detailed walkthrough when we finish. Much of Chatsworth’s housing is 1950s–60s ranch homes on large lots, so we plan for what is usually behind the walls of a 1950s Valley home and check the foundation for earthquake retrofit needs. You can see finished work on our portfolio page.

Questions

Are you a licensed contractor in Chatsworth?

Yes. Dn Builders Group Inc Services holds an active California General Building contractor license (#1139710), carries a $25,000 surety bond, and is fully insured. The license covers Chatsworth and all of California, and can be verified with the Contractors State License Board.

Can I build an ADU on a horse-keeping lot in Chatsworth?

Often, yes, but plan the site around the horses first. The Chatsworth-Porter Ranch Community Plan gives designated horsekeeping areas, mainly north of Chatsworth Street and west of De Soto Avenue, a higher priority than other uses in the RA zone. We place the ADU so it keeps the required distance from stables and corrals and leaves street-side bridle paths and gates usable.

Does the Devonshire/Topanga Corridor Specific Plan affect my project?

Only if the property is commercially zoned inside the plan area along Devonshire Street and Topanga Canyon Boulevard. There, a Design Review Board reviews new construction, additions that add height or floor area, and remodels worth more than 75% of replacement value before a building permit is issued. Single-family houses are exempt.

Is my Chatsworth home in a fire zone?

Many homes on the hillside edges near the Santa Susana Mountains and the Simi Hills are in a mapped Very High Fire Hazard Severity Zone. We check the lot on ZIMAS before design, because a zone lot needs Chapter 7A materials for new exterior work, such as ember-resistant vents, noncombustible roofing and tempered glass.

Where else we work

Granada Hills, Northridge, Woodland Hills, and Greater Los Angeles.